44 results on '"Czibor S"'
Search Results
2. Optimal timing and criteria of interim PET in DLBCL: a comparative study of 1692 patients
- Author
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Eertink, J.J., Burggraaff, C.N., Heymans, M.W., Dührsen, U., Hüttmann, A., Schmitz, C., Müller, S., Lugtenburg, P.J., Barrington, S.F., Mikhaeel, N.G., Carr, R., Czibor, S., Györke, T., Ceriani, L., Zucca, E., Hutchings, M., Kostakoglu, L., Loft, A., Fanti, S., Wiegers, S.E., Pieplenbosch, S., Boellaard, R., Hoekstra, O.S., Zijlstra, J.M., and de Vet, H.C.W.
- Published
- 2021
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3. Validation of an Artificial Intelligence-Based Prediction Model Using 5 External PET/CT Datasets of Diffuse Large B-Cell Lymphoma.
- Author
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Ferrández MC, Golla SSV, Eertink JJ, Wiegers SE, Zwezerijnen GJC, Heymans MW, Lugtenburg PJ, Kurch L, Hüttmann A, Hanoun C, Dührsen U, Barrington SF, Mikhaeel NG, Ceriani L, Zucca E, Czibor S, Györke T, Chamuleau MED, Zijlstra JM, and Boellaard R
- Abstract
The aim of this study was to validate a previously developed deep learning model in 5 independent clinical trials. The predictive performance of this model was compared with the international prognostic index (IPI) and 2 models incorporating radiomic PET/CT features (clinical PET and PET models). Methods: In total, 1,132 diffuse large B-cell lymphoma patients were included: 296 for training and 836 for external validation. The primary outcome was 2-y time to progression. The deep learning model was trained on maximum-intensity projections from PET/CT scans. The clinical PET model included metabolic tumor volume, maximum distance from the bulkiest lesion to another lesion, SUV
peak , age, and performance status. The PET model included metabolic tumor volume, maximum distance from the bulkiest lesion to another lesion, and SUVpeak Model performance was assessed using the area under the curve (AUC) and Kaplan-Meier curves. Results: The IPI yielded an AUC of 0.60 on all external data. The deep learning model yielded a significantly higher AUC of 0.66 ( P < 0.01). For each individual clinical trial, the model was consistently better than IPI. Radiomic model AUCs remained higher for all clinical trials. The deep learning and clinical PET models showed equivalent performance (AUC, 0.69; P > 0.05). The PET model yielded the highest AUC of all models (AUC, 0.71; P < 0.05). Conclusion: The deep learning model predicted outcome in all trials with a higher performance than IPI and better survival curve separation. This model can predict treatment outcome in diffuse large B-cell lymphoma without tumor delineation but at the cost of a lower prognostic performance than with radiomics., (© 2024 by the Society of Nuclear Medicine and Molecular Imaging.)- Published
- 2024
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4. Volumetric and textural analysis of PET/CT in patients with diffuse large B-cell lymphoma highlights the importance of novel MTVrate feature.
- Author
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Czibor S, Csatlós Z, Fábián K, Piroska M, and Györke T
- Abstract
Objectives: To investigate the prognostic value of clinical, volumetric, and radiomics-based textural parameters in baseline [18F]FDG-PET/CT scans of diffuse large B-cell lymphoma (DLBCL) patients., Methods: We retrospectively investigated baseline PET/CT scans and collected clinical data of fifty DLBCL patients. PET images were segmented semiautomatically to determine metabolic tumor volume (MTV), then the largest segmented lymphoma volume of interest (VOI) was used to extract first-, second-, and high-order textural features. A novel value, MTVrate was introduced as the quotient of the largest lesion's volume and total body MTV. Receiver operating characteristics (ROC) analyses were performed and 24-months progression-free survival (PFS) of low- and high-risk cohorts were compared by log-rank analyses. A machine learning algorithm was used to build a prognostic model from the available clinical, volumetric, and textural data based on logistic regression., Results: The area-under-the-curve (AUC) on ROC analysis was the highest of MTVrate at 0.74, followed by lactate-dehydrogenase, MTV, and skewness, with AUCs of 0.68, 0.63, and 0.55, respectively which parameters were also able to differentiate the PFS. A combined survival analysis including MTV and MTVrate identified a subgroup with particularly low PFS at 38%. In the machine learning-based model had an AUC of 0.83 and the highest relative importance was attributed to three textural features and both MTV and MTVrate as important predictors of PFS., Conclusion: Individual evaluation of different biomarkers yielded only limited prognostic data, whereas a machine learning-based combined analysis had higher effectivity. MTVrate had the highest prognostic ability on individual analysis and, combined with MTV, it identified a patient group with particularly poor prognosis., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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5. Optimal timing and criteria of interim PET in DLBCL:a comparative study of 1692 patients
- Author
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Eertink, Jakoba J., Burggraaff, Coreline N., Heymans, M.W., Duhrsen, U, Huttmann, A, Schmitz, C, Muller, S, Lugtenburg, Elly, Barrington, S. F., Mikhaeel, N. G., Carr, R., Czibor, S., Györke, T., Ceriani, Luca, Zucca, E, Hutchings, M, Kostakoglu, L., Loft, A., Fanti, S., Wiegers, Sanne E., Pieplenbosch, Simone, Boellaard, R, Hoekstra, O.S., Zijlstra, J. M., de Vet, H.C.W., Eertink, Jakoba J., Burggraaff, Coreline N., Heymans, M.W., Duhrsen, U, Huttmann, A, Schmitz, C, Muller, S, Lugtenburg, Elly, Barrington, S. F., Mikhaeel, N. G., Carr, R., Czibor, S., Györke, T., Ceriani, Luca, Zucca, E, Hutchings, M, Kostakoglu, L., Loft, A., Fanti, S., Wiegers, Sanne E., Pieplenbosch, Simone, Boellaard, R, Hoekstra, O.S., Zijlstra, J. M., and de Vet, H.C.W.
- Abstract
Interim 18F-fluorodeoxyglucose positron emission tomography (Interim- 18F-FDG-PET, hereafter I-PET) has the potential to guide treatment of patients with diffuse large B-cell lymphoma (DLBCL) if the prognostic value is known. The aim of this study was to determine the optimal timing and response criteria for evaluating prognosis with I-PET in DLBCL. Individual patient data from 1692 patients with de novo DLBCL were combined and scans were harmonized. I-PET was performed at various time points during treatment with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) therapy. Scans were interpreted using the Deauville score (DS) and change in maximum standardized uptake value (DSUVmax ). Multilevel Cox proportional hazards models corrected for International Prognostic Index (IPI) score were used to study the effects of timing and response criteria on 2-year progression-free survival (PFS). I-PET after 2 cycles (I-PET2) and I-PET4 significantly discriminated good responders from poor responders, with the highest hazard ratios (HRs) for I-PET4. Multivariable HRs for a PET-positive result at I-PET2 and I-PET4 were 1.71 and 2.95 using DS4-5, 4.91 and 6.20 using DS5, and 2.93 and 4.65 using DSUVmax , respectively. DSUVmax identified a larger proportion of poor responders than DS5 did. For all criteria, the negative predictive value was >80%, and positive predictive values ranged from 30% to 70% at I-PET2 and I-PET4. Unlike I-PET1, I-PET3 discriminated good responders from poor responders using DS4-5 and DS5 thresholds (HRs, 2.94 and 4.67, respectively). I-PET2 and I-PET4 predict good response equally during R-CHOP therapy in DLBCL. Optimal timing and response criteria depend on the clinical context. Good response at I-PET2 is suggested for de-escalation trials, and poor response using DSUVmax at I-PET4 is suggested for randomiz
- Published
- 2021
6. Radioembolization Planning With Dual-Isotope Acquisition of 166 Ho-Labeled Microparticles and 99m Tc-Mebrofenin.
- Author
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Czibor S, Bibok A, Horváthy D, Fábián K, and Györke T
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- Male, Humans, Aged, Tomography, Emission-Computed, Single-Photon methods, Yttrium Radioisotopes therapeutic use, Isotopes, Liver Neoplasms diagnostic imaging, Liver Neoplasms radiotherapy, Liver Neoplasms drug therapy, Carcinoma, Hepatocellular diagnostic imaging, Carcinoma, Hepatocellular radiotherapy, Carcinoma, Hepatocellular drug therapy, Embolization, Therapeutic
- Abstract
Abstract: A 76-year-old man with hepatocellular carcinoma was referred for liver radioembolization. Given a prior left hemihepatectomy, it was clinically important to consider potentially irradiated healthy liver at planning. Thus, at the SPECT/CT imaging of the scout dose 166 Ho-microparticles before injected superselectively in the right hepatic artery, 99m Tc-mebrofenin was injected intravenously, and functional volumetry SPECT was performed simultaneously. Based on the 2 image sets, the nonirradiated healthy liver was calculated as 1589 mL (functional liver reserve of 85.5% on 99m Tc-mebrofenin SPECT). Posttreatment dosimetry calculations showed optimal normal tissue and tumor absorbed doses, and the patient is clinically well after 3 months., Competing Interests: Conflicts of interest and sources of funding: none declared., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2023
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7. Preliminary study on individual radiation dose received by medical staff for dose constraint determination.
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Milecz-Mitykó R, Bérczi V, Czibor S, Bánsághi Z, Taba G, Kári B, and Györke T
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- Humans, Extremities, Hospitals, Radiation Dosage, Medical Staff, Lens, Crystalline
- Abstract
The staff of the Radiation Protection Service of a European clinical center measured the radiation dose by type-tested thermoluminescent dosemeter systems to which the medical staff was exposed, to assess the effectiveness of current procedures and equipment for optimalisation prompted by the requirements EU Basic Safety Standard 2013. There were three participating sites, the Site 1 was an external hospital, whereas Sites 2 and 3 are part of the same clinical center, who provided data regarding their personnel, from technologists, nurses and medical doctors. In this preliminary study, only a low number of cases were available and used to establish a new, more realistic yearly dose constraint, namely 6 (from two) mSv for whole-body effective dose, 15 (from two) mSv for eye lens dose and 300 (from 50) mSv for extremity dose. Furthermore, the state of safety culture and protection equipment was assessed. Collection of the sufficient amount of data for statistical evaluation is ongoing., (© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)
- Published
- 2023
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8. Prognostic parameters on baseline and interim [ 18 F]FDG-PET/computed tomography in diffuse large B-cell lymphoma patients.
- Author
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Czibor S, Carr R, Redondo F, Auewarakul CU, Cerci JJ, Paez D, Fanti S, and Györke T
- Subjects
- Humans, Female, Middle Aged, Prognosis, Positron Emission Tomography Computed Tomography, Tomography, X-Ray Computed, Body Weight, Retrospective Studies, Tumor Burden, Fluorodeoxyglucose F18, Lymphoma, Large B-Cell, Diffuse diagnostic imaging
- Abstract
Objective: 2-[ 18 F]fluoro-2-deoxy- d -glucose PET/computed tomography ([ 18 F]FDG-PET/CT) is a widely used imaging method in the management of diffuse large B-cell lymphomas (DLBCL). Our aim was to investigate the prognostic performance of different PET biomarkers in a multicenter setting., Methods: We investigated baseline volumetric values [metabolic tumor volume (MTV) and total lesion glycolysis (TLG), also normalized for body weight] segmented with three different methods [>SUV4 (glob4); 41% isocontour (41pc), and a gradient-based lesion growing algorithm (grad)] and interim parameters [Deauville score, maximal standardized uptake value (ΔSUVmax), modified qPET, and ratio PET (rPET)] alongside clinical parameters (stage, revised International Prognostic Index), using 24-month progression-free survival as the clinical endpoint. Receiver operating characteristics analyses were performed to define optimal cutoff points for the continuous PET parameters., Results: A total of 107 diffuse large B-cell lymphoma patients were included (54 women; mean age: 53.7 years). MTV and TLG calculations showed good correlation among glob4, 41pc, and grad methods; however, optimal cutoff points were markedly different.Significantly different PFS was observed between low- and high-risk groups according to baseline MTV, body weight-adjusted (bwa) MTV, TLG, bwaTLG, as well as interim parameters Deauville score, ΔSUVmax, mqPET, and rPET. Univariate Cox regression analyses showed hazard ratios (HRs) lowest for bwaMTVglob4 (HR = 2.3) and highest for rPET (HR = 9.09). In a multivariate Cox-regression model, rPET was shown to be an independent predictor of PFS ( P = 0.041; HR = 9.15). Combined analysis showed that ΔSUVmax positive patients with high MTV formed a group with distinctly poor PFS (35.3%)., Conclusion: Baseline MTV and TLG values and optimal cutoff points achieved with different segmentation methods varied markedly and showed a limited prognostic impact. Interim PET/CT parameters provided more accurate prognostic information with semiquantitative 'Deauville-like' parameters performing best in the present study., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2023
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9. Oncologic patient with COVID-19 discovered incidentally by PET/CT examination: (A COVID–19-pandémia orvosszakmai kérdései)
- Author
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Czibor S, Kristóf E, Kecskés K, Barra M, Szántó P, Maurovich-Horvat P, and Györke T
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- Aged, COVID-19, Coronavirus Infections epidemiology, Humans, Pandemics, Pneumonia, Viral epidemiology, Positron Emission Tomography Computed Tomography, Coronavirus Infections diagnostic imaging, Incidental Findings, Neoplasms therapy, Pneumonia, Viral diagnostic imaging
- Abstract
The scientific literature of coronavirus-disease 2019 (COVID-19) is rapidly expanding. There is a growing evidence on the discrepancy between clinical symptoms and radiologic findings in many patients. This case report gives details about a patient with only mild symptoms but relatively severe radiological findings. The 75-year-old patient suffering from oncologic disease had a planned a F18-fluoro-deoxy-glucose positron-emission tomography/computer tomography scan with a routine oncological indication where incidental radiomorphologic findings of pneumonia suspect for COVID-19 were detected. After immediate isolation, the patient was transferred to the corresponding medical department, where further investigations verified the diagnosis of COVID-19. With this case, our aim is to raise the awareness for the importance of the instant evaluation of chest computer tomography series when performing planned imaging examination, especially in frail patients. With this practice, potential radiomorphologic findings of pneumonia suspect for COVID-19 could be identified in time, which fundamentally determines further patient management steps. Orv Hetil. 2020; 161(23): 971-976.
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- 2020
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10. Coexistence of aortic valve stenosis and cardiac amyloidosis: echocardiographic and clinical significance.
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Peskó G, Jenei Z, Varga G, Apor A, Vágó H, Czibor S, Prohászka Z, Masszi T, and Pozsonyi Z
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- Aged, Echocardiography, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Retrospective Studies, Amyloidosis diagnostic imaging, Aortic Valve Stenosis diagnostic imaging, Cardiomyopathies diagnostic imaging
- Abstract
Background: Left ventricular hypertrophy and diastolic dysfunction are common echocardiographic features of both aortic valve stenosis (AS) and cardiac amyloidosis (CA). These two different entities therefore may mask each other. From recent years, there is a growing body of evidence about the relatively high incidence of wild-type transthyretin (wtTTR) amyloidosis in AS, but there are scarce data on the prevalence of AS in CA, particularly in AL-type amyloidosis. The echocardiographic approach to these patients is not obvious, and not evidence based. We aimed to study the prevalence, severity, and type of AS in patients with CA and also to evaluate the potential of echocardiography in the diagnostic process., Methods: Between January 2009 and January 2019, we retrospectively analyzed the clinical and echocardiographic data, and the echocardiographic work up of 55 consecutive CA patients., Results: 80% of our CA patients had AL amyloidosis. We identified 5 patients (9%) with moderate to severe AS: two with moderate AS and three with low-flow, low-grade AS (LFLG AS). Further analysis of the latter three patients with dobutamine stress echocardiography revealed pseudo-severe LFLG AS in two, and true-severe AS in one patient., Conclusion: The prevalence of moderate to severe AS is 9% in our population of CA patients, the majority of whom have AL amyloidosis. Dobutamine echocardiography seems to be appropriate for the further characterization of patients with LFLG AS, even with normal ejection fraction.
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- 2019
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11. Lung imaging methods: indications, strengths and limitations.
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László Tárnoki, Dávid, Karlinger, Kinga, Ridge, Carole A., Kiss, Fanni Júlia, Györke, Tamás, Grabczak, Elżbieta Magdalena, and Domonkos Tárnoki, Ádám
- Published
- 2024
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12. Az infektív endocarditis epidemiológiája és időbeli változása 2006 és 2018 között egy tercier centrumban.
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Bence, András, Dénes, Mónika, Ferenci, Tamás, Borbás, Sarolta, and Andréka, Péter
- Abstract
Copyright of Hungarian Medical Journal / Orvosi Hetilap is the property of Akademiai Kiado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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13. Myocardial Mechanics and Valvular and Vascular Abnormalities in Cardiac Amyloidosis.
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Nemes, Attila
- Subjects
CARDIAC amyloidosis ,VASCULAR remodeling ,CARDIAC patients ,AMYLOID ,HUMAN abnormalities - Abstract
Cardiac amyloidosis is an infiltrative disease primarily caused by extracellular tissue deposition of amyloid fibrils in the myocardial interstitium. The aim of the present review was to summarize findings regarding changes in myocardial mechanics, valvular abnormalities, and vascular remodeling detected in patients with cardiac amyloidosis. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Unraveling the Enigma of Moderate Aortic Stenosis: Challenges and Future Prospects.
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Santangelo, Gloria, Tumminello, Gabriele, Barbieri, Lucia, Mallardi, Giulio Pio Federico, Faggiano, Andrea, Moscardelli, Silvia, Rossi, Andrea, Cozza, Fabiana, Carugo, Stefano, and Faggiano, Pompilio
- Subjects
AORTIC stenosis ,AORTIC valve transplantation ,LEFT ventricular dysfunction ,VENTRICULAR remodeling ,DIAGNOSTIC imaging - Abstract
According to current guidelines, only clinical surveillance is recommended for patients with moderate aortic valve stenosis (AS), while aortic valve replacement may be considered in patients undergoing surgery for other indications. Recent studies have shown that moderate AS is associated with a high risk of adverse cardiovascular events, including death, especially in patients with left ventricular dysfunction. In this context, multimodality imaging can help to improve the accuracy of moderate AS diagnosis and to assess left ventricular remodeling response. This review discusses the natural history of this valve disease and the role of multimodality imaging in the diagnostic process, summarizes current evidence on the medical and non-medical management, and highlights ongoing trials on valve replacement. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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15. Egy férfi nem sír.
- Author
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Ernő, Taxner-Tóth
- Published
- 2024
16. Valvular heart disease in patients with cardiac amyloidosis.
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Aimo, Alberto, Camerini, Lara, Fabiani, Iacopo, Morfino, Paolo, Panichella, Giorgia, Barison, Andrea, Pucci, Angela, Castiglione, Vincenzo, Vergaro, Giuseppe, Sinagra, Gianfranco, and Emdin, Michele
- Subjects
HEART valve diseases ,CARDIAC patients ,CARDIAC amyloidosis ,IMMUNOGLOBULIN light chains ,HEART valve prosthesis implantation - Abstract
Cardiac amyloidosis (CA) is an underdiagnosed condition caused by the deposition of misfolded proteins, namely immunoglobulin light chains and transthyretin, in the extracellular spaces of the heart. Any cardiovascular structure can be affected by amyloid infiltration, including the valves. Amyloid accumulation within the cardiac valves may lead to their structural and functional impairment, with a profound impact on patients' prognosis and quality of life. The most common forms of valvular disease in CA are aortic stenosis (AS), mitral regurgitation (MR), and tricuspid regurgitation (TR). CA and AS share similar risk factors, disease mechanisms, and remodeling patterns, which make their diagnosis particularly challenging. Patients with both CA and AS experience worse outcomes than CA or AS alone, and transcatheter aortic valve replacement may represent a useful therapeutic strategy in this population. Data on MR and TR are quite limited and mainly coming from case reports or small series. This review paper will summarize our current understanding on the epidemiology, disease mechanisms, echocardiographic features, clinical implications, and therapeutic options of AS, MR, and TR in patients with CA. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Advance of echocardiography in cardiac amyloidosis.
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Liang, Shichu, Liu, Zhiyue, Li, Qian, He, Wenfeng, and Huang, He
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CARDIAC amyloidosis ,ECHOCARDIOGRAPHY ,PROTEIN precursors ,SYMPTOMS ,CARDIAC imaging ,HEART failure - Abstract
Cardiac amyloidosis (CA) occurs when the insoluble fibrils formed by misfolded precursor proteins deposit in cardiac tissues. The early clinical manifestations of CA are not evident, but it is easy to progress to refractory heart failure with an inferior prognosis. Echocardiography is the most commonly adopted non-invasive modality of imaging to visualize cardiac structures and functions, and the preferred modality in the evaluation of patients with cardiac symptoms and suspected CA, which plays a vital role in the diagnosis, prognosis, and long-term management of CA. The present review summarizes the echocardiographic manifestations of CA, new echocardiographic techniques, and the application of multi-parametric echocardiographic models in CA diagnosis. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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18. Optimal timing and criteria of interim PET in DLBCL: A comparative study of 1692 patients
- Author
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Sanne E Wiegers, Stefan P. Müller, N. G. Mikhaeel, Robert Carr, Luca Ceriani, Annika Loft, Tamás Györke, Martin Hutchings, Jakoba J Eertink, Pieternella J. Lugtenburg, Emanuele Zucca, Ulrich Dührsen, Ronald Boellaard, Christine Schmitz, Simone Pieplenbosch, Andreas Hüttmann, H.C.W. de Vet, Sally F. Barrington, S. Czibor, J. M. Zijlstra, L. Kostakoglu, Coreline N. Burggraaff, Otto S. Hoekstra, Stefano Fanti, Martijn W. Heymans, Eertink JJ, Burggraaff CN, Heymans MW, Dührsen U, Hüttmann A, Schmitz C, Müller S, Lugtenburg PJ, Barrington SF, Mikhaeel NG, Carr R, Czibor S, Györke T, Ceriani L, Zucca E, Hutchings M, Kostakoglu L, Loft A, Fanti S, Wiegers SE, Pieplenbosch S, Boellaard R, Hoekstra OS, Zijlstra JM, de Vet HCW., Hematology, VU University medical center, Internal medicine, Epidemiology and Data Science, APH - Methodology, APH - Personalized Medicine, Radiology and nuclear medicine, Amsterdam Neuroscience - Brain Imaging, CCA - Imaging and biomarkers, and CCA - Cancer Treatment and quality of life
- Subjects
Oncology ,medicine.medical_specialty ,Medizin ,Context (language use) ,Standardized uptake value ,DLBCL, interim PET ,030218 nuclear medicine & medical imaging ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,International Prognostic Index ,Randomized controlled trial ,Fluorodeoxyglucose F18 ,law ,Prednisone ,Internal medicine ,Humans ,Medicine ,Lymphoid Neoplasia ,business.industry ,Proportional hazards model ,Hazard ratio ,Hematology ,Prognosis ,Vincristine ,Positron-Emission Tomography ,030220 oncology & carcinogenesis ,Rituximab ,Lymphoma, Large B-Cell, Diffuse ,business ,medicine.drug - Abstract
Interim 18F-fluorodeoxyglucose positron emission tomography (Interim- 18F-FDG-PET,hereafter I-PET) has the potential to guide treatment of patients with diffuse large B-celllymphoma (DLBCL) if the prognostic value is known. The aim of this study was to determinethe optimal timing and response criteria for evaluating prognosis with I-PET in DLBCL.Individual patient data from 1692 patients with de novo DLBCL were combined and scans were harmonized. I-PET was performed at various time points during treatment with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) therapy. Scans were interpreted using the Deauville score (DS) and change in maximum standardized uptake value (DSUVmax ). Multilevel Cox proportional hazards models corrected for International Prognostic Index (IPI) score were used to study the effects oftiming and response criteria on 2-year progression-free survival (PFS). I-PET after 2 cycles (I-PET2) and I-PET4 significantly discriminated good responders from poor responders, with the highest hazard ratios (HRs) for I-PET4. Multivariable HRs for a PET-positive result at I-PET2 and I-PET4 were 1.71 and 2.95 using DS4-5, 4.91 and 6.20 using DS5, and 2.93 and 4.65 using DSUVmax , respectively. DSUVmax identified a larger proportion of poor respondersthan DS5 did. For all criteria, the negative predictive value was >80%, and positivepredictive values ranged from 30% to 70% at I-PET2 and I-PET4. Unlike I-PET1, I-PET3discriminated good responders from poor responders using DS4-5 and DS5 thresholds (HRs,2.94 and 4.67, respectively). I-PET2 and I-PET4 predict good response equally during R-CHOPtherapy in DLBCL. Optimal timing and response criteria depend on the clinical context. Goodresponse at I-PET2 is suggested for de-escalation trials, and poor response using DSUVmax atI-PET4 is suggested for randomized trials that are evaluating new therapies
- Published
- 2021
19. Direct comparison of diagnostic and clinical values between Tc-99 m DPD and Tc-99 m PYP scintigraphy in patients with cardiac amyloidosis.
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Park, Yong-Jin, Lee, Joohee, Kim, Darae, Choi, Jin-Oh, Kim, Seok Jin, Kim, Kihyun, and Choi, Joon Young
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CARDIAC amyloidosis ,RADIONUCLIDE imaging ,CARDIAC patients ,BRAIN natriuretic factor ,GLOMERULAR filtration rate - Abstract
Background: Technetium-99 m 3,3-diphosphono-1,2-propanodicarboxylic acid (DPD) and technetium-99 m sodium pyrophosphate (PYP) are the two most commonly used radiotracers for cardiac amyloidosis (CA), but no studies have directly compared them. Therefore, in this study, we directly compared the diagnostic and clinical utility of DPD and PYP scintigraphy in patients with CA. Methods: Ten patients with CA were enrolled. Eight clinical variables and 12 scintigraphic parameters were used. Clinical variables were age, sex, estimated glomerular filtration rate (eGFR), N-terminal pro brain natriuretic peptide (NT-proBNP), and the results of electromyography (EMG), a sensory test, electrocardiogram, and echocardiography (EchoCG). Four heart retention ratios (heart/whole-body profile, heart/pelvis, heart/skull, and heart/contralateral lung) were calculated from the DPD and PYP scans and two visual scoring systems (Perugini and Dorbala systems) were used. Comparative analyses were performed between radiotracers and between visual scoring systems using clinical variables and scintigraphic parameters. Results: Twenty DPD parameters and nine PYP parameters had significant associations with age, eGFR, NT-proBNP, EchoCG, and EMG. DPD parameters had more frequent significant associations with clinical variables than PYP parameters. Compared to visual scores in the DPD scan, the proportion of patients with higher visual scores in the PYP scan was relatively greater than those with lower visual scores, and there were more patients with a visual score of 2 or higher in PYP scans than DPD scans. Conclusions: DPD scintigraphy may reflect the disease severity of CA better than PYP scintigraphy, whereas PYP scintigraphy may be a more sensitive imaging modality for identifying CA involvement. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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20. ECIO 2023 Book of Abstracts.
- Published
- 2023
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21. Examining the effect of feedback type and gender on computing achievements, engagement, flipped learning readiness, and autonomous learning in online flipped classroom.
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Polat, Elif, Hopcan, Sinan, Albayrak, Ebru, and Yildiz Durak, Hatice
- Subjects
LEARNING readiness ,FLIPPED classrooms ,ONLINE education ,PSYCHOLOGICAL feedback ,PRE-tests & post-tests ,GENDER - Abstract
The purpose of this study was to examine how the flipped learning readiness, engagement, autonomous learning, and computing achievements of university students in an online flipped classroom differ according to gender and feedback groups (verbal, written, and grade reporting) before and after a computing course. An 8‐week application was conducted with 104 university students enrolled Computing course at a state university, İstanbul, Turkey. Students were randomly assigned to three different feedback groups. An experimental design was used in this study and quantitative data was collected. Students did homework and written/verbal or grade feedback was given to students through Moodle. A flipped learning readiness scale, computing achievement test, online student engagement scale, and autonomous learning scale were given to participants as pretests and posttests. The results showed that computing academic achievement, flipped learning readiness, and engagement variables increased significantly. There were differences in online engagement regarding gender but no difference between feedback types. The research includes suggestions for future studies. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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22. Echocardiographic predictors of presence of cardiac amyloidosis in aortic stenosis.
- Author
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Jaiswal, Vikash, Ang, Song Peng, Chia, Jia Ee, Abdelazem, Eman Muhammad, Jaiswal, Akash, Biswas, Monodeep, Gimelli, Alessia, Parwani, Purvi, Siller-Matula, Jolanta M, and Mamas, Mamas A
- Subjects
ECHOCARDIOGRAPHY ,CARDIAC amyloidosis ,LEFT heart ventricle ,META-analysis ,SYSTEMATIC reviews ,AORTIC stenosis ,HEART ventricles ,STROKE volume (Cardiac output) ,COMORBIDITY ,LEFT heart atrium - Abstract
Aims Aortic stenosis (AS) and cardiac amyloidosis (CA) frequently coexist but the diagnosis of CA in AS patients remains a diagnostic challenge. We aim to evaluate the echocardiographic parameters that may aid in the detection of the presence of CA in AS patients. Method and results We performed a systematic literature search of electronic databases for peer-reviewed articles from inception until 10 January 2022. Of the 1449 patients included, 160 patients had both AS–CA whereas the remaining 1289 patients had AS-only. The result of our meta-analyses showed that interventricular septal thickness [standardized mean difference (SMD): 0.74, 95% CI: 0.36–1.12, P = 0.0001), relative wall thickness (SMD: 0.74, 95% CI: 0.17–1.30, P < 0.0001), posterior wall thickness (SMD: 0.74, 95% CI 0.51 to 0.97, P = 0.0011), LV mass index (SMD: 1.62, 95% CI: 0.63–2.62, P = 0.0014), E/A ratio (SMD: 4.18, 95% CI: 1.91–6.46, P = 0.0003), and LA dimension (SMD: 0.73, 95% CI: 0.43–1.02, P < 0.0001)] were found to be significantly higher in patients with AS–CA as compared with AS-only patients. In contrast, myocardial contraction fraction (SMD: −2.88, 95% CI: −5.70 to −0.06, P = 0.045), average mitral annular S′ (SMD: −1.14, 95% CI: −1.86 to −0.43, P = 0.0017), tricuspid annular plane systolic excursion (SMD: −0.36, 95% CI: −0.62 to −0.09, P = 0.0081), and tricuspid annular S′ (SMD: −0.77, 95% CI: −1.13 to −0.42, P < 0.0001) were found to be significantly lower in AS–CA patients. Conclusion Parameters based on echocardiography showed great promise in detecting CA in patients with AS. Further studies should explore the optimal cut-offs for these echocardiographic variables for better diagnostic accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
23. Onkológiai beteg tervezett PET/CT vizsgálata során véletlenszerűen felfedezett COVID–19-betegség.: (A COVID–19-pandémia orvosszakmai kérdései).
- Author
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Czibor, Sándor, Kristóf, Emese, Kecskés, Kinga, Barra, Magdolna, Szántó, Péter, Maurovich-Horvat, Pál, and Györke, Tamás
- Abstract
Copyright of Hungarian Medical Journal / Orvosi Hetilap is the property of Akademiai Kiado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
24. Modeling of Hybrid Autonomous Vehicle Fuel Consumption.
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Zsombók, Imre and Zöldy, Máté
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AUTONOMOUS vehicles ,ENERGY consumption ,HYBRID electric vehicles ,VEHICLE design & construction ,AUTOMOBILE drivers - Published
- 2020
- Full Text
- View/download PDF
25. Onkológiai beteg tervezett PET/CT vizsgálata során véletlenszerűen felfedezett COVID-19-betegség.
- Author
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Sándor, Czibor, Emese, Kristóf, Kinga, Kecskés, Magdolna, Barra, Péter, Szántó, Pál, Maurovich-Horvat, and Tamás, Györke
- Abstract
Copyright of Hungarian Medical Journal / Orvosi Hetilap is the property of Akademiai Kiado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
26. Az orvosi képalkotás szerepe az új koronavírus-pandémiában.
- Author
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Balázs, Futácsi, Bence, Fejér, and Pál, Maurovich-Horvat
- Abstract
Copyright of Orvosképzés is the property of Semmelweis Kiado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
27. Annual Congress of the European Association of Nuclear Medicine October 12 – 16, 2019 Barcelona, Spain.
- Subjects
NUCLEAR medicine ,RADIONUCLIDE imaging - Abstract
Is to design personalised, super-selective therapies and to identify more precise means of monitoring response to treatment in routine The now well-established tracks M2M - Molecule to Man (basic and translational science) and Do.MoRe (radionuclide therapy and dosimetry) promise to promote high-quality research through interaction between basic and translational clinical Scientists and to present the latest achievements and developments in the fields of clinical molecular imaging and nuclear medicine therapy. Radiobiology and Dosimetry for Radioembolisation Therapy Problems Related to Dosimetry for Therapy Based on. [Extracted from the article]
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- 2019
- Full Text
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28. Annual Congress of the European Association of Nuclear Medicine October 13 - 17, 2018 Düsseldorf, Germany.
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NUCLEAR medicine ,CLINICAL trials ,RADIOTHERAPY ,HEART metabolism - Abstract
The article discusses a meeting on nuclear medicine and molecular imaging by the European Association of Nuclear Medicine that was held at Dusseldorf, Germany from 13th to 17th October which talks about medical education, multi-modality imaging, radio pharmaceuticals and clinical trials. It talks about bone response, radio therapy, radiation oncology, hypoxia imaging, myocardial metabolic imaging and clinical perspective of myocardial sarcoidosis.
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- 2018
- Full Text
- View/download PDF
29. EANM'17.
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NUCLEAR medicine ,CONFERENCES & conventions ,NUCLEAR science ,SOCIETIES - Abstract
The article offers information on the Annual Congress of the European Association of Nuclear Medicine, to be held on October 21-25, 2017 in Vienna, Austria.
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- 2017
- Full Text
- View/download PDF
30. Author Index.
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AUTHORS ,NUCLEAR medicine - Abstract
An author index for the Volume 40, Supplement 2, 2013 issue of the "European of Nuclear Medicine and Molecular Imaging" is presented.
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- 2013
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31. Author Index.
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PERIODICAL indexes ,AUTHORS - Abstract
An author index for the 2012 issue of the "European Journal of Nuclear Medicine & Molecular Imaging," is presented.
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- 2012
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32. Aortic Valve Stenosis and Cardiac Amyloidosis: A Misleading Association.
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Bonelli, Andrea, Paris, Sara, Nardi, Matilde, Henein, Michael Y., Agricola, Eustachio, Troise, Giovanni, and Faggiano, Pompilio
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AORTIC stenosis ,RADIONUCLIDE imaging ,HEART valves ,CARDIAC amyloidosis ,MEDICAL personnel ,OLDER people - Abstract
The association between aortic stenosis (AS) and cardiac amyloidosis (CA) is more frequent than expected. Albeit rare, CA, particularly the transthyretin (ATTR) form, is commonly found in elderly people. ATTR-CA is also the most prevalent form in patients with AS. These conditions share pathophysiological, clinical and imaging findings, making the diagnostic process very challenging. To date, a multiparametric evaluation is suggested in order to detect patients with both AS and CA and choose the best therapeutic option. Given the accuracy of modern non-invasive techniques (i.e., bone scintigraphy), early diagnosis of CA is possible. Flow-charts with the main CA findings which may help clinicians in the diagnostic process have been proposed. The prognostic impact of the combination of AS and CA is not fully known; however, new available specific treatments of ATTR-CA have changed the natural history of the disease and have some impact on the decision-making process for the management of AS. Hence the relevance of detecting these two conditions when simultaneously present. The specific features helping the detection of AS-CA association are discussed in this review, focusing on the shared pathophysiological characteristics and the common clinical and imaging hallmarks. [ABSTRACT FROM AUTHOR]
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- 2021
- Full Text
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33. Integrative Multi-Omics Analysis in Calcific Aortic Valve Disease Reveals a Link to the Formation of Amyloid-Like Deposits.
- Author
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Heuschkel, Marina A., Skenteris, Nikolaos T., Hutcheson, Joshua D., van der Valk, Dewy D., Bremer, Juliane, Goody, Philip, Hjortnaes, Jesper, Jansen, Felix, Bouten, Carlijn V.C., van den Bogaerdt, Antoon, Matic, Ljubica, Marx, Nikolaus, and Goettsch, Claudia
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AORTIC valve diseases ,HEART valve diseases ,AMYLOID beta-protein precursor ,TRANSFORMING growth factors ,CARRIER proteins ,TRYPSIN ,TRANSCRIPTION factors ,AMYLOID beta-protein - Abstract
Calcific aortic valve disease (CAVD) is the most prevalent valvular heart disease in the developed world, yet no pharmacological therapy exists. Here, we hypothesize that the integration of multiple omic data represents an approach towards unveiling novel molecular networks in CAVD. Databases were searched for CAVD omic studies. Differentially expressed molecules from calcified and control samples were retrieved, identifying 32 micro RNAs (miRNA), 596 mRNAs and 80 proteins. Over-representation pathway analysis revealed platelet degranulation and complement/coagulation cascade as dysregulated pathways. Multi-omics integration of overlapping proteome/transcriptome molecules, with the miRNAs, identified a CAVD protein–protein interaction network containing seven seed genes (apolipoprotein A1 (APOA1), hemoglobin subunit β (HBB), transferrin (TF), α-2-macroglobulin (A2M), transforming growth factor β-induced protein (TGFBI), serpin family A member 1 (SERPINA1), lipopolysaccharide binding protein (LBP), inter-α-trypsin inhibitor heavy chain 3 (ITIH3) and immunoglobulin κ constant (IGKC)), four input miRNAs (miR-335-5p, miR-3663-3p, miR-21-5p, miR-93-5p) and two connector genes (amyloid beta precursor protein (APP) and transthyretin (TTR)). In a metabolite–gene–disease network, Alzheimer's disease exhibited the highest degree of betweenness. To further strengthen the associations based on the multi-omics approach, we validated the presence of APP and TTR in calcified valves from CAVD patients by immunohistochemistry. Our study suggests a novel molecular CAVD network potentially linked to the formation of amyloid-like structures. Further investigations on the associated mechanisms and therapeutic potential of targeting amyloid-like deposits in CAVD may offer significant health benefits. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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34. EANM’24 Abstract Book Congress Oct 19-23, 2024
- Published
- 2024
- Full Text
- View/download PDF
35. CIRSE 2024 Book of Abstracts
- Published
- 2024
- Full Text
- View/download PDF
36. Survival prediction in diffuse large B-cell lymphoma patients: multimodal PET/CT deep features radiomic model utilizing automated machine learning
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Chen, Jianxin, Lin, Fengyi, Dai, Zhaoyan, Chen, Yu, Fan, Yawen, Li, Ang, and Zhao, Chenyu
- Published
- 2024
- Full Text
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37. ECIO 2024 Book of Abstracts
- Published
- 2024
- Full Text
- View/download PDF
38. EANM’23 Abstract Book Congress Sep 9-13, 2023
- Published
- 2023
- Full Text
- View/download PDF
39. Nuclear Medicine and Molecular Imaging
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- Nuclear medicine, Diagnostic imaging, Molecular diagnosis
- Abstract
Nuclear Medicine and Molecular Imaging offers complete coverage of this exciting and key area of biomedicine, seamlessly fusing the science behind nuclear medicine with the clinical aspects of diagnostic imaging. Beginning with sections on the physics related to nuclear medicine, radiation biology/safety, and instrumentation/quality control, it then covers radiochemistry and the development of new radionuclide therapy/tracers, and basic techniques such as positron emission tomography (PET) and single photon emission computed tomography (SPECT). The focus then shifts to the clinical aspects, with sections on clinical/preclinical nuclear imaging (structured via organ system such as gastrointestinal, cardiovascular, pulmonary, etc.), as well as other in vivo molecular imaging techniques such as optical imaging, digital image analysis (radiomics), as well as the increasing use of artificial intelligence (AI) in diagnostics. No other publication provides such a complete overview of the field, with most choosing to focus either on physics or imaging. In most cases, preclinical/experimental imaging is treated separately from clinical imaging. Nuclear Medicine and Molecular Imaging brings it all together into a complete, 4-volume, foundational resource for researchers and medical professionals specializing in this exciting area. - Provides a'one-stop'resource on all aspects of Nuclear Medicine and Molecular Imaging, including both preclinical and clinical aspects, physics and applications - Presents concise, authoritative chapters expertly authored - Includes high quality, full color images and videos, as well as interactive multimedia features
- Published
- 2022
40. ECIO 2023 Book of Abstracts
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- 2023
- Full Text
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41. TRANSBALTICA XI: Transportation Science and Technology : Proceedings of the International Conference TRANSBALTICA, May 2-3, 2019, Vilnius, Lithuania
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Kasthurirangan Gopalakrishnan, Olegas Prentkovskis, Irina Jackiva, Raimundas Junevičius, Kasthurirangan Gopalakrishnan, Olegas Prentkovskis, Irina Jackiva, and Raimundas Junevičius
- Subjects
- Transportation engineering, Traffic engineering, Cooperating objects (Computer systems), Security systems, Technological innovations
- Abstract
This book gathers papers presented at the 11th international scientific conference'Transbaltica: Transportation Science and Technology', held on May 2-3, 2019 at Vilnius Gediminas Technical University, Lithuania. It covers cutting-edge issues concerning research and development of modern transport systems. The chapters, written by an international group of experts, discuss novel and smart solutions in the area of vehicle engineering, including environmentally friendly technologies, topics relating to traffic safety, modeling and control, and solutions and challenges in modern logistics. Further topics include multimodal transport and vehicle automation. Providing comprehensive information and ideas concerning innovative transportation technologies and challenges, this book offers a valuable resource for transportation researchers and practitioners, including engineers, managers and decision-makers in the field.
- Published
- 2020
42. Annual Congress of the European Association of Nuclear Medicine October 15-19, 2022 Barcelona, Spain
- Published
- 2022
- Full Text
- View/download PDF
43. European Association of Nuclear Medicine October 22 – 30, 2020 Virtual
- Published
- 2020
- Full Text
- View/download PDF
44. EANM Abstracts 2013
- Published
- 2013
- Full Text
- View/download PDF
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