Search

Your search keyword '"Polanski, Witold"' showing total 140 results
Start Over Author "Polanski, Witold"
140 results on '"Polanski, Witold"'

6. Resolution-enhanced multi-core fiber imaging learned on a digital twin for cancer diagnosis.

Author

Tijue Wang, Dremel, Jakob, Richter, Sven, Polanski, Witold, Uckermann, Ortrud, Eyüpoglu, Ilker, Czarske, Jürgen W., and Kuschmierz, Robert

Subjects
DIGITAL twins, DEEP learning, IMAGE reconstruction, DIGITAL learning, SIGNAL-to-noise ratio
Abstract

Significance: Deep learning enables label-free all-optical biopsies and automated tissue classification. Endoscopic systems provide intraoperative diagnostics to deep tissue and speed up treatment without harmful tissue removal. However, conventional multi-core fiber (MCF) endoscopes suffer from low resolution and artifacts, which hinder tumor diagnostics. Aim: We introduce a method to enable unpixelated, high-resolution tumor imaging through a given MCF with a diameter of around 0.65 mm and arbitrary core arrangement and inhomogeneous transmissivity. Approach: Image reconstruction is based on deep learning and the digital twin concept of the single-reference-based simulation with inhomogeneous optical properties of MCF and transfer learning on a small experimental dataset of biological tissue. The reference provided physical information about the MCF during the training processes. Results: For the simulated data, hallucination caused by the MCF inhomogeneity was eliminated, and the averaged peak signal-to-noise ratio and structural similarity were increased from 11.2 dB and 0.20 to 23.4 dB and 0.74, respectively. By transfer learning, the metrics of independent test images experimentally acquired on glioblastoma tissue ex vivo can reach up to 31.6 dB and 0.97 with 14 fps computing speed. Conclusions: With the proposed approach, a single reference image was required in the pre-training stage and laborious acquisition of training data was bypassed. Validation on glioblastoma cryosections with transfer learning on only 50 image pairs showed the capability for high-resolution deep tissue retrieval and high clinical feasibility. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

9. Contributors

Author

Acuña, Mario A., primary, Aiyer, Rohit, additional, Albu, Sergiu, additional, Altarifi, Ahmad, additional, Altıntaş Aykan, Duygun, additional, Álvarez-Cubero, María Jesús, additional, Ambron, Richard T., additional, Arenas-Rodríguez, Verónica, additional, Arima, Yosuke, additional, Artero, Nayara Anitelli, additional, Bandeira, Janete S., additional, Becerro-de-Bengoa-Vallejo, Ricardo, additional, Bellefroid, Eric J., additional, Benjeddou, Mongi, additional, Borghi, Sergio Marques, additional, Calvo-Lobo, César, additional, de Campos Lima, Taís, additional, Campos-Jurado, Yolanda, additional, Carvalho, Thacyana Teixeira, additional, Casagrande, Rubia, additional, Caumo, Wolnei, additional, Cerne, Rok, additional, Chakravarthy, Krishnan, additional, Cook, James M., additional, Costa, Fabiano V., additional, Cuenca-López, Sergio, additional, Cuitavi, Javier, additional, D’Eon, Maya, additional, Delgado-Lezama, Rodolfo, additional, Desiderio, Simon, additional, Dussan-Sarria, Jairo Alberto, additional, Estévez-López, Fernando, additional, Ferraz, Camila Rodrigues, additional, Fisher, Janet L., additional, Franciosi, Anelise, additional, Franco-Enzástiga, Úrzula, additional, Fujitani, Masashi, additional, Ghafouri-Fard, Soudeh, additional, Golani, Lalit K., additional, Gowda, Shaila, additional, Granados-Soto, Vinicio, additional, Gungor, Semih, additional, Hajiesmaeil, Mogge, additional, Han, Hee Chul, additional, Hellman, Natalie, additional, Hernández-Reyes, Luis Eduardo, additional, Hipólito, Lucia, additional, Holmes, S.A., additional, Kalueff, Allan V., additional, Kasanetz, Fernando, additional, Kassab, Manal, additional, Kim, Seonghoon, additional, Klein, Johann, additional, Knutson, Daniel E., additional, Kokki, Hannu, additional, Kokki, Merja, additional, De la Luz-Cuellar, Yarim E., additional, Landsberg, Natalia, additional, Linsenbardt, Hans, additional, López-López, Daniel, additional, Lorente, Jesús D., additional, Losa-Iglesias, Marta Elena, additional, Lotufo, Celina Monteiro da Cruz, additional, Martínez-González, Luis Javier, additional, Martínez-Jiménez, Eva María, additional, Mazoteras-Pardo, Victoria, additional, Meagher, Mary W., additional, Milanović, Desanka, additional, Miyamoto, Keisuke, additional, Murbartián, Janet, additional, Nevian, Thomas, additional, Nuseir, Khawla Q., additional, Ohsawa, Masahiro, additional, Otani, Yoshinori, additional, Paladini, Antonella, additional, Palermo, Sara, additional, Park, Eui Ho, additional, Park, Jeong-wook, additional, Patel, Vinood B., additional, Pavković, Željko, additional, Peiró, Ana M., additional, Pešić, Vesna, additional, Pierce, M.E., additional, Polanski, Witold H., additional, Preedy, Victor R., additional, Quinlan, A., additional, Rajendram, Rajkumar, additional, Rasquel-Oliveira, Fernanda Soares, additional, Raya-Tafolla, Guadalupe, additional, Rekatsina, Martina, additional, Rhudy, Jamie L., additional, Rodríguez-Sanz, David, additional, Romero-Morales, Carlos, additional, Root-Bernstein, Robert, additional, Rosa, Luiz V., additional, Rosemberg, Denis B., additional, Rutledge, Thomas, additional, Saltelli, Giorgia, additional, San-Antolín-Gil, Marta, additional, Santos, Débora de Oliveira, additional, Saraiva-Santos, Telma, additional, Sleigh, Jamie, additional, Smith, Jodi L., additional, Sobhani, Maryam, additional, Sung, Ying-Ju, additional, Szabó, Charles Akos, additional, Torres-López, Jorge E., additional, Varrassi, Giustino, additional, Varshney, Vishal, additional, Vermeiren, Simon, additional, Verri, Waldiceu A., additional, Voss, Logan, additional, Witkin, Jeffrey M., additional, Wu, Zizhen, additional, Yang, Qing, additional, Yazarlou, Fatemeh, additional, and Zakaria, Zainul Amiruddin, additional

Published
2022
Full Text
View/download PDF

10. Prospective surgical solutions in degenerative spine: spinal simulation for optimal choice of implant and targeted device development

Author

Salchow-Gille Monique, Rieger Bernhard, Reinshagen Clemens, Molcanyi Marek, Lemke Joschka, Brautferger Uta, Sitoci-Ficici Kerim Hakan, Polanski Witold, Pinzer Thomas, and Schackert Gabriele

Subjects
biokinemetrie, cage, discectomy, functional replacement, fusion, minimally invasive spine surgery, prosthesis, range of motion, simulation, Surgery, RD1-811
Abstract

The most important goal of surgical treatment for spinal degeneration, in addition to eliminating the underlying pathology, is to preserve the biomechanically relevant structures. If degeneration destroys biomechanics, the single segment must either be surgically stabilized or functionally replaced by prosthetic restoration. This study examines how software-based presurgical simulation affects device selection and device development.

Published
2021
Full Text
View/download PDF

18. Einfluss einer leichtgradigen Subarachnoidalblutung auf die Lebensqualität der Patienten nach Clipping intrakranieller Aneurysmen

Author

Polanski, Witold, Sobottka, Stephan, Linn, Jennifer, Technische Universität Dresden, Lehmann, Michelle Thérèse, Polanski, Witold, Sobottka, Stephan, Linn, Jennifer, Technische Universität Dresden, and Lehmann, Michelle Thérèse

Abstract

Vorliegende Dissertation untersucht den Einfluss einer leichtgradigen Subarachnoidalblutung (SAB, Hunt & Hess Grad 1-2) auf das Outcome der Patienten nach Clipping intrakranieller Aneurysmen im Vergleich zu elektivem Clipping unrupturierter Aneurysmen. Es wurden insgesamt 588 Patienten aus dem Zeitraum zwischen 2009 und 2020 eingeschlossen (458 Patienten mit einer SAB, darunter 104 Patienten mit einer SAB Hunt & Hess Grad 1-2 und Clipping; 130 Patienten mit elektivem Clipping). Eine Populationsanalyse, Dokumentation des Therapieverlaufs und Evaluation des Outcomes der Patienten zum Entlassungszeitpunkt erfolgte retrospektiv anhand der Patientenakten. Nach etwa 6 Jahren im Median erfolgte eine erneute Abfrage der Lebensqualität bei 53 SAB-Patienten und 67 elektiv geclippten (EC) Patienten via Telefoninterview. Das Outcome der Patienten wurde mittels Glasgow Outcome Scale Extended (GOSE), Modified Rankin Scale (mRS), dem Score der World Federation of Neurosurgical Societies (WFNS), dem Barthel Index und dem Short Form 36 – Fragebogen erfasst. Eine statistische Analyse der Einflussfaktoren auf das Outcome der Patienten erfolgte sowohl uni- als auch multivariat mittels Pearson-Chi-Quadrat Test, Mann-Whitney-U Test und Kruskal-Wallis Test. Die Ergebnisse der vorliegenden Studie zeigten einen signifikanten Unterschied im kurzfristigen, sowie langfristigen Outcome der untersuchten Patienten in mehreren Scores. So erreichten unter den elektiv geclippten Patienten zum Entlassungszeitpunkt in der GOSE (7-8 Punkte) und in der mRS (0-1 Punkt) jeweils etwa 70% der Patienten ein sehr gutes Outcome, wohingegen dies für die Patienten mit leichtgradiger aSAB nur für etwa 40% der Patienten galt (p = < 0,001). Auch im Follow-up konnten diese Ergebnisse bestätigt werden (GOSE 7-8 Punkte: 74,6% vs. 54,7%, p = 0,022). Im Score der WFNS zeigte sich dieser Unterschied unmittelbar postoperativ weniger deutlich (93,8% vs. 80,8%). Beide Patientengruppen gaben die meisten Beschwerden aufgrund

Published
2023

19. Morbidity Milestones Demonstrate Long Disability‐Free Survival in Parkinson's Disease Patients with Deep Brain Stimulation of the Subthalamic Nucleus

Author

Schnalke, Nils, primary, Konitsioti, Agni, additional, Frank, Anika, additional, Kurz, Martin, additional, Polanski, Witold H., additional, Themann, Peter, additional, Wolz, Martin, additional, Sobottka, Stephan B., additional, Reichmann, Heinz, additional, Falkenburger, Bjoern, additional, and Klingelhoefer, Lisa, additional

Published
2023
Full Text
View/download PDF

20. Characterization of cortical hemodynamic changes following sensory, visual, and speech activation by intraoperative optical imaging utilizing phase‐based evaluation methods

Author

Oelschlägel, Martin, Polanski, Witold H., Morgenstern, Ute, Steiner, Gerald, Kirsch, Matthias, Koch, Edmund, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
Adult, Male, Nociception, nociceptive stimuli, Intraoperative Neurophysiological Monitoring, Neuroimaging, Young Adult, speech activation, Humans, Research Articles, Aged, Cerebral Cortex, Brain Neoplasms, Optical Imaging, Middle Aged, cortical hemodynamics, intraoperative optical imaging, Touch Perception, tactile stimulation, Cerebrovascular Circulation, Speech Perception, Visual Perception, visual, Female, Perception, Research Article
Abstract

Alterations within cerebral hemodynamics are the intrinsic signal source for a wide variety of neuroimaging techniques. Stimulation of specific functions leads due to neurovascular coupling, to changes in regional cerebral blood flow, oxygenation and volume. In this study, we investigated the temporal characteristics of cortical hemodynamic responses following electrical, tactile, visual, and speech activation for different stimulation paradigms using Intraoperative Optical Imaging (IOI). Image datasets from a total of 22 patients that underwent surgical resection of brain tumors were evaluated. The measured reflectance changes at different light wavelength bands, representing alterations in regional cortical blood volume (CBV), and deoxyhemoglobin (HbR) concentration, were assessed by using Fourier‐based evaluation methods. We found a decrease of CBV connected to an increase of HbR within the contralateral primary sensory cortex (SI) in patients that were prolonged (30 s/15 s) electrically stimulated. Additionally, we found differences in amplitude as well as localization of activated areas for different stimulation patterns. Contrary to electrical stimulation, prolonged tactile as well as prolonged visual stimulation are provoking increases in CBV within the corresponding activated areas (SI, visual cortex). The processing of the acquired data from awake patients performing speech tasks reveals areas with increased, as well as areas with decreased CBV. The results lead us to the conclusion, that the CBV decreases in connection with HbR increases in SI are associated to processing of nociceptive stimuli and that stimulation type, as well as paradigm have a nonnegligible impact on the temporal characteristics of the following hemodynamic response., Cortical hemodynamics after electrical, tactile, visual and speech activation of functional areas were evaluated by Intraoperative Optical Imaging using a FFT approach with phase angle valuation of the signal. Significant differences in the hemodynamic response following the different stimulation types were found.

Published
2021

22. Topographic Mapping of the Primary Sensory Cortex Using Intraoperative Optical Imaging and Tactile Irritation

Author

Polanski, Witold H., Oelschlägel, Martin, Juratli, Tareq A., Wahl, Hannes, Krukowski, Pawel M., Morgenstern, Ute, Koch, Edmund, Steiner, Gerald, Schackert, Gabriele, Sobottka, Stephan B., Polanski, Witold H., Oelschlägel, Martin, Juratli, Tareq A., Wahl, Hannes, Krukowski, Pawel M., Morgenstern, Ute, Koch, Edmund, Steiner, Gerald, Schackert, Gabriele, and Sobottka, Stephan B.

Abstract

The determination of exact tumor boundaries within eloquent brain regions is essential to maximize the extent of resection. Recent studies showed that intraoperative optical imaging (IOI) combined with median nerve stimulation is a helpful tool for visualization of the primary sensory cortex (PSC). In this technical note, we describe a novel approach of using IOI with painless tactile irritation to demonstrate the feasibility of topographic mapping of different body regions within the PSC. In addition, we compared the IOI results with preoperative functional MRI (fMRI) findings. In five patients with tumors located near the PSC who received tumor removal, IOI with tactile irritation of different body parts and fMRI was applied. We showed that tactile irritation of the hand in local and general anesthesia leads to reliable changes of cerebral blood volume during IOI. Hereby, we observed comparable IOI activation maps regarding the median nerve stimulation, fMRI and tactile irritation of the hand. The tactile irritation of different body areas revealed a plausible topographic distribution along the PSC. With this approach, IOI is also suitable for awake surgeries, since the tactile irritation is painless compared with median nerve stimulation and is congruent to fMRI findings. Further studies are ongoing to standardize this method to enable a broad application within the neurosurgical community.

Published
2022

24. Cover Image

Author

Oelschlägel, Martin, primary, Polanski, Witold H., additional, Morgenstern, Ute, additional, Steiner, Gerald, additional, Kirsch, Matthias, additional, Koch, Edmund, additional, Schackert, Gabriele, additional, and Sobottka, Stephan B., additional

Published
2022
Full Text
View/download PDF

26. Phasenbasierte optimierte Auswertung und Visualisierung zur Darstellung funktioneller Hirnareale während neurochirurgischer Eingriffe

Author

Oelschlägel, Martin, Polanski, Witold H., Steiner, Gerald, Kirsch, Matthias, Koch, Edmund, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
genetic structures, ddc: 610, sense organs, 610 Medical sciences, Medicine, eye diseases
Abstract

Objective: Intraoperative Optical Imaging (IOI) is a marker free and non-invasive imaging technique that can be utilized for visualization of metabolic changes within the cerebral cortex. During neurosurgical interventions, we use the method in clinical routine to visualize specific functional brain[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Published
2021

27. Organische Dünnschichttransistor-basierte Elektroden zur Messung und Modulation intrazerebraler Nervenaktivität

Author

Kaveh, Olka, Neumann, Karsten, Schackert, Gabriele, and Polanski, Witold H.

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Deep brain stimulation (DBS) is an accepted treatment option for various neurological diseases. Common commercial used leads enables only coarsemeshed stimulation and neurosensing due to the comparative big contacts and doesn’t meet the needed requirements for highly selective and [for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Published
2021
Full Text
View/download PDF

28. Implantation von direktionalen Elektroden führt zu einer verbesserten Ergebnisqualität der tiefen Hirnstimulation bei Patienten mit idiopathischen Parkinsonsyndrom

Author

Polanski, Witold H., Klingelhöfer, Lisa, Zolal, Amir, Klein, Johann, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Recent developments of more complex lead designs for deep brain stimulation with a greater number of contacts and the ability to alter the shape of stimulation fields were introduced to enlarge the therapeutic window in deep brain stimulation. We evaluated, whether these directional leads[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Published
2021

29. Einfluss von Zertifizierungen und Digitalisierung auf die Patientensicherheit

Author

Polanski, Witold H., Podlesek, Dino, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Accreditation and digitalization are common tools to improve the efficacy of processes in clinical routine. The aim of this study was to elucidate, whether measures for quality management and digitalization have the ability to reduce treatment risks of patients in a surgical clinic. [for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Published
2021

32. Prospective surgical solutions in degenerative spine: spinal simulation for optimal choice of implant and targeted device development

Author

Salchow-Gille, Monique, Rieger, Bernhard, Reinshagen, Clemens, Molcanyi, Marek, Lemke, Joschka, Brautferger, Uta, Sitoci-Ficici, Kerim Hakan, Polanski, Witold, Pinzer, Thomas, Schackert, Gabriele, Salchow-Gille, Monique, Rieger, Bernhard, Reinshagen, Clemens, Molcanyi, Marek, Lemke, Joschka, Brautferger, Uta, Sitoci-Ficici, Kerim Hakan, Polanski, Witold, Pinzer, Thomas, and Schackert, Gabriele

Abstract

Objectives: The most important goal of surgical treatment for spinal degeneration, in addition to eliminating the underlying pathology, is to preserve the biomechanically relevant structures. If degeneration destroys biomechanics, the single segment must either be surgically stabilized or functionally replaced by prosthetic restoration. This study examines how software-based presurgical simulation affects device selection and device development. Methods: Based on videofluoroscopic motion recordings and pixel-precise processing of the segmental motion patterns, a software-based surrogate functional model was validated. It characterizes the individual movement of spinal segments relative to corresponding cervical or lumbar spine sections. The single segment-based motion of cervical or lumbar spine of individual patients can be simulated, if size-calibrated functional X-rays of the relevant spine section are available. The software plug-in biokinemetric triangle has been then integrated into this software to perform comparative segmental motion analyses before and after treatment in two cervical device studies: the correlation of implant-induced changes in the movement geometry and patient-related outcome was examined to investigate, whether this surrogate model could provide a guideline for implant selection and future implant development. Results: For its validation in 253 randomly selected patients requiring single-level cervical (n=122) or lumbar (n=131) implant-supported restoration, the biokinemetric triangle provided significant pattern recognition in comparable investigations (p<0.05) and the software detected device-specific changes after implant-treatment (p<0.01). Subsequently, 104 patients, who underwent cervical discectomy, showed a correlation of the neck disability index with implant-specific changes in their segmental movement geometry: the preoperative simulation supported the best choice of surgical implants, since the best outcome resulted from restr

Published
2021

36. Parcellation of the Subthalamic Nucleus in Parkinson’s Disease: A Retrospective Analysis of Atlas- and Diffusion-Based Methods

Author

Zolal, Amir, primary, Polanski, Witold H., additional, Klingelhoefer, Lisa, additional, Kitzler, Hagen H., additional, Linn, Jennifer, additional, Podlesek, Dino, additional, Sitoci-Ficici, Kerim Hakan, additional, Reichmann, Heinz, additional, Leonhardt, Georg Karl, additional, Schackert, Gabriele, additional, and Sobottka, Stephan B., additional

Published
2020
Full Text
View/download PDF

38. Characterization of cortical hemodynamic changes following sensory, visual, and speech activation by intraoperative optical imaging utilizing phase‐based evaluation methods.

Author

Oelschlägel, Martin, Polanski, Witold H., Morgenstern, Ute, Steiner, Gerald, Kirsch, Matthias, Koch, Edmund, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
*OPTICAL images, *HEMODYNAMICS, *BLOOD volume, *EVALUATION methodology, *CEREBRAL circulation
Abstract

Alterations within cerebral hemodynamics are the intrinsic signal source for a wide variety of neuroimaging techniques. Stimulation of specific functions leads due to neurovascular coupling, to changes in regional cerebral blood flow, oxygenation and volume. In this study, we investigated the temporal characteristics of cortical hemodynamic responses following electrical, tactile, visual, and speech activation for different stimulation paradigms using Intraoperative Optical Imaging (IOI). Image datasets from a total of 22 patients that underwent surgical resection of brain tumors were evaluated. The measured reflectance changes at different light wavelength bands, representing alterations in regional cortical blood volume (CBV), and deoxyhemoglobin (HbR) concentration, were assessed by using Fourier‐based evaluation methods. We found a decrease of CBV connected to an increase of HbR within the contralateral primary sensory cortex (SI) in patients that were prolonged (30 s/15 s) electrically stimulated. Additionally, we found differences in amplitude as well as localization of activated areas for different stimulation patterns. Contrary to electrical stimulation, prolonged tactile as well as prolonged visual stimulation are provoking increases in CBV within the corresponding activated areas (SI, visual cortex). The processing of the acquired data from awake patients performing speech tasks reveals areas with increased, as well as areas with decreased CBV. The results lead us to the conclusion, that the CBV decreases in connection with HbR increases in SI are associated to processing of nociceptive stimuli and that stimulation type, as well as paradigm have a nonnegligible impact on the temporal characteristics of the following hemodynamic response. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

39. Können digitale Formulare die Patientenaufnahme in der Neurochirurgie verbessern?

Author

Polanski, Witold, Danker, Adrian, Zolal, Amir, Senf-Mothes, David, Schackert, Gabriele, and Krex, Dietmar

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Electronic health records (EHRs) are controversial but have the potential to improve patient care. We investigated whether a digital admission and assessment documentation form for neurosurgical patients may have an impact on the quality and duration of documentation of the neurosurgeons [for full text, please go to the a.m. URL], 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Published
2019

40. Vergleich von Certoparin, Enoxaparin und Kompressionsstrümpfen zur thrombembolischen Prophylaxe bei neurochirurgischen Patienten

Author

Polanski, Witold, Krex, Dietmar, and Schackert, Gabriele

Subjects
ddc: 610, cardiovascular diseases, 610 Medical sciences, Medicine
Abstract

Objective: Postoperative thromboembolic events are a serious surgical complication and results most often in morbidity and mortality. In neurosurgical patients, the risk for venous thromboembolisms (VTE), including pulmonary embolism (PE) and deep venous thrombosis (DVT), is very high (range 0 to 5%)[for full text, please go to the a.m. URL], 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Published
2019

41. Das Outcome der tiefen Hirnstimulation im Nucleus subthalamicus korreliert mit der Elektrodenposition relativ zu der kortikalen Konnektivität aus der diffusionsbasierten Parzellierung

Author

Zolal, Amir, Polanski, Witold, Klingelhoefer, Lisa, Kitzler, Hagen, Linn, Jennifer, Podlesek, Dino, Sitoci, Hakan, Loewenbrueck, Kai, Reichmann, Heinz, Leonhardt, Georg, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
surgical procedures, operative, nervous system, ddc: 610, 610 Medical sciences, Medicine, therapeutics, nervous system diseases
Abstract

Objective: Deep brain stimulation (DBS) is an established method of treatment of the Parkinson disease (PD). However, the optimal location of the DBS electrode within the subthalamic nucleus (STN) is a matter of debate. The aim of this study was to analyze the association between the outcome of the [for full text, please go to the a.m. URL], 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Published
2019

43. Adjustment of axial load characteristics of polyurethane foam in a porcine spine model for spondyloplasty

Author

Polanski, Witold, Jiang, Hongzhen, Molcanyi, Marek, Zivcak, Jozef, Ruess, Daniel, Reinshagen, Clemens, Schackert, Gabriele, and Rieger, Bernhard

Subjects
body regions, ddc: 610, technology, industry, and agriculture, macromolecular substances, 610 Medical sciences, Medicine, equipment and supplies
Abstract

Objective: Polymethylmetacrylate (PMMA) bone cement is widely used in the vertebral body. PMMA has about seven to ten times higher elastic modulus than normal cancellous bone what increases stiffness of PMMA augmented vertebral body by 174%. While augmentation with PMMA is highly successful in [for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Published
2017

44. Diffusion connectivity parcellation based analysis of electrode positions in the subthalamic nucleus

Author

Zolal, Amir, Polanski, Witold, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: The functional specialization of various regions within the subthalamic nucleus (STN) seems to play a role in the effectivity of treatment with deep brain stimulation (DBS). Diffusion tensor based analyses have been shown to enable the parcellation of the STN into distinct subregions. We [for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Published
2017
Full Text
View/download PDF

45. Is an effective functional replacement of a lumbar Segment possible? Biokinemetrie as a surgical projection

Author

Rieger, Bernhard, Jiang, Hongzhen, Polanski, Witold, Molcanyi, Marek, Zivcak, Jozef, Reinshagen, Clemens, Schackert, Gabriele, and Welsch, Norbert

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Spine’s extent of movement is larger than the linear sum of the individual movements of the facet joints. Such small movements of the facet joints, which guide the whole segmental movement, are progressively added together via lever arms. Describing the segmental motion pattern we [for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Published
2017

46. Probabilistic DTI based depiction of the facial nerve in vestibular schwannoma

Author

Zolal, Amir, Polanski, Witold, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
ddc: 610, otorhinolaryngologic diseases, 610 Medical sciences, Medicine
Abstract

Objective: According to our previous results, probabilistic tractography might be more successful in depicting cranial nerves compared to the common deterministic method. We have examined the utility of this technique in patients harboring large vestibular schwannomas. Methods: Data from fifteen [for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Published
2017
Full Text
View/download PDF

47. First clinical results of Minimally Invasive Vector Lumbar Interbody Fusion (MIS-VLIF) in spondylodiscitis and concomitant osteoporosis. Development of the K-template to facilitate the use of MIS-VLIF in degenerative lithesis: implants and biomechanical behavior

Author

Polanski, Witold, Jiang, Hongzhen, Ruess, Daniel, Reinshagen, Clemens, Molcanyi, Marek, Zivcak, Jozef, Tong, Huaiyu, Schackert, Gabriele, and Rieger, Bernhard

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Objective: Dorsal stabilization is used worldwide since 1970. Although there were advancements in detail, the basic principle of the fixateur interne together with transpedicular screw connection is still in exclusive use, but minimal access spinal technologies promoted a diversification of surgical[for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Published
2017

49. Accuracy and reliability of MRI interpretation in patients with CNS lymphoma and glioma

Author

Polanski, Witold H., Kusnick, Georgina, Gerber, Johannes, Schackert, Gabriele, and Sobottka, Stephan B.

Subjects
Lymphoma, ddc: 610, Glioma, 610 Medical sciences, Medicine, MRI
Abstract

Objective: In patients with inoperable brain tumors located in eloquent brain regions histological diagnosis is a prerequisite for the determination of the adjuvant treatment. However, in certain cases brain biopsy may be risky and/or the patient may refuse the procedure and the diagnosis can only[for full text, please go to the a.m. URL], 67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS)

Published
2016

50. Restoration of ankle movements with the ActiGait implantable drop foot stimulator is a safe and reliable treatment option for permanent central leg palsy

Author

Martin, Klaus Daniel, Polanski, Witold, Schulz, Anne-Kathrin, Jöbges, Michael, Hoff, Hansjörg, Schackert, Gabriele, Pinzer, Thomas, and Sobottka, Stephan B.

Subjects
ddc: 610, 610 Medical sciences, Medicine, human activities
Abstract

Background: The ActiGait drop foot stimulator is a promising technique for restoration of lost function by an implantable hybrid stimulation system. It allows an ankle dorsiflexion by active peroneal nerve stimulation during the swing phase of gait. Here, were report the first prospective outcome study[for full text, please go to the a.m. URL], 133. Kongress der Deutschen Gesellschaft für Chirurgie

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results