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Peripheral artery disease (PAD) is a common condition with high socio-economic relevance. Therefore, qualified nationwide provision of interventional treatments of PAD is important for maintaining a high quality medical service in Germany.All data on revascularization procedures from the quality management system of the German interventional radiological society (DeGIR) for the years 2018 and 2019 were retrospectively analysed. Number and distribution of DeGIR certified endovascular specialists and treatment centres was mapped. Documented procedures were broken down to the level of administrative districts. Absolute number of revascularization procedures and normalized number per one million inhabitants were computed.In 2019 there were 57 732 revascularization procedures from 228 participating centres performed by DeGIR certified interventional radiologists. A median of 62 recanalization procedures were documented per centre. 36 centres were considered to be high volume centres, with more than 500 procedures each. On a regional level in the years 2018 and 2019 combined a median (range) of 2324 (323-12 518) revascularization procedures per administrative district were performed by DeGIR certified interventional radiologist.There is a comprehensive nationwide high quality interventional-radiology service for the provision of revascularization procedures available in Germany.· In Germany there is a nationwide comprehensive infratsructure for the interventional-radiological treatment of PAD. · The volume of interventional-radiological treatments for PAD is growing. · There is a sufficient number of training and treatment centres for the delivery of interventional radiology procedures.· Mahnken AH, Nadjiri J, Schachtner B et al. Availability of interventional-radiological revascularization procedures in Germany - an analysis of the DeGIR Registry Data 2018/19. Fortschr Röntgenstr 2022; 194: 160 - 168.Die periphere arterielle Verschlusskrankheit ist eine häufige, sozioökonomisch bedeutsame Erkrankung. Die qualifizierte flächendeckende Versorgung mit interventionellen Therapieangeboten für Patienten mit pAVK ist daher von besonderer Bedeutung für die medizinische Versorgungsqualität in Deutschland.Die Daten der Jahre 2018 und 2019 des Qualitätssicherungsregisters für interventionelle Therapien der Deutschen Gesellschaft für Interventionelle Radiologie (DeGIR) für das Modul A (gefäßeröffnende und gefäßrekonstruierende Verfahren) wurden analysiert. Zahl und Verteilung zertifizierter interventioneller Radiologen der DeGIR für Gefäßmedizin und entsprechende Behandlungszentren wurden erfasst. Es erfolgte eine Aufschlüsselung der dokumentierten Interventionen nach Regionen bis auf Ebene der Regierungsbezirke. Es wurden absolute Zahlen sowie auf 1 Million Einwohner normierte Zahlen bestimmt.Im Jahr 2019 wurden an 228 teilnehmenden Einrichtungen 57 732 interventionell-radiologisch erbrachte Eingriffe im Modul A dokumentiert. Im Jahr 2019 wurden im Median 162,0 Eingriffe je Zentrum dokumentiert. Davon waren 36 Einrichtungen „High Volume“-Zentren mit mehr als 500 dokumentierten Eingriffen pro Jahr. Auf Ebene der Regierungsbezirke wurden 2018 und 2019 zusammengenommen im Median (Bandbreite) 2324 (323–12 518) interventionell-radiologische Gefäßrevaskularisationen je Regierungsbezirk dokumentiert.Die qualitätsgesicherte Versorgung mit interventionell-radiologischen Prozeduren zur Gefäßrevaskularisation durch zertifizierte interventionelle Radiologen ist in Deutschland flächendeckend verfügbar.· In Deutschland existiert eine flächendeckende Versorgung für interventionell-radiologisch geführte Gefäßrekanalisationen.. · Das Untersuchungsvolumen von interventionell-radiologisch geführten Gefäßrekanalisationen nimmt weiter zu.. · In der Fläche besteht eine gute Versorgung mit interventionell-radiologischen Versorgungs- und Ausbildungszentren..· Mahnken AH, Nadjiri J, Schachtner B et al. Availability of interventional-radiological revascularization procedures in Germany – an analysis of the DeGIR Registry Data 2018/19. Fortschr Röntgenstr 2022; 194: 160 – 168.

Stent-assisted coiling (SAC) represents an established treatment option for broad-based intracranial aneurysms. Here we report our initial and follow-up experience with the Neuroform Atlas Stent, a hybrid open- and closed-cell low-profile stent in the treatment of broad-based aneurysms. All intracranial aneurysms treated by SAC with the intention to apply the Neuroform Atlas Stent between July 2015 and December 2019 were included. Angiographic and clinical results were analyzed including all follow-up examinations. A total of 119 aneurysms (8 acutely ruptured) in 112 patients were included. In 19 cases (16.0%) re-catheterization of the aneurysm was performed in a second procedure after failure to re-cross the stent initially. Of all aneurysms, 83.2% (99/119) were completely occluded following the procedure. In 75.6% of all cases (90/119), a single microcatheter was used for both, implantation of the stent and coil occlusion of the aneurysm. At 3–6 and 12 months follow-up, the complete occlusion rates were 75.2 (79/105) and 81.3% (74/91). The thromboembolic (stent thrombosis) and hemorrhagic complication rate was 1.7 (2/119) and 0.8% (1/119), respectively, resulting in a procedure-related morbidity and mortality rate of 0.9 and 0.9% (1/112 patients). SAC using the Neuroform Atlas Stent offers a safe and effective option to treat broad-based intracranial aneurysms with a high angiographic and clinical success rate. In the majority of procedures, the application of two mircocatheters is not required. Prospective comparative studies might help to identify the value of SAC using the Neuroform Atlas Stent among the growing treatment options for broad-based aneurysms.

With the introduction of new devices and the development of approved devices, endovascular techniques are more and more considered as a treatment option for middle cerebral artery aneurysms (MCA). In this study, we present data on ruptured MCA aneurysms that were treated endovascularly in our hospital. In a retrospective case series of ruptured MCA bifurcation aneurysms, 118 (94%) cases were managed endovascularly between May 2008 and July 2017. Most were managed with coiling (= 62) and the remaining were managed with stent-assisted-coiling (= 35) and endovascular flow disruptor (WEB-device) (= 21). We measured the clinical outcome at the time of discharge and long-term follow-up on the modified Rankin Scale (mRS) and evaluated the rates of periprocedural complications and retreatment. A good clinical outcome (mRS 0–2) at discharge was achieved in 58.5% of these cases. Mortality rate was 19.5%. Nine aneurysms required retreatment. Eighty-three percent demonstrated a good clinical outcome at long-term follow-up (mRS 0–2). In total, 6 (5.1%) procedure-related complications and 10 (8.5%) disease-related complications occurred. No significant difference between reintervention, complications or outcome was found between the employment of different devices (P > 0.05). Endovascular treatment of ruptured MCA aneurysms at our practice showed similar morbidity and mortality to data published about surgical clipping. The endovascular device evolution permits a feasible and safe treatment of ruptured MCA bifurcation aneurysms. Endovascular treatment can therefore be considered as an alternative treatment option to microsurgery for this type of aneurysm.

Purpose: Little is known about catheter-based endovascular treatment of vertebrobasilar artery branch occlusion (VEBABO) in acute ischemic stroke (AIS). Nonetheless, the experience of mechanical thrombectomy (MT) in distal small sized arteries of the anterior circulation seems promising in AIS. In this multicenter study, we report the feasibility, efficacy and safety of MT in VEBABO. Methods: Retrospective analysis of consecutive AIS patients treated with MT due to VEBABO including posterior and anterior inferior cerebellar artery (PICA, AICA) and superior cerebellar artery (SCA) occlusions at seven tertiary care centers between January 2013 and May 2020. Baseline demographics and angiographic outcomes including recanalization success of the affected cerebellar arteries and procedural complications were recorded. Clinical outcomes were evaluated by the modified Rankin scale (mRS) at discharge and 90 days. Results: Out of 668 endovascularly treated posterior circulation strokes we identified 16 (0.02%) cases with MT for VEBABO. Most frequently, MT of the SCA was done (13/16, 81%). Most VEBABOs occurred after MT of initial basilar/posterior cerebral artery occlusion (9/16, 56%). In 10/16 (63%) procedures, the affected VEBABO was successfully recanalized. Out of four patients three (75%) with isolated VEBABO had benefited from endovascular therapy. Subarachnoid hemorrhage was observed in 3/16 (19%) procedures. The rate of favorable outcome (mRS ≤2) was 40% at discharge and 47% at 90-day follow-up. Mortality was 13% (2/15). Conclusion: The use of MT for VEBABO is rare but appears to be feasible and effective; however, the comparatively high rate of procedure-related hemorrhage highlights that the indications for MT in these occlusion sites should be carefully weighed up.

BackgroundThe use of flow diversion to treat intracranial aneurysms has increased in recent years.ObjectiveTo assess the safety and angiographic efficacy of the p64 flow modulation device.MethodsDiversion-p64 is an international, prospective, multicenter, single-arm, study conducted at 26 centers. The p64 flow modulation device was used to treat anterior circulation aneurysms between December 2015 and January 2019. The primary safety endpoint was the incidence of major stroke or neurologic death at 3–6 months, with the primary efficacy endpoint being complete aneurysm occlusion (Raymond-Roy Occlusion Classification 1) on follow-up angiography.ResultsA total of 420 patients met the eligibility criteria and underwent treatment with the p64 flow modulation device (mean age 55±12.0 years, 86.2% female). Mean aneurysm dome width was 6.99±5.28 mm and neck width 4.47±2.28 mm. Mean number of devices implanted per patient was 1.06±0.47, with adjunctive coiling performed in 14.0% of the cases. At the second angiographic follow-up (mean 375±73 days), available for 343 patients (81.7%), complete aneurysm occlusion was seen in 287 (83.7%) patients. Safety data were available for 413 patients (98.3%) at the first follow-up (mean 145±43 days) with a composite morbidity/mortality rate of 2.42% (n=10).ConclusionsDiversion-p64 is the largest prospective study using the p64 flow modulation device. The results of this study demonstrate that the device has a high efficacy and carries a low rate of mortality and permanent morbidity.

Background Data on outcome after endovascular treatment of basilar artery fenestration aneurysms (BAFAs) is limited. This study presents our multi-centre experience of BAFAs treated by different reconstructive techniques including coils, stent-assisted coiling (SAC), flow diversion and intra-saccular flow disruption with the Woven Endobridge (WEB). Methods Retrospective analysis of 38 BAFAs treated endovascularly between 2003 and 2020. The primary endpoint was complete aneurysm obliteration defined as Raymond–Roy occlusion classification (RROC) I on immediate and follow-up (FU) angiography. The secondary endpoints were procedure-related complications, rate of re-treatment, and clinical outcome. Results Endovascular treatment was feasible in 36/38 aneurysms (95%). The most frequent strategy was coiling (21/36, 58%), followed by SAC (7/36, 19%), WEB embolization (6/36, 17%) and flow diversion (2/36, 6%). A successful aneurysm occlusion (defined as RROC 1 and 2) on the final angiogram was achieved in 30/36 (83%) aneurysms including all patients presenting with baseline subarachnoid haemorrhage and 25/36 (69%) were occluded completely. Complete occlusion (RROC 1) was more frequently achieved in ruptured BAFAs (15/25, 60% v. 2/11, 18%; p = 0.031). Procedure-related complications occurred in 3/36 (8%) aneurysms. Re-treatment was executed in 12/36 (33%) aneurysms. After a median angiography FU of 38 months, 30/31 (97%) BAFAs were occluded successfully and 25/31 (81%) showed complete occlusion. Conclusion Reconstructive endovascular treatment of BAFAs is technically feasible with a good safety profile. Although in some cases re-treatment was necessary, a high rate of final aneurysm occlusion was achieved.

Um das gesamte neurovaskulare Erkrankungsspektrum auf einem hohen Qualitatsniveau abzubilden, das uber die reine akute Schlaganfallversorgung hinausgeht, hat die Deutsche Schlaganfall-Gesellschaft (DSG) gemeinsam mit den Fachgesellschaften fur Neurochirurgie und Neuroradiologie ein Zertifizierungsverfahren fur sog. neurovaskulare Netzwerke (NVN) entwickelt. Strukturell setzt sich ein NVN aus einem koordinierenden Zentrum mit mindestens 3 neurovaskularen Netzwerkpartnern mit einer zertifizierten Stroke-Unit zusammen. Nach diesem neuen Standard wurden von 2018 bis 2020 bisher 15 NVN auditiert und zertifiziert. Wie leistungsfahig sind die NVN? Werden hohe Standards eingehalten? Ausgewertet wurden die Auditberichte. Die Datenlage geht auf die Jahre 2017 bis 2019 zuruck. Die 15 NVN behandelten insgesamt 86.510 Schlaganfallpatienten im Erhebungsjahr und waren mit insgesamt 107 Partnerkliniken vernetzt, die durchschnittlich 25 km entfernt vom koordinierenden Zentrum lagen und insgesamt 2726 Patienten verlegten. In den koordinierenden Zentren wurden 2383 Patienten mit nichttraumatischen intrazerebralen Blutungen behandelt und 2463 Thrombektomien durchgefuhrt. Bei 712 Patienten mit akuten aneurysmatischen Subarachnoidalblutungen wurde eine endovaskulare Therapie und bei 401 ein Clipping vorgenommen. Die Auditierung verlief in der Mehrzahl der NVN erfolgreich. Der Zertifizierungsprozess der NVN ist erfolgreich gestartet und die Audits erwiesen sich als gutes Instrument der Qualitatskontrolle und -verbesserung. Die 15 NVN sind leistungsfahig und behandeln mehr als ein Viertel der Schlaganfallpatienten in deutschen Stroke-Units.

Background: The prevalence of low back pain in adolescents is close to that found in the adult population. In view of the relationship between low back pain and the resistance of the spine stabilizing muscles, studies have sought to identify the ability of specific motor tests to predict this condition. Objectives: Our objective was to verify the predictive ability of three motor tests related to musculoskeletal fitness to identify adolescents with low back pain. Methods: The sample consisted of 150 adolescents, of both sexes, aged between 15 and 19 years. The Nordic questionnaire validated for Brazilian adolescents was applied to identify those with low back pain. Subsequently, three motor tests (one-minute sit-up test, Sorensen test and lateral plank test) were applied. Statistical analysis involved the ROC curve, to identify the Area Under the Curve (AUC), assuming a 95% confidence interval. Results: It was observed in males that all the tests had a low AUC (between 0.56 and 0.57), without statistical significance (p > 0.05). For females, AUC ranged from 0.62 to 0.66, with statistical significance (p < 0.05) for the cut-off points identified in the one-minute sit-up test (≤ 24 repetitions) and Sorensen test (≤ 28 seconds), however, without significance (p > 0.05) for the lateral plank test. Conclusion: Motor tests of abdominal and paravertebral muscle resistance were not predictors of low back pain in male adolescents. Despite the low accuracy, the cut-off points identified in the one-minute sit-up test and Sorensen test, can be used with some caution to predict low back pain in female adolescents.

Acute bleeding is a life-threatening condition that can be effectively treated minimally invasively by interventional radiologists using transcatheter vessel occlusion (TCVO). The purpose of this study was to evaluate the availability of TCVO performed by interventional radiologists in Germany based on the DeGIR registry. TCVO interventions from the years 2016 and 2017 were included (DeGIR module B). The number of interventions was assessed by state and region. TCVO interventions were reported by 242 clinics in Germany. 16 763 module B interventions were reported in 2016 and 16 399 in 2017. DeGIR requirements for certification as a training center were fulfilled by 160 facilities in 2016 and by 162 facilities in 2017. Normalized to one million citizens, an average of 211 TCVO interventions were performed in 2016 and 200 in 2017 (standard deviation was 101 and 109); the median was 202 and 222, respectively. In all regions TCVO interventions were reported. Only a minimal number of small regions showed a lower number of clinics offering TCVO interventions. The results from the DeGIR registry indicate comprehensive nationwide availability of TCVO performed by interventional radiologists with the necessary experience in Germany on the state level for the treatment of acute bleeding. Furthermore, the distribution of facilities fulfilling the requirements of training centers allows for good educational possibilities for young interventional radiologists in Germany. Only the distribution of clinics offering TCVO in a few small regions might lead to increased transfer times in the case of acute bleeding.· As a treatment for life-threatening acute bleeding in Germany, transcatheter vessel occlusion led by interventional radiologists is readily available on the state level.. · Furthermore, the distribution of facilities fulfilling the requirements of training centers allows for good educational possibilities for young interventional radiologists in Germany.. · Due to the good training conditions in Germany, it might be possible to further improve the situation in smaller regions by training more interventional radiologists and employing them in regions with less coverage..· Nadjiri J, Schachtner B, Bücker A et al. Availability of Transcatheter Vessel Occlusion Performed by Interventional Radiologists to Treat Bleeding in Germany in the Years 2016 and 2017 - An Analysis of the DeGIR Registry Data. Fortschr Röntgenstr 2020; 192: 952 - 960.ZIEL: Aktive Blutungen sind potenziell lebensbedrohliche Notfälle. Diese Blutungen können oftmals sehr effektiv mit interventionell-radiologisch durchgeführten, gefäßverschließenden Maßnahmen therapiert werden. Im Folgenden soll anhand des DeGIR-Registers die deutschlandweite Versorgung zur interventionell-radiologischen Therapie von aktiven Blutungen evaluiert und dargestellt werden, inwieweit eine Flächendeckung mit diesen Therapien erreicht wird. Erfasst wurden die Untersuchungszahlen zu gefäßverschließenden Interventionen (DeGIR-Modul B) aus den Jahren 2016 und 2017. Es erfolgte eine Aufschlüsselung der erfassten Leistungsdaten nach Bundesländern bzw. 40 kleineren Regionen (Regierungsbezirke und ehemalige Regierungsbezirke). 242 Kliniken in Deutschland erfassten Interventionen im Modul B. Im Jahr 2016 wurden 16 763 und im Jahr 2017 16 399 Modul-B-Eingriffe im Register erfasst. Die DeGIR-Voraussetzung zur Ausbildungszentren-Zertifizierung für das Modul B erfüllten im Jahr 2016 160 Einrichtungen und im Jahr 2017 162. Normiert auf 1 Million Einwohner fanden deutschlandweit 2016 im Durchschnitt 211 und 2017 200 Eingriffe statt (Standardabweichung 101 bzw. 109). Der Median lag bei 202 bzw. 222 Eingriffen pro 1 Million Einwohner. In allen Regionen wurden Eintragungen registriert. Einzelne kleinere Regionen verfügen allerdings über eine geringe Anzahl an Krankenhäusern, in denen die interventionell radiologische Therapie einer akuten Blutung angeboten werden kann. Aus den Registerdaten lässt sich auf Bundeslandebene auf eine gegebene deutschlandweite flächendeckende Versorgung mit interventionell-radiologisch geführten Therapien bei akuten Blutungen mit entsprechender Erfahrung schließen. Zudem zeigt die Verteilung der zertifizierungsfähigen bzw. zertifizierten Ausbildungszentren auch eine gute Ausbildungssituation für jüngere interventionelle Radiologen in Deutschland an. Die Verteilung der Krankenhäuser, welche eine interventionell-radiologische Therapie anbieten, lässt eine verlängerte Anfahrt in einigen wenigen Regionen vermuten.· In Deutschland liegt auf Bundeslandebene eine gute flächendeckende Versorgung mit interventionell-radiologisch geführten Therapien bei akuten Blutungen vor.. · Die Verteilung der zertifizierungsfähigen bzw. zertifizierten Ausbildungszentren zeigt eine gute Ausbildungssituation für jüngere interventionelle Radiologen in Deutschland an.. · Auf Basis der Ausbildungssituation in Deutschland könnte die Ausbildung von mehr interventionellen Radiologen und die Verteilung eben dieser auf möglicherweise strukturschwächere Regionen die Versorgungssituation auf kleinerer Regionalebene in der Zukunft wahrscheinlich noch deutlich verbessern..· Nadjiri J, Schachtner B, Bücker A et al. Availability of Transcatheter Vessel Occlusion Performed by Interventional Radiologists to Treat Bleeding in Germany in the Years 2016 and 2017 – An Analysis of the DeGIR Registry Data. Fortschr Röntgenstr 2020; 192: 952 – 960.

BACKGROUND The objective of the STREAM Trial was to evaluate the effect of simulation training on process times in acute stroke care. METHODS The multicenter prospective interventional STREAM Trial was conducted between 10/2017 and 04/2019 at seven tertiary care neurocenters in Germany with a pre- and post-interventional observation phase. We recorded patient characteristics, acute stroke care process times, stroke team composition and simulation experience for consecutive direct-to-center patients receiving intravenous thrombolysis (IVT) and/or endovascular therapy (EVT). The intervention consisted of a composite intervention centered around stroke-specific in situ simulation training. Primary outcome measure was the 'door-to-needle' time (DTN) for IVT. Secondary outcome measures included process times of EVT and measures taken to streamline the pre-existing treatment algorithm. RESULTS The effect of the STREAM intervention on the process times of all acute stroke operations was neutral. However, secondary analyses showed a DTN reduction of 5 min from 38 min pre-intervention (interquartile range [IQR] 25-43 min) to 33 min (IQR 23-39 min, p = 0.03) post-intervention achieved by simulation-experienced stroke teams. Concerning EVT, we found significantly shorter door-to-groin times in patients who were treated by teams with simulation experience as compared to simulation-naive teams in the post-interventional phase (-21 min, simulation-naive: 95 min, IQR 69-111 vs. simulation-experienced: 74 min, IQR 51-92, p = 0.04). CONCLUSION An intervention combining workflow refinement and simulation-based stroke team training has the potential to improve process times in acute stroke care.

Purpose Use of automated perfusion software has gained importance for imaging of stroke patients for mechanical thrombectomy (MT). We aim to compare four perfusion software packages: 1) with respect to their association with 3‑month functional outcome after successful reperfusion with MT in comparison to visual Cerebral Blood Volume - Alberta Stroke Program Early CT Score (CBV-ASPECTS) and collateral scoring and 2) with respect to their agreement in estimation of core and penumbra volume. Methods This retrospective, multicenter cohort study (2015–2019) analyzed data from 8 centers. We included patients who were functionally independent before and underwent successful MT of the middle cerebral artery. Primary outcome measurements were the relationship of core and penumbra volume calculated by each software, qualitative assessment of collaterals and CBV-APECTS with 3‑month functional outcome and disability (modified Rankin scale >2). Quantitative differences between perfusion software measurements were also assessed. Results A total of 215 patients (57% women, median age 77 years) from 8 centers fulfilled the inclusion criteria. Multivariable analyses showed a significant association of RAPID core (common odds ratio, cOR 1.02; p = 0.015), CBV-ASPECTS (cOR 0.78; p = 0.007) and collaterals (cOR 0.78; p = 0.001) with 3‑month functional outcome (shift analysis), while RAPID core (OR 1.02; p = 0.018), CBV-ASPECTS (OR 0.77; p = 0.024), collaterals (OR 0.78; p = 0.007) and OLEA core (OR 1.02; p = 0.029) were significantly associated with 3‑month functional disability. Mean differences on core estimates between VEOcore and RAPID were 13.4 ml, between syngo.via and RAPID 30.0 ml and between OLEA and RAPID −3.2 ml. Conclusion Collateral scoring, CBV-ASPECTS and RAPID were independently associated with functional outcome at 90 days. Core and Penumbra estimates using automated software packages varied significantly and should therefore be used with caution.

BackgroundFew prospective series have described the safety and effectiveness of the Neuroform Atlas Stent System. We aimed to investigate the efficacy and safety of the device in patients treated for unruptured aneurysm.MethodsATLAS EU PMCF is a consecutive, prospective, multicentric study that included patients with unruptured saccular aneurysm of all sizes. Follow-up visits were scheduled at 3–6 months and 12–16 months with digital subtraction angiography (DSA) or MRI imaging follow-up as per the site standard of care. The primary efficacy endpoint was adequate aneurysm occlusion (Raymond Roy occlusion grade I and II) on 12 month angiography. The primary safety endpoint was any major stroke or ipsilateral stroke or neurological death within 12 months.ResultsOf the 106 patients consented, 105 were treated with at least one Neuroform Atlas stent. There was a failed implantation attempt in 1 patient, 85 patients received lateral stenting, and 19 patients received Y-stenting. Mean aneurysm neck size was 4.2 mm (range 1.9–33 mm). Adequate occlusion was observed in 95.1% immediately after the procedure and in 98.9% of cases at 1 year DSA follow-up. Overall, 1.0% (1/102; 95% CI 0.0% to 5.3%) of patients experienced a primary safety endpoint of major stroke. Three minor strokes resulted in a modified Rankin Scale score of 2.ConclusionsIn this multicentric, prospective study, stent-assisted coiling of medium size unruptured aneurysms with the Neuroform Atlas stent resulted in a favorable rate of satisfactory occlusion. In our findings, the use of the Y-stenting technique was associated with increased rates of procedural complications.Clinical trial registrationhttps://clinicaltrials.gov/ct2/show/NCT02783339.

BackgroundChronic subdural hematoma (CSDH) is a common neurosurgical condition with high recurrence rates. Repeated microbleedings from fragile neo-vessels supplied by peripheral branches of the middle meningeal artery (MMA) are believed to be responsible for the growth and recurrence of CSDH. Thus, MMA embolization might be a promising method to prevent re-bleedings and recurrences. This study aims to assess the efficacy, complication rates, and mid-term outcome of MMA embolization with or without burr hole irrigation compared with burr hole irrigation alone.MethodsPatients diagnosed with CSDH who underwent MMA embolization and/or surgical treatment were retrospectively recruited to this single-center study. The outcome variables were defined as treatment-related complications, clinical outcome at discharge, rate of revision surgery, and CT findings during the follow-up period.ResultsA total of 132 patients with CSDH were included in the study. The use of antiplatelet/anticoagulant medication was significantly higher in the combined treatment and embolization group (pConclusionMMA embolization is a safe and efficacious minimal invasive adjuvant and/or alternative procedure for the treatment of CSDH with a reduced recurrence rate.

Magnetic Resonance Imaging (MRI) is a very innovative, but at the same time complex and technically demanding diagnostic method in radiology. It plays an increasing role in high-quality and efficient patient management. Quality assurance in MRI is of utmost importance to avoid patient risks due to errors before and during the examination and when reporting the results. Therefore, MRI requires higher physician qualification and expertise than any other diagnostic imaging technique in medicine. This holds true for indication, performance of the examination itself, and in particular for image evaluation and writing of the report. In Germany, the radiologist is the only specialist who is systematically educated in all aspects of MRI during medical specialty training and who must document a specified, high number of examinations during this training. However, also non-radiologist physicians are increasingly endeavoring to conduct and bill MRI examinations on their own. In this position statement, the following aspects of quality assurance for MRI examinations and billing by radiologists and non-radiologist physician specialists are examined scientifically: Requirements for specialist physician training, MRI risks and contraindications, radiation protection in the case of non-ionizing radiation, application of MR contrast agents, requirements regarding image quality, significance of image artifacts and incidental findings, image evaluation and reporting, interdisciplinary communication and multiple-eyes principle, and impact on healthcare system costs. The German Roentgen Society, German Society of Neuroradiology, and Society of German-speaking Pediatric Radiologists are critical with regard to MRI performance by non-radiologists in the interest of quality standards, patient welfare, and healthcare payers. The 24-month additional qualification in MRI as defined by the physician specialization regulations (Weiterbildungsordnung) through the German state medical associations (Landesärztekammern) is the only competence-based and quality-assured training program for board-certified specialist physicians outside radiology. This has to be required as the minimum standard for performance and reporting of MRI exams. Exclusively unstructured MRI training outside the physician specialization regulations has to be strictly rejected for reasons of patient safety. The performance and reporting of MRI examinations must be reserved for adequately trained and continuously educated specialist physicians.· MR imaging plays an increasing role due to its high diagnostic value and serves as the reference standard in many indications.. · MRI is a complex technique that implies patient risks in case of inappropriare application or lack of expertise.. · In Germany, the radiologist is the only specialist physician that has been systematically trained in all aspects of MRI such as indication, performance, and reporting of examinations in specified, high numbers.. · The only competence-based and quality-assured MRI training program for specialist physicians outside radiology is the 24-month additional qualification as defined by the regulations through the German state medical associations.. · In view of quality-assurance and patient safety, a finalized training program following the physician specialization regulations has to be required for the performance and reporting of MRI examinations..· Hunold P, Bucher AM, Sandstede J et al. Statement of the German Roentgen Society, German Society of Neuroradiology, and Society of German-speaking Pediatric Radiologists on Requirements for the Performance and Reporting of MR Imaging Examinations Outside of Radiology. Fortschr Röntgenstr 2021; 193: 1050 - 1060. Die Magnetresonanztomografie (MRT) ist ein sehr innovatives, aber zugleich komplexes und technisch aufwendiges Verfahren in der Radiologie. Ihr Stellenwert für hochqualitatives und effizientes Patientenmanagement nimmt stetig zu. Die Qualitätssicherung hat in der MRT eine besondere Bedeutung, da Fehler vor und während der Untersuchung oder bei der Befundung schnell zu einem Patientenrisiko führen können. Daher erfordert die MRT eine höhere ärztliche Qualifikation und Expertise als andere bildgebende Diagnoseverfahren. Dies bezieht sich auf die Indikationsstellung, die Durchführung und im Besonderen auf die Auswertung und Befunderstellung. Der Radiologe ist der einzige Facharzt, der schon in der Weiterbildung sämtliche Aspekte der MRT erlernen und in definierter, hoher Anzahl nachweisen muss. Aber auch nichtradiologische Fächer bemühen sich zunehmend, selbstständig MRT-Untersuchungen durchführen und v. a. abrechnen zu dürfen. In diesem Positionspapier werden auf wissenschaftlicher Basis die folgenden Aspekte zur Qualitätssicherung von MRT-Untersuchungen und Leistungserbringung durch Radiologen und nichtradiologische Fachärzte beleuchtet: Anforderungen an die ärztliche Weiterbildung, Risiken der MRT und Kontraindikationen, Strahlenschutz bei nichtionisierender Strahlung, Anwendung von MRT-Kontrastmitteln, Anforderungen an die Untersuchungsqualität, Bedeutung von Artefakten und Nebenbefunden, Befundung und Erstellung des Befundberichts, interdisziplinärer Austausch und Mehraugenprinzip sowie Auswirkungen auf die Kosten für das Gesundheitssystem. DRG, DGNR und GPR stehen der Durchführung von MRT-Untersuchungen durch Nichtradiologen im Interesse von Qualitätsstandards, Patientenwohl und Kostenträgern kritisch gegenüber. Die Weiterbildungsordnungen der Landesärztekammern bieten mit der 24-monatigen „Zusatz-Weiterbildung Magnetresonanztomographie“ die einzige kompetenzbasierte und qualitätsgesicherte Weiterbildungsmöglichkeit für Fachärzte außerhalb des Faches der Radiologie. Diese muss als Mindeststandard für die Durchführung und Befunderstellung von MRT-Untersuchungen gefordert werden. Der alleinige Nachweis von Fortbildungen in der MRT ist – ohne entsprechende Weiterbildung – aus Gründen der Patientensicherheit abzulehnen. Durchführung und Befunderstellung von MRT-Untersuchungen müssen adäquat weitergebildeten und kontinuierlich fortgebildeten Fachärztinnen und Fachärzten vorbehalten bleiben. · Die MRT hat als Diagnoseverfahren aufgrund ihrer Aussagekraft einen stetig wachsenden Stellenwert und gilt bei vielen Indikationen als der Referenzstandard.. · Die Methode MRT ist in vielerlei Hinsicht komplex und birgt bei unsachgemäßer Anwendung und fehlender Expertise Gefahren für Patienten.. · Nur in der Weiterbildung zum Facharzt für Radiologie werden sämtliche Aspekte der MRT hinsichtlich Indikationsstellung, Durchführung und Befunderstellung systematisch erlernt und in definierter und hoher Anzahl nachgewiesen.. · Die einzige kompetenzbasierte und qualitätsgesicherte Weiterbildungsmöglichkeit für nichtradiologische Fachärzte ist die 24-monatige „Zusatz-Weiterbildung Magnetresonanztomographie“ nach den Weiterbildungsordnungen der Landesärztekammern.. · Im Interesse der Qualitätssicherung und Patientensicherheit muss für die Durchführung und Befunderstellung von MRT-Untersuchungen eine abgeschlossene Weiterbildung nach Weiterbildungsordnung gefordert werden..· Hunold P, Bucher AM, Sandstede J et al. Statement of the German Roentgen Society, German Society of Neuroradiology, and Society of German-speaking Pediatric Radiologists on Requirements for the Performance and Reporting of MR Imaging Examinations Outside of Radiology. Fortschr Röntgenstr 2021; 193: 1050 – 1061.

Structured reporting is an essential step in establishing standardized quality standards in diagnostic radiology. The German Society of Radiology and the German Society of Neuroradiology aim to provide templates for the structured reporting of different radiological examinations. The Information Technology working group of the German Society of Radiology developed structured templates for the radiological reporting of different indications in consensus with specialist support by experts. We present a template for the structured reporting of examinations of patients with acute ischemic stroke by non-contrast computed tomography, CT angiography, and CT perfusion. This template is provided on the website www.befundung.drg.de for free use. Implementation of the structured template may increase quality and provide a minimum standard for radiological reports in patients with acute ischemic stroke.· The German Society of Radiology and the German Society of Neuroradiology are providing support for the development of structured templates in German.. · We present a template for the structured reporting of examinations of patients with acute ischemic stroke by non-contrast computed tomography, CT angiography, and CT perfusion. This template is provided on the website www.befundung.drg.de for free use.. · Implementation of the structured template may increase quality and provide a minimum standard for radiological reports in patients with acute ischemic stroke..· Brendle C, Bender B, Selo N et al. Structured Reporting of Acute Ischemic Stroke - Consensus-Based Reporting Templates for Non-Contrast Cranial Computed Tomography, CT Angiography, and CT Perfusion. Fortschr Röntgenstr 2021; 193: 1315 - 1317. Die strukturierte Befundung ist ein wichtiger Bestandteil zur Verbesserung des Qualitätsstandards in der radiologischen Diagnostik. Die Deutsche Röntgengesellschaft und die Deutsche Gesellschaft für Neuroradiologie sind bestrebt, der Fachöffentlichkeit standardisierte Befundvorlagen für spezifische Fragestellungen zur Verfügung zu stellen. Die AG Informationstechnologie der Deutschen Röntgengesellschaft hat in Zusammenarbeit mit fachspezifischen Experten im Konsensverfahren Befundvorlagen für verschiedene radiologische Fragestellungen erarbeitet. Die hier vorgestellte strukturierte Befundvorlage zur computertomografischen Akutdiagnostik des ischämischen Schlaganfalls mittels nativer Computertomografie (CT), CT-Angiografie und CT-Perfusion wird online unter www.befundung.drg.de in einer frei zugänglichen Datenbank zur Verfügung gestellt und kann über strukturierte-befundung@drg.de bzw. https://github.com/DRGagit/ak_befundung kommentiert werden. Der Einsatz der strukturierten Befundvorlage soll einen Beitrag zur Steigerung der Qualität radiologischer Befunde und die Einhaltung eines Mindeststandards bei der Akutdiagnostik des Schlaganfalls leisten.· Die Deutsche Röntgengesellschaft (DRG) und die Deutsche Gesellschaft für Neuroradiologie (DGNR) fördern die deutschsprachige Entwicklung strukturierter Befundvorlagen.. · Die strukturierte Befundvorlage zur computertomografischen Akutdiagnostik des ischämischen Schlaganfalls mittels nativer Computertomografie (CT), CT-Angiografie und CT-Perfusion wird online unter www.befundung.drg.de frei zugänglich zur Verfügung gestellt.. · Der Einsatz der strukturierten Befundvorlage soll einen Beitrag zur Steigerung der Qualität radiologischer Befunde und die Einhaltung eines Mindeststandards bei der Akutdiagnostik des Schlaganfalls leisten..· Brendle C, Bender B, Selo N et al. Structured Reporting of Acute Ischemic Stroke – Consensus-Based Reporting Templates for Non-Contrast Cranial Computed Tomography, CT Angiography, and CT Perfusion. Fortschr Röntgenstr 2021; 193: 1315 – 1317.

The number of acute and early stent occlusions after emergency stenting of the internal carotid artery (ICA) in patients with tandem lesions is unclear and only mentioned in a small number of publications, ranging from 0-20%. A recent article by Yilmaz et al. reported a high rate of acute in-stent occlusions of 45% within 72 h after deployment of CASPER dual layer stents.All patients with acute ischemic stroke treated with a CASPER stent between August 2014 and April 2018 were retrospectively evaluated for occlusion rates, periinterventional medication and early complications. A total of 66 patients, 45 with tandem pathologies and 21 with proximal ICA stenosis only were enrolled.Thrombotic complications occurred in 16 out of 66 patients (24%) and hemorrhagic complications in 8/66 (12%) and 15 of the 16 thrombotic complications and 7/8 symptomatic intracranial hemorrhages (sICH) occurred in patients with tandem lesions and accessory intracranial thrombectomy. Of the patients with sICH five were treated in a prolonged or unknown time window. In patients with intraprocedural thrombotic complications ultrasound imaging showed patent stents in 13 of the 14 patients CONCLUSIONS: The CASPER stent system showed a high technical success rate in patients with acute stroke. The number of patients with sICH was not higher than the numbers reported in the published literature despite the early use of Gp IIb/IIIA inhibitors, whereas the number of thrombotic complications was smaller than that reported in recent studies. The majority of sICH occurred in patients treated because of tandem lesions in an unknown or prolonged time window.

The principle of flow diversion has revolutionized the treatment of brain aneurysms. In this study, we report our experience of the new Surpass Evolve (SE) flow diverter in the treatment of intracranial aneurysms. Patients were treated with the SE as first-line therapy between May 2019 and June 2020 at 2 experienced institutions. Inclusion criteria were wide-necked, blister-like, or fusiform/dissecting aneurysms in the anterior and posterior circulation. Primary endpoint was technical success defined as favorable navigation to the target vessel and successful deployment of the SE. Secondary endpoints were favorable aneurysm occlusion defined as O’Kelly Marotta (OKM) scale C1-3 + D on follow-up, procedure-related complications and retreatment. A total of 46 aneurysms in 42 patients were treated with 57 SE flow diverters. Median aneurysm size was 6.6 mm (IQR 4.0–12.2 mm) with a median neck width of 4 mm (IQR 2.2–5.4 mm). On admission, 6 (13%) aneurysms were ruptured and 41 (89%) were located in the anterior circulation. The primary endpoint was reached in 96%. Median follow-up was 116 days (IQR 92–134 days) and available for 36/46 (78%) aneurysms. Favorable aneurysm occlusion was seen in 31/36 (86%) aneurysms and 27/36 (75%) were occluded completely. Parent artery occlusion appeared in 3 (3%) patients on follow-up and 2 aneurysms (6%) required additional treatment due to insufficient closure. The new SE flow diverter is safe and seems to be effective with promising occlusion rates at short-term follow-up.

BACKGROUND AND PURPOSE: The safety and efficacy of the Woven EndoBridge (WEB) device has been shown in multiple good clinical practice trials, whereas aneurysm locations in these trials were restricted to bifurcation aneurysms located at the circle of Willis (MCA bifurcation, ICA bifurcation, anterior communicating artery, basilar artery tip). Our aim was to evaluate angiographic and clinical results with the WEB 17 in aneurysm locations that were excluded from the good clinical practice trials, assuming that the angiographic and clinical results are similar to those of the good clinical practice trials for aneurysms in traditional locations. MATERIALS AND METHODS: We performed retrospective analysis of immediate and follow-up results of aneurysms in locations outside the good clinical practice trials in which the WEB 17 was used on an intention-to-treat approach. RESULTS: Between June 2017 and May 2020, forty-seven aneurysms in 44 patients met the inclusion criteria. Aneurysm locations were the ICA posterior communicating artery in 19 (40.3%), the ICA paraophthalmic or choroidal locations in 4 (8.6%), anterior cerebral artery A2 segment in 13 (27.7%), MCA M1 segment in 2 (4.3%), posterior cerebral artery P2 segment in 2 (4.3%), PICA in 3 (6.4%), and the superior cerebellar artery in 4 (8.4%) cases. The procedure-related morbidity and mortality rates in the entire series were 0.0%. The early and late (12 months) complete occlusion rates were 63.9% (23/36) and 77.8% (14/18), respectively. CONCLUSIONS: The WEB 17 is safe and effective in aneurysm locations different from the traditional bifurcation aneurysms included in the good clinical practice trials. Further studies will help to define the entire spectrum of aneurysm morphologies and locations suitable for the WEB 17.

The concept of intrasaccular flow diversion using the Woven EndoBridge (WEB) device changed the traditional endovascular concept for wide-necked bifurcation aneurysms. The latest technical advancement resulted in the WEB 17 system, a softer device composed of fewer wires which enables treatment of smaller more distally located aneurysms by using smaller microcatheters as compared to the WEB 21 system. This retrospective observational study aimed to evaluate and compare the angiographic and clinical results achieved with WEB 21 and WEB 17 in aneurysm morphologies eligible for both systems (maximum width 3–6 mm). Between August 2014 and August 2019 a total of 63 and 130 aneurysms with a maximum width of 3–6 mm were treated with either WEB 21 and WEB 17, respectively, at 2 neurovascular centers. Cases were analyzed based on a comparison regarding aneurysm size, location and rupture status. The technical success, the periprocedural complication rate and the rate of additional devices used showed no relevant differences between the two groups. Aneurysms treated with the WEB 17 system were smaller and more frequently distally located. The overall complete occlusion rate at 3 months was higher in the WEB 17 group (65.5% versus 55.1%). The superiority of complete aneurysm occlusion achieved with WEB 17 was statistically significant in the subgroup of unruptured middle cerebral artery aneurysms. The use of WEB 17 expands the treatment indications for intrasaccular flow-diversion towards smaller and more distally located aneurysms with a safety profile comparable with that of the WEB 21.

BACKGROUND AND PURPOSE: Stent-assisted treatment techniques can be an effective treatment option for intracranial aneurysms. The aim of this study was to evaluate the periprocedural feasibility and safety of the new LVIS EVO stent for the treatment of intracranial aneurysms. MATERIALS AND METHODS: Patients with intracranial aneurysms treated with the LVIS EVO in 11 European neurovascular centers were retrospectively reviewed. Patient and aneurysm characteristics, procedural parameters, immediate grade of occlusion, and technical and clinical complications were assessed. RESULTS: Fifty-seven patients with 59 aneurysms were treated with the LVIS EVO device; 57.6% of the aneurysms were incidental; 15.3% were acutely ruptured; 15.3% were recanalized or residual aneurysms; and 11.9% were treated for symptoms other than acute hemorrhage. The most frequent aneurysm locations were the middle cerebral artery (25.4%) and the anterior communicating artery (22.0%). The rate of immediate successful deployment was 93.2%. In 6.8% (n = 4) of cases, additional in-stent angioplasty was needed. The immediate complete occlusion rate was 54.2%, while there was a residual aneurysm in 35.6% and a residual neck in 10.2%. Periprocedural technical complications occurred in 7/59 treatments (11.9%; the most frequent technical complication [n = 3] was thrombus formation), which all resolved completely without clinical sequelae. Postprocedural neurologic complications occurred after 4/59 treatments (6.8%; 2 transient ischemic attacks, 1 minor stroke, 1 major stroke), of which only 1 persistent complication was directly related to the procedure (minor stroke in the vascular territory distal to the stent). CONCLUSIONS: The LVIS EVO stent is a safe, feasible device for the treatment of intracranial aneurysms.

Objective: The number of diagnosed fatal encephalitis cases in humans caused by the classical Borna disease virus (BoDV-1) has been increasing, ever since it was proved that BoDV-1 can cause human infections. However, awareness of this entity is low, and a specific imaging pattern has not yet been identified. We therefore provide the first comprehensive description of the morphology of human BoDV-1 encephalitis, with histopathological verification of imaging abnormalities. Methods: In an institutional review board-approved multicenter study, we carried out a retrospective analysis of 55 magnetic resonance imaging (MRI) examinations of 19 patients with confirmed BoDV-1 encephalitis. Fifty brain regions were analyzed systematically (T1w, T2w, T2*w, T1w + Gd, and DWI), in order to discern a specific pattern of inflammation. Histopathological analysis of 25 locations in one patient served as correlation for MRI abnormalities. Results: Baseline imaging, acquired at a mean of 11 ± 10 days after symptom onset, in addition to follow-up scans of 16 patients, revealed characteristic T2 hyperintensities with a predilection for the head of the caudate nucleus, insula, and cortical spread to the limbic system, whereas the occipital lobes and cerebellar hemispheres were unaffected. This gradient was confirmed by histology. Nine patients (47.4%) developed T1 hyperintensities of the basal ganglia, corresponding to accumulated lipid phagocytes on histology and typical for late-stage necrosis. Interpretation: BoDV-1 encephalitis shows a distinct pattern of inflammation in both the early and late stages of the disease. Its appearance can mimic sporadic Creutzfeldt–Jakob disease on MRI and should be considered a differential diagnosis in the case of atypical clinical presentation.

BackgroundData on the frequency and outcome of repeated mechanical thrombectomy (MT) in patients with short-term re-occlusion of intracranial vessels is limited. Addressing this subject, we report our multicenter experience with a systematic review of the literature.MethodsA retrospective analysis was conducted of consecutive acute stroke patients treated with MT repeatedly within 30 days at 10 tertiary care centers between January 2007 and January 2020. Baseline demographics, etiology of stroke, angiographic outcome and clinical outcome evaluated by the modified Rankin Scale (mRS) at 90 days were noted. Additionally, a systematic review of reports with repeated MT due to large vessel occlusion (LVO) recurrence was performed.ResultsWe identified 30 out of 7844 (0.4%) patients who received two thrombectomy procedures within 30 days due to recurrent LVO. Through systematic review, three publications of 28 participants met the criteria for inclusion. Combined, a total of 58 participants were analyzed: cardioembolic events were the most common etiology for the first (65.5%) and second LVO (60.3%), respectively. Median baseline NIHSS (National Institutes of Health Stroke Scale) was 13 (IQR 8–16) before the first MT and 15 (IQR 11–19) before the second MT (p=0.031). Successful reperfusion was achieved in 91.4% after the first MT and in 86.2% patients after the second MT (p=0.377). The rate of functional independence (mRS 0–2) was 46% at 90 days after the second procedure.ConclusionRepeated MT in short-term recurrent LVO is a rarity but appears to be safe and effective. The second thrombectomy should be pursued with the same extensive effort as the first procedure as these patients may achieve similar good outcomes.

BACKGROUND AND PURPOSE: Large intracranial vessel occlusion due to calcified emboli is a rare cause of major stroke. We assessed the prevalence, imaging appearance, the effectiveness of mechanical thrombectomy, and clinical outcome of patients with large-vessel occlusion due to calcified emboli. MATERIALS AND METHODS: We performed a retrospective analysis of clinical and procedural data of consecutive patients who underwent mechanical thrombectomy due to calcified emboli in 7 European stroke centers. RESULTS: We screened 2969 patients, and 40 patients matched the inclusion criteria, accounting for a prevalence of 1.3%. The mean maximal density of the thrombus was 327 HU (range, 150–1200 HU), and the mean thrombus length was 9.2 mm (range, 4–20 mm). Four patients had multiple calcified emboli, and 2 patients had an embolic event during an endovascular intervention. A modified TICI score of ≥2b was achieved in 57.5% (23/40), with minimal-to-no reperfusion (modified TICI 0–1) in 32.5% (13/40) and incomplete reperfusion (modified TICI 2a) in 10% (4/40). Excellent outcome (mRS 0–1) was achieved in only 20.6%, functional independence (mRS 0–2) in 26.5% and 90-day mortality was 55.9%. CONCLUSIONS: Acute ischemic stroke with large-vessel occlusion due to calcified emboli is a rare entity in patients undergoing thrombectomy, with considerably worse angiographic outcome and a higher mortality compared with patients with noncalcified thrombi. Good functional recovery at 3 months can still be achieved in about a quarter of patients.

Objective. Resection remains the most important form of treatment for patients with intracranial malignancies. The advantages of surgical resection must be balanced with the risk of surgery. Intraoperative neuromonitoring (IOM) is utilized to improve safety and enlarge the resection extent. However, comparative data on the use if IOM is scarce. Methods. Retrospective analysis of patients following resection of motor eloquent lesions between June 2018 and June 2020 was performed. A comparative analysis of the extend of resection; neurological squeal were compared between resections with or without IOM. Results. 66 patients (31 female, 35 male, age median, SD 62+/− 11,2) were identified. IOM was performed in 34 (51%) cases. 46% were female with a median age of 62 (range 31–82). There were no differences in baseline patient“s characteristics between both groups. 14% and 3% had a temporary neurological deterioration in the IOM and non-IOM group (P = 0,198), respectively. 3% and 15% had a permanent neurological in the IOM and non-IOM group, respectively (P = 0.100). 65% and 35% of resections were total and subtotal in both the IOM and non-IOM group (P = 0.027), respectively. Conclusion. IOM is associated with lower rates of new postoperative neurological deterioration with the same rate resection quality following resection of motor eloquent lesions.

BACKGROUND AND PURPOSE: Acute aneurysmal SAH is a severe disease that requires prompt treatment. Endovascular coiling and neurosurgical clipping are established treatment options. Our intention was to determine the state of current practice in acute aneurysmal SAH treatment in Germany, with emphasis on logistic and temporal aspects. MATERIALS AND METHODS: We interviewed 74 German university and nonuniversity hospitals with an anonymous questionnaire comprising 15 questions concerning the practice of treatment and diagnostics of acute aneurysmal SAH at their respective institutions. The response rate was 74% among all institutions (55/74); among university hospitals, 77%; and among nonuniversity hospitals, 72%. RESULTS: The majority of all aneurysms were treated endovascularly (66% of acute aneurysmal SAH, 66% of unruptured aneurysms). Treatment on weekends was provided by 100% of endovascular and 96% of neurosurgical facilities. Average patients with acute aneurysmal SAH were not treated during the night (98%). Seventy percent of endovascular and 78% of neurosurgical treatments were not started later than 8:00 pm. Fifty-three percent of hospitals would not start a same-day diagnostic angiography in acute aneurysmal SAH if treatment was scheduled for the following day. Eighty-two percent of all centers performed DSA after clipping to evaluate the treatment results. CONCLUSIONS: Our survey gives a detailed summary of the current practice of endovascular treatment and related topics in acute aneurysmal SAH in Germany and also reveals considerable changes in practice in comparison with older data.

Background: Calorie restriction (CR) retards aging and increases longevity in many animal models. However, it is unclear whether CR can be implemented in humans without adverse effects on body composition.Objective: We evaluated the effect of a 2-y CR regimen on body composition including the influence of sex and body mass index (BMI; in kg/m2) among participants enrolled in CALERIE-2 (Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy), a multicenter, randomized controlled trial.Design: Participants were 218 nonobese (BMI: 21.9-28.0) adults aged 21-51 y who were randomly assigned to 25% CR (CR, n = 143) or ad libitum control (AL, n = 75) in a 2:1 ratio. Measures at baseline and 12 and 24 mo included body weight, waist circumference, fat mass (FM), fat-free mass (FFM), and appendicular mass by dual-energy X-ray absorptiometry; activity-related energy expenditure (AREE) by doubly labeled water; and dietary protein intake by self-report. Values are expressed as means ± SDs.Results: The CR group achieved 11.9% ± 0.7% CR over 2-y and had significant decreases in weight (-7.6 ± 0.3 compared with 0.4 ± 0.5 kg), waist circumference (-6.2 ± 0.4 compared with 0.9 ± 0.5 cm), FM (-5.4 ± 0.3 compared with 0.5 ± 0.4 kg), and FFM (-2.0 ± 0.2 compared with -0.0 ± 0.2 kg) at 24 mo relative to the AL group (all between-group P < 0.001). Moreover, FFM as a percentage of body weight at 24 mo was higher, and percentage of FM was lower in the CR group than in the AL. AREE, but not protein intake, predicted preservation of FFM during CR (P < 0.01). Men in the CR group lost significantly more trunk fat (P = 0.03) and FFM expressed as a percentage of weight loss (P < 0.001) than women in the CR group.Conclusions: Two years of CR had broadly favorable effects on both whole-body and regional adiposity that could facilitate health span in humans. The decrements in FFM were commensurate with the reduced body mass; although men in the CR group lost more FFM than the women did, the percentage of FFM in the men in the CR group was higher than at baseline. CALERIE was registered at clinicaltrials.gov as NCT00427193.

BACKGROUND AND PURPOSE: Flow diversion emerged as a crucial treatment option for intracranial aneurysms. We report a multicenter retrospective analysis of the safety and efficacy in the treatment of intracranial aneurysms with the Flow-Redirection Endoluminal Device (FRED) flow diverter, a dual-layer flow-modulation device. MATERIALS AND METHODS: All intracranial aneurysms treated with the FRED between March 2013 and February 2016 at 4 neurovascular centers were included. Angiographic and clinical results were retrospectively analyzed, including all follow-up examinations. Aneurysms were unruptured in 44 cases, whereas 8 treatments were due to an acute SAH from the target aneurysm. RESULTS: Successful implantation of the FRED was possible in 96.2% (50/52) of cases. At 3-month follow-up, complete occlusion was determined in 58.1% (25/43) and near-complete in 25.6% (11/43). At 12-month follow-up, aneurysm occlusion was complete in 75.0% (27/36) and near-complete in 22.2% (8/36). The overall acute and late thromboembolic and hemorrhagic complication rate was 17.3% (9/52), with a permanent treatment-related morbidity and mortality of 4.0% (2/50) and 2.0% (1/50), respectively, to date. CONCLUSIONS: The FRED device offers an effective tool in the treatment of intracranial aneurysms. The dual-layer design promotes contemporary and stable long-term occlusion rates. Sufficient device expansion should be documented by angiographic CT. Further studies might help to identify a more optimal antiplatelet regimen to avoid thromboembolic complications during the follow-up period.

Background: Cerebral ischemia (CI) is an uncommon, sometimes life-threatening complication of active giant cell arteritis (aGCA) due to affection of the precerebral arteries. Aim of the Study: To analyze and describe clinical findings and results of multimodal vascular imaging of the craniocervical arteries. Patients and Methods: Out of 317 aGCA patients, 36 (11%) presented with CI. All patients underwent vascular imaging including ultrasonography (US) of the temporal arteries (TA) and precerebral arteries, biopsies were taken in 27, CTA/MRA were performed in 21 and FDG-PET in 18 patients. Results: In 72% of patients, CI was located in the posterior circulation and in14% of patients, it occurred after beginning of steroid therapy. TA were normal on clinical and US examination in 10 patients (with normal biopsies in 5) but PET demonstrated GCA of the precerebral arteries in 9 of them. Abnormalities of the precerebral arteries typical of GCA were demonstrated by US as halos in 67% (in 61% halos of the vertebral arteries), CTA/MRA in 43% and PET in 72% of patients. Concurrent etiologies for CI were evident in 19% of patients (including >50% ICA stenosis in 3 and atrial fibrillation in 4 patients). Conclusions: Awareness for GCA as a cause of CI requiring specific diagnostic and therapeutic steps is important. US, CTA, MRA and PET are valuable diagnostic tools for rapid detection of GCA involving the precerebral arteries in different stages of the disease even if the TA look normal.

PurposeTo evaluate the occurrence and risk factors of acute in-stent thrombosis or stent occlusion in patients with tandem occlusions receiving intracranial mechanical thrombectomy and emergent extracranial internal carotid artery stenting with a dual layer carotid stent.MethodsMulticenter retrospective data collection and analysis of stroke databases of seven comprehensive stroke centers from three European countries.ResultsOverall, 160 patients (mean (SD) age 66 (12) years; 104 men (65%); median (IQR) baseline NIHSS 14 (9–18); IV lysis, n=97 (60.6%)) were treated for a cervical carotid artery occlusion or stenosis using a CASPER stent (MicroVention), and received mechanical thrombectomy for an intracranial occlusion between April 2014 and November 2018. During the procedure or within 72 hours, formation of thrombus and complete occlusion of the CASPER stent was observed in 33/160 (20.8%) and in 12/160 patients (7.5%), respectively. In 25/33 (75.8%) and in 9/12 patients (75%), respectively, this occurred during the procedure. No statistically significant difference was observed between patients with and without thrombus formation with regard to pre-existing long term medication with anticoagulants or intraprocedural administration of heparin, acetylsalicylic acid (ASA), or heparin and ASA. Favorable early neurological outcome was similar in patients with (n=15; 45.5%) and without (n=63; 49.6%) thrombus formation at the CASPER stent.ConclusionAcute thrombosis or occlusion of CASPER stents in thrombectomy patients receiving emergent extracranial internal carotid artery stenting for tandem occlusions were observed more often during the procedure than within 72 hours of follow-up, were less frequent then previously reported, and showed no impact on early neurological outcome.

BACKGROUND AND PURPOSE: The Woven EndoBridge device proved its effectiveness in the treatment of ruptured and unruptured intracranial aneurysms as a stand-alone device. Before 2016, Woven EndoBridge deployment required at least a 0.021-inch microcatheter. In 2016, a smaller device, the Woven EndoBridge 17 with finer size increments that used a 0.017-inch microcatheter, was introduced. We retrospectively analyzed our initial and follow-up results with the Woven EndoBridge 17 in ruptured and unruptured aneurysms. MATERIALS AND METHODS: One hundred twenty-seven intracranial aneurysms in 117 patients were scheduled for treatment with the Woven EndoBridge 17 between June 2017 and February 2019. Twenty-nine aneurysms were ruptured. RESULTS: Treatment was performed as intended in 124 of 127 cases (97.6%). Additional devices such as stents or coils were used in 12 cases (9.7%). Five thromboembolic complications and 1 hemorrhagic complication were encountered, resulting in clinical deterioration in 2 patients. The overall morbidity and mortality in the entire series have been 1.7% and 0.0% to date, respectively. The follow-up results at 3 and 12 months revealed complete occlusion in 76.1% (70/92) and 78.0% (32/41). CONCLUSIONS: The Woven EndoBridge 17 device is safe in the treatment of small broad-based aneurysms without the general need for additional devices. The low complication rate and the promising follow-up results underline the value of this technique in a growing range of endovascular treatment options for intracranial aneurysms.

BACKGROUND AND PURPOSE: The optimal treatment of unruptured middle cerebral aneurysms is still under debate. Although today almost any aneurysm can be treated endovascularly, there is a lack of data comparing endovascular and microsurgical repair of MCA aneurysms. The aim of our analysis is to provide data on the efficacy, clinical outcome, complications and re-treatment rates of endovascular treatment of this subtype of aneurysms. MATERIALS AND METHODS: Between May 2008 and July 2017, endovascular treatment of 1184 aneurysms in 827 patients was performed in our department. Twenty-four percent of these aneurysms were located at the MCA, and 150 unruptured MCA bifurcation aneurysms treated with coiling, stent-assisted-coiling, or endovascular flow diverter (WEB device) were identified for this retrospective data analysis. Ninety-six percent of all aneurysms, ruptured and unruptured, were treated by an endovascular approach, which yields a low selection bias for aneurysms suitable for endovascular treatment. Follow-up examinations were performed after 12 and 36 months and then every 1–3 years after embolization. Procedures were analyzed for periprocedural complications, outcome, and retreatment rate of the WEB (n = 38) and coiling with (n = 45) or without stent assistance (n = 67). RESULTS: The procedure-associated good clinical outcome (mRS ≦ 2) was 89.9%, and the mortality rate was 2.7%. Short-term follow-up good clinical outcome/mortality rates were 91.3%/0.7%. At discharge, 137 patients had an mRS of 0–2 (91.3%) and 13 had an mRS of 3–6 (8.7%). The retreatment rate was significantly higher in the WEB group (21.1%) compared with the coiling group with (5.9%) or without (2.2%) stent placement (P CONCLUSIONS: Regardless of the architecture of MCA bifurcation aneurysms, the endovascular treatment can be performed with low morbidity/mortality rates. The higher retreatment rate in the WEB group correlates with the learning curve in choosing the right device size.

Introduction: Physically active individuals constantly seek resources that can improve their muscle performance, avoid the appearance of lesions and even relapses. Kinesio Taping has been used for both treatment/prevention of injury and to improve functional performance. The isokinetic dynamometer enables rapid quantitative analysis of many parameters of muscle function, being the peak torque the most representative in research and clinical practice. Objective: To compare the concentric peak torque isokinetic in active individuals with and without the application of kinesio taping. Method: 10 male volunteers were evaluated and submitted to the IPAQ questionnaire, where they were considered actives. Then, were realized isokinetic evaluations into steps: Phase Control (without application of elastic taping) and Phase Bandage (with application of placebo and original bandage). The same protocol isokinetic repetitions of 5 to 60 ° / s knee flexion and extension was adopted in all the stages for the reliability and reproducibility of the data. Results: The application of taping in physically active individuals in isokinetic evaluation did not increase the concentric peak torque at 60 °/s. Conclusion: Was observed reliability and reproducibility of the results, however, no significant differences were observed in concentric peak torque isokinetic of the quadriceps of active individuals with and without the application of the original kinesio taping and placebo.

Purpose Scope and clinical importance of interventional radiology markedly evolved over the last decades. Consequently it was acknowledged as independent subspecialty by the „European Union of Medical Specialists“ (UEMS). Based on radiological imaging techniques Interventional Radiology is an integral part of Radiology. Materials und Methods In 2009 the German Society for Interventional Radiology and minimally-invasive therapy (DeGIR) developed a structured training in Interventional Radiology. In cooperation with the German Society of Neuroradiology (DGNR) this training was extended to also cover Interventional Neuroradiology in 2012. Tailored for this training in Interventional Radiology a structured curriculum was developed, covering the scope of this modular training. Results The curriculum is based on the DeGIR/DGNR modular training concept in Interventional Radiology. There is also an European Curriculum and Syllabus for Interventional Radiology developed by the “Cardiovascular and Interventional Radiological Society of Europe” (CIRSE). The presented curriculum in Interventional Radiology is designed to provide a uniform base for the training in Interventional Radiology in Germany, based on the competencies obtained during residency. Conclusion This curriculum can be used as a basis for training in Interventional Radiology by all training sites. Key Points: Citation Format

Introduction The study objective is to assess the safety and performance of Neuroform Atlas Stent in the treatment of intracranial aneurysms. The protocol allowed for use of all types of coils and adjunctive technologies as deemed appropriate by the participating investigators. The primary study endpoint is the permanent morbidity and mortality rate, defined as any major ipsilateral stroke or neurological death within 12 to 16 months following the procedure. The study is still ongoing. We present here a descriptive analysis of procedure feasibility, clinical safety and acute angiographic results. Methods A total of 104 patients were included. Most patients were female (76%) with a mean age 55.1 year (SD=10.1). Sixteen patients (15%) had a prior (non-target) aneurysm treated. Most target aneurysms (n=82) were unruptured and elective cases (79.6%); 7 (6.8%) were symptomatic, and 9 (8.7%) were previously ruptured. Sixteen (15.5%) of target aneurysms had been previously treated. The size of aneurysms was 12 mm: 3 (2.9%). At baseline, 91 patients (87.5%) were symptom free (mRS=0), 11 mRS=1 and 2 mRS=2. Antiplatelet drugs were administrated prior, during and after the procedure according to each institution’s protocol and under the supervision of each participating investigator. Results A total of 129 Neuroform Atlas Stents were used in 104 patients (i.e. 2 stents in 20 patients, 3 and 4 stents each in one patient). In one patient, the stenting initially planned was abandoned. Major reason for using more than 2 stents was Y-stenting for bifurcation aneurysm. The stent was successfully implanted in 94.5% (121/128) of cases. The preferred coil delivery technique used was jailing (62.5%, n=65). Six procedural complications were observed including 2 in-stent thrombosis, 1 arterial occlusion, 1 access site complication, 1 contrast media encephalopathy and 1 perforation of the parent vessel. The latter event led to the patient death two days after the procedure. Upon the procedure, a complete aneurysm occlusion was observed in 69 patients (66.3%), residual neck and residual aneurysm were reported respectively in 22 (21.2%) and 13 (12.5%) patients. Mean time to discharge from hospital after the procedure was 3.29 days; none had undergone a re-intervention of target aneurysm at discharge. Eighteen patients (17.3%) experienced at least one adverse event between the procedure and discharge; 5 were serious, 12 of 22 events were not related to stent nor to the procedure. Acute clinical and angiographic assessments were self-reported. Conclusion These interim results suggest that Neuroform Atlas Stent System is a safe device and permit adequate aneurysm embolization; Final study analysis will allow for assessing system effectiveness and long-term safety. Disclosures A. Bonafe: 2; C; Stryker, Medtronic, MicroVention, Phenox, Balt. V. Costalat: 1; C; Stryker. 2; C; Medtronic, Balt, MicroVention, Stryker, Phenox. P. Schramm: 1; C; Siemens Healthineers, Penumbra. 2; C; Stryker, Penumbra. 3; C; Phenox, Cerenovus, Bracco, Bayer, Penumbra, Stryker, Siemens Healthineers. T. Eckey: 2; C; Stryker, Penumbra. X. Barreau: None. G. Marnat: None. M. Piotin: 2; C; Stryker, Medtronic, MicroVention, Balt, Penumbra. A. Berlis: 2; C; Stryker. W. Weber: 2; C; Medtronic, MicroVention, Xenon. 3; C; Penumbra, Stryker. K. Zelenak: None. A. Narata: None. M. Hartmann: 2; C; Stryker. J. Gentric: 2; C; Stryker. E. Houdart: 6; C; Stryker.

BACKGROUND AND PURPOSE: Endoluminal reconstruction with flow-diverting stents represents a widely accepted technique for the treatment of complex intracranial aneurysms. This European registry study analyzed the initial experience of 15 neurovascular centers with the Flow-Redirection Intraluminal Device (FRED) system. MATERIALS AND METHODS: Consecutive patients with intracranial aneurysms treated with the FRED between February 2012 and March 2015 were retrospectively reviewed. Complications and adverse events, transient and permanent morbidity, mortality, and occlusion rates were evaluated. RESULTS: During the defined study period, 579 aneurysms in 531 patients (median age, 54 years; range, 13–86 years) were treated with the FRED. Seven percent of patients were treated in the acute phase (≤3 days) of aneurysm rupture. The median aneurysm size was 7.6 mm (range, 1–36.6 mm), and the median neck size 4.5 mm (range, 1–30 mm). Angiographic follow-up of >3 months was available for 516 (89.1%) aneurysms. There was progressive occlusion witnessed with time, with complete occlusion in 18 (20%) aneurysms followed for up to 90 ± 14 days, 141 (82.5%) for 180 ± 20 days, 116 (91.3%) for 1 year ± 24 days, and 122 (95.3%) aneurysms followed for >1 year. Transient and permanent morbidity occurred in 3.2% and 0.8% of procedures, respectively. The overall mortality rate was 1.5%. CONCLUSIONS: This retrospective study in real-world patients demonstrated the safety and efficacy of the FRED for the treatment of intracranial aneurysms. In most cases, treatment with a single FRED resulted in complete angiographic occlusion at 1 year.

Supplemental Digital Content is available in the text., Background and Purpose— Endovascular embolization of intracranial aneurysms with hydrogel-coated coils lowers the risk of major recurrence, but technical limitations (coil stiffness and time restriction for placement) have prevented their wider clinical use. We aimed to assess the efficacy of softer, second-generation hydrogel coils. Methods— A randomized controlled trial was conducted at 22 centers in France and Germany. Patients aged 18 to 75 years with untreated ruptured or unruptured intracranial aneurysms measuring 4 to 12 mm in diameter were eligible and randomized (1:1 using a web-based system, stratified by rupture status) to coiling with either second-generation hydrogel coils or bare platinum coils. Assist devices were allowed as clinically required. Independent imaging core laboratory was masked to allocation. Primary end point was a composite outcome measure including major aneurysm recurrence, aneurysm retreatment, morbidity that prevented angiographic controls, and any death during treatment and follow-up. Data were analyzed as randomized. Results— Randomization began on October 15, 2009, and stopped on January 31, 2014, after 513 patients (hydrogel, n=256; bare platinum, n=257); 20 patients were excluded for missing informed consent and 9 for treatment-related criteria. Four hundred eighty-four patients (hydrogel, n=243; bare platinum, n=241) were included in the analysis; 208 (43%) were treated for ruptured aneurysms. Final end point data were available for 456 patients. Forty-five out of 226 (19.9%) patients in the hydrogel group and 66/230 (28.7%) in the control group had an unfavorable composite primary outcome, giving a statistically significant reduction in the proportion of an unfavorable composite primary outcome with hydrogel coils—adjusted for rupture status—of 8.4% (95% confidence interval, 0.5–16.2; P=0.036). Adverse and serious adverse events were evenly distributed between groups. Conclusions— Our results suggest that endovascular coil embolization with second-generation hydrogel coils may reduce the rate of unfavorable outcome events in patients with small- and medium-sized intracranial aneurysms. Clinical Trial Registration— URL: https://www.drks.de/drks_web/. Unique identifier: DRKS00003132.

International audience; The effectiveness of a hybrid hydrogel platinum detachable coil (HydroCoil; MicroVention Inc., Tustin, CA) for endovascular aneurysm treatment has been proven in a recently published RCT. Due to technical restrictions (coil stiffness, time restriction for placement), the HydroSoft coil as well as a corresponding 3D framing coil, the HydroFrame coil (MicroVention Inc., Tustin, CA), a class of new softer coils containing less hydrogel and swelling more slowly than the HydroCoil, have been developed and brought to clinical practice. The present study aims to compare the effectiveness of endovascular aneurysm treatment with coil embolization between patients allocated HydroSoft/HydroFrame versus bare platinum coiling. GREAT is a randomized, controlled, multicentre trial in patients bearing cerebral aneurysms to be treated by coil embolization. Eligible patients were randomized to either coil embolization with HydroSoft/HydroFrame coils (>50 % of administered coil length), or bare platinum coils. Inclusion criteria were as follows: age 18-75, ruptured aneurysm (WFNS 1-3) and unruptured aneurysm with a diameter between 4 and 12 mm. Anatomy such that endovascular coil occlusion deemed possible and willingness of the neurointerventionalist to use either HydroSoft/HydroFrame or bare platinum coils. Exclusion criteria were as follows: aneurysms previously treated by coiling or clipping. Primary endpoint is a composite of major aneurysm recurrence on follow-up angiography and poor clinical outcome (modified Rankin scale 3 or higher), both assessed at 18 months post treatment. Risk differences for poor outcomes will be estimated in a modified intention-to-treat analysis stratified by rupture status (DRKS-ID: DRKS00003132).

Background and purposeThrombectomy has become the standard of care for acute ischaemic stroke due to large vessel occlusion. Aim of this study was to compare the radiological outcomes and time metrics of the various thrombectomy techniques.MethodsIn this retrospective, multicenter study we analysed the data of 450 patients with occlusion of the anterior circulation, treated in five high-volume center from 2013 to 2016. The treatment techniques were divided in three categories: first-pass use of a large-bore aspiration-catheter; first-pass use of a stent-retriever; and primary combined approach (PCA) of an aspiration-catheter and stent-retriever. Primary endpoints were successful reperfusion and groin to reperfusion time. Secondary endpoints were the number of attempts and occurrence of emboli in new territory (ENT). The primary analysis was based on the intention to treat groups (ITT).ResultsThe ITT-analysis showed significantly higher reperfusion rates, with 86% of successful reperfusion in the PCA-group compared with 73% in the aspiration group and 65% in the stent-retriever group. There was no significant difference in groin to reperfusion time regarding the used technique. The secondary analysis showed an impact of the technique on the number of attempts and the occurrence of ENTs. Lowest ENT rates and attempts were reported with the combined approach.ConclusionsThe combined first-pass deployment of a stent-retriever and an aspiration-catheter was the most effective technique for reperfusion of anterior circulation large vessel occlusion. Our results correlate with the latest single-centrere studies, reporting very high reperfusion rates with PCA variations.

A 78-years-old male patient suffering from arterial hypertension presented in July 2013 to the neurologic department of a regional hospital after he had experienced two intermittent episodes of right facial and upper-extremity weakness. A native cranial computed tomography (CT) scan showed neither intracranial bleeding nor acute ischaemic lesions but a small patchy subcortical hypodensity within the left parietal lobe and moderate white matter gliosis. Suggesting transient ischaemic attacks (TIAs), the patient received acetylsalicylic acid (100 mg/day) and ramipril (2.5 mg/day). Two weeks later, another attack of transient dysarthria and paraesthesia occurred. While the native cranial CT did not show any new parenchymal lesions, supra-aortic CT angiography demonstrated an approximately 50 % proximal stenosis of the right vertebral artery. The orbits were unremarkable. Colour-coded duplex sonography (CCDS) of the cranial arteries revealed no significant stenosis, as well. There were no signs of inflammation in the laboratory investigation. Suspecting epileptic seizures, an anticonvulsive treatment with levetiracetam (1.5 g/day) was started, and no further attacks occurred. In October 2013, the patient presented a third time to the hospital with new-onset temporal headache, neck pain, jaw claudication and an ongoing visual deterioration of the left eye (OS). GCA was already suspected by the general practitioner, and steroid therapy was started at a daily dose List of Abbreviations

Acute major stroke with high-grade stenosis or occlusion of the extracranial internal carotid artery (ICA) and additional intracranial large artery occlusion is increasingly treated with a mechanical endovascular approach by extracranial stenting and intracranial thrombectomy due to poor response to systemic thrombolysis with recombinant tissue plasminogen activator (rtPA). This article presents a single centre cohort of this challenging subtype of stroke, describing the technical procedure and analysing the angiographic and clinical outcome.Clinical and imaging data of all consecutive patients between July 2008 and March 2013 with intracranial artery occlusion in the anterior circulation and additional occlusion or pseudo-occlusion of the cervical ICA were retrospectively analysed with respect to demographical and clinical characteristics. Technical approach, recanalization rate, recanalization time and short-term clinical outcome were determined.A total of 43 patients with tandem occlusion in the anterior circulation met the inclusion criteria. Out of these, 32 (74.4%) occlusions and 11 (25.6%) pseudo-occlusions of the extracranial ICA with additional occlusion of the distal segment of the ICA in 7.0% (3/43), the M1-segment of the middle cerebral artery (MCA) in 81.4% (35/43) or the M2-segment of the MCA in 11.6% (5/43) of cases were treated with combined endovascular approach including extracranial stenting with angioplasty and intracranial mechanical thrombectomy. In 76.7% of cases, an angiographic recanalization result of 2b or 3 using the Thrombolysis in Cerebral Infarction (TICI) score was achieved. Mean time from first angiographic series to recanalization was 103 min. A modified Rankin Scale (mRS) score of ≤ 2 was achieved in 32.6% at the time of discharge.Endovascular therapy of patients with tandem occlusion in the anterior circulation with emergency extracranial stenting and intracranial mechanical thrombectomy appears to be safe and may lead to a satisfactory angiographic result and clinical outcome.

Ureaplasma urealyticum is a fastidious bacterium usually residing in the female genitourinary tract. We present an exceedingly complicated case of a brain abscess secondary to mastoiditis by U. urealyticum in an adult hypogammaglobulinemic patient after rituximab treatment 3 years earlier.

retrievern“ allein oder in Kombination mit geeigneten Aspirationskathetern. Die Evidenz dieser Methode wurde kurzlich in mehreren Studien belegt [1–4]. Steigende Interventionszahlen, Interventionsarten mit immer mehr und komplexeren Materialien, bei steigender Anzahl der interventionell tatigen Institute, machen es immer schwieriger, einen Uberblick uber die Behandlungen zu behalten, die im Verantwortungsbereich der Deutschen Gesellschaft fur Neuroradiologie (DGNR) durchgefuhrt worden sind und werden. Die Frage zu beantworten: Was tun wir eigentlich, mit welchem Erfolg, wird immer schwieriger. Jeder fur sich mag das fur sein Institut beantworten konnen, aber schon der Vergleich mit anderen stost an Grenzen, weil hierzu Daten fehlen. Die Darstellung unseres medizinischen Handelns gegenuber unseren Patienten, unseren klinischen Partnern, den wirtschaftlich in unserem Krankenhaus Verantwortlichen und gegenuber den Kostentragern in unserem Gesundheitssystem wird immer wichtiger, um die Zukunft der interventionell neuroradiologischen Verfahren in unseren Handen zu sichern. Wir glauben zu wissen, dass wir Gutes tun. Es wird aber immer bedeutender, dass die Anderen das sehen und belegt bekommen. Wir mussen unsere medizinischen Handlungen erfassen, darstellen und kommunizieren und zwar nicht als einzelne Institution, sondern als Gesellschaft. Qualitatssicherung kann ein wertvolles berufspolitisch machtiges Werkzeug sein, dies z. B. auf dem Gebiet der Fortund Weiterbildung oder als Lieferant von Informationen zu okonomischen und wissenschaftlichen Aspekten der interventionellen Radiologie. Zum Teil ist die Teilnahme an Qualitatssicherung(QS)-Programmen bereits mit der Vergutung unserer Behandlungen verbindlich verknupft [AQUA-Institut – „carotid endarterectomy“ (CEA) und „carotid artery stenting“ (CAS)]. Ein geeignetes Instrument zur QS in der interventionellen Radiologie und Neuroradiologie ist das DeGIR-QS-ReQuality assurance in interventional neuroradiology