Clinical Neuroradiology最新文献

{"title":"7 T Versus 3 T in the Diagnosis of Small Unruptured Intracranial Aneurysms: Reply to Radojewski et al.","authors":"Yash Verma, Sairam Ramesh, Arosh S Perera Molligoda Arachchige","doi":"10.1007/s00062-023-01321-y","DOIUrl":"10.1007/s00062-023-01321-y","url":null,"abstract":"","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"51-52"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9634120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply: Diagnosis of Small Unruptured Intracranial Aneurysms: Comparison of 7 T Versus 3 T MRI.","authors":"P Radojewski, T Dobrocky, M Branca, W Almiri, M Correia, A Raabe, D Bervini, J Gralla, R Wiest, P Mordasini","doi":"10.1007/s00062-023-01322-x","DOIUrl":"10.1007/s00062-023-01322-x","url":null,"abstract":"","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"53-54"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9677233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Safety Aspects and Procedural Characteristics of Ambulatory Diagnostic Cerebral Catheter Angiography.","authors":"Lars Behrens, Andreas Adam, Anna Rubeck, Stefan Schiele, Gernot Müller, Yalda Abrishami, Ansgar Berlis, Christoph J Maurer","doi":"10.1007/s00062-023-01345-4","DOIUrl":"10.1007/s00062-023-01345-4","url":null,"abstract":"<p><strong>Purpose: </strong>Diagnostic cerebral catheter angiography is used to assess a variety of neurovascular pathologies especially in patients before and after endovascular neurointerventional treatment. In many centers diagnostic cerebral angiographies are performed with the patient staying for one night in the hospital because there are not yet sufficient data on the safety of ambulatory cerebral angiography. At the same time hospitals face a growing demand to perform ambulatory medical procedures.</p><p><strong>Methods: </strong>A total of 426 ambulatory diagnostic cerebral angiographies were retrospectively analyzed. Technical details of the angiographies were analyzed to identify procedural risk factors.</p><p><strong>Results: </strong>Out of 426 patients 14 (3.3%) had some form of complication, 3 developed minor transient neurological symptoms, 1 patient developed Quincke's edema probably as an adverse reaction to contrast agent, 1 patient had an asymptomatic carotid dissection and 1 had a fall of unknown etiology. Of the 14 complications 8 were puncture site complications with 1 re-bleeding, 1 dissection, and 6 minor complications, 421 punctures were femoral, 3 radial and 2 brachial. Out of 333 patients with magnetic resonance imaging (MRI) after angiography 21 showed focal diffusion-weighted imaging (DWI) lesions but none of these lesions were symptomatic. The rate of DWI lesions was significantly higher in selectively angiography territories than in other territories. The use of a Simmons 2 catheter significantly increased the rate of DWI lesions (p = 0.047), whereas 3D rotational angiography did not (p = 0.55). The rate of DWI lesions per selectively accessed vessel was 4.6% with a higher rate in the anterior than in the posterior circulation.</p><p><strong>Conclusion: </strong>Diagnostic cerebral catheter angiography can be safely performed in an ambulatory setting.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"155-162"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881604/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10298702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Bridging Thrombolysis on the Efficacy of Stent Retriever Thrombectomy Techniques : Insights from the SWIFT-DIRECT trial.","authors":"Raoul Pop, Silja Räty, Roberto Riva, Gaultier Marnat, Tomas Dobrocky, Pierre Louis Alexandre, Margaux Lefebvre, Jean Francois Albucher, Marion Boulanger, Federico Di Maria, Sébastien Richard, Sébastien Soize, Eike Immo Piechowiak, Jan Liman, Arno Reich, Marc Ribo, Thomas Meinel, Anastasios Mpotsaris, David S Liebeskind, Jan Gralla, Urs Fischer, Johannes Kaesmacher","doi":"10.1007/s00062-023-01340-9","DOIUrl":"10.1007/s00062-023-01340-9","url":null,"abstract":"<p><strong>Background: </strong>There are little available data regarding the influence of intravenous thrombolysis (IVT) on the efficacy of different first line endovascular treatment (EVT) techniques.</p><p><strong>Methods: </strong>We used the dataset of the SWIFT-DIRECT trial which randomized 408 patients to IVT + EVT or EVT alone at 48 international sites. The protocol required the use of a stent retriever (SR), but concomitant use of a balloon guide catheter (BGC) and/or distal aspiration (DA) catheter was left to the discretion of the operators. Four first line techniques were applied in the study population: SR, SR + BGC, SR + DA, SR + DA + BGC. To assess whether the effect of allocation to IVT + EVT versus EVT alone was modified by the first line technique, interaction models were fitted for predefined outcomes. The primary outcome was first pass mTICI 2c‑3 reperfusion (FPR).</p><p><strong>Results: </strong>This study included 385 patients of whom 172 were treated with SR + DA, 121 with SR + DA + BGC, 57 with SR + BGC and 35 with SR. There was no evidence that the effect of IVT + EVT versus EVT alone would be modified by the choice of first line technique; however, allocation to IVT + EVT increased the odds of FPR by a factor of 1.68 (95% confidence interval, CI 1.11-2.54).</p><p><strong>Conclusion: </strong>This post hoc analysis does not suggest treatment effect heterogeneity of IVT + EVT vs EVT alone in different stent retriever techniques but provides evidence for increased FPR if bridging IVT is administered before stent retriever thrombectomy.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"93-103"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10113704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability of High-resolution Gadolinium-enhanced MR Cisternography and Gasket-seal Technique for Management of Anterior Skull Base Defects.","authors":"Mukesch Johannes Shah, Jürgen Beck, Stephan Meckel, Horst Urbach, Ikram Eda Duman, Manuel Christoph Ketterer, Tanja Hildenbrand","doi":"10.1007/s00062-023-01339-2","DOIUrl":"10.1007/s00062-023-01339-2","url":null,"abstract":"<p><strong>Purpose: </strong>Precise preoperative localization of anterior skull base defects is important to plan surgical access, increase the success rate and reduce complications. A stable closure of the defect is vital to prevent recurrence of cerebrospinal fluid (CSF) rhinorrhea. The purpose of this retrospective case series was to evaluate the reliability of a new high-resolution gadolinium-enhanced compressed-sensing SPACE technique (CS T1 SPACE) for magnetic resonance (MR) cisternography to detect cerebrospinal fluid leaks of the anterior skull base and to assess the long-term success rate of the gasket-seal technique for closure of skull base defects.</p><p><strong>Method: </strong>All patients with spontaneous or postoperative cerebrospinal fluid rhinorrhea and defects of the anterior skull base presenting to the Departments of Otorhinolaryngology and Neurosurgery between 2019 and 2020, receiving a computed tomography (CT) cisternography and MR cisternography (on a 3T whole-body MR scanner using a 64-channel head and neck coil) with CS T1 SPACE sequence and closure of the defect with the gasket-seal technique, were enrolled in the study. For the cisternography, iodinated contrast agent (15 ml Solutrast 250 M®), saline (4 mL) mixed with a 0.5 mL of gadoteridol was injected into the lumbar subarachnoid space.</p><p><strong>Results: </strong>A total of four patients were included in the study and MR cisternography with CS T1 SPACE sequence was able to precisely localize CSF leaks in all patients. The imaging results correlated with intraoperative findings. All defects could be successfully closed with the gasket-seal technique. The mean follow-up was 35.25 months (range 33-37 months).</p><p><strong>Conclusion: </strong>MR cisternography with CS T1 SPACE sequence could be a promising technique for precise localization of CSF leaks and the gasket-seal technique resulted in good closure of the CSF fistula in this case series.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"115-123"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10130484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Freiburg Neuropathology Case Conference: : 68-Year-Old Patient with Slurred Speech, Double Vision, and Increasing Gait Disturbance.","authors":"C Zander, M Diebold, M J Shah, B Malzkorn, M Prinz, H Urbach, D Erny, C A Taschner","doi":"10.1007/s00062-024-01385-4","DOIUrl":"10.1007/s00062-024-01385-4","url":null,"abstract":"","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"279-286"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881640/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139721896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of Small Fiber Function with Microvascular Perfusion of Peripheral Nerves in Patients with Type 2 Diabetes : Study using Quantitative Sensory Testing and Magnetic Resonance Neurography.","authors":"Christoph M Mooshage, Lukas Schimpfle, Zoltan Kender, Dimitrios Tsilingiris, Taraneh Aziz-Safaie, Anja Hohmann, Julia Szendroedi, Peter Nawroth, Volker Sturm, Sabine Heiland, Martin Bendszus, Stefan Kopf, Felix T Kurz, Johann M E Jende","doi":"10.1007/s00062-023-01328-5","DOIUrl":"10.1007/s00062-023-01328-5","url":null,"abstract":"<p><strong>Introduction/aims: </strong>Diabetic small fiber neuropathy (SFN) is caused by damage to thinly myelinated A‑fibers (δ) and unmyelinated C‑fibers. This study aimed to assess associations between quantitative sensory testing (QST) and parameters of peripheral nerve perfusion obtained from dynamic contrast enhanced (DCE) magnetic resonance neurography (MRN) in type 2 diabetes patients with and without SFN.</p><p><strong>Methods: </strong>A total of 18 patients with type 2 diabetes (T2D, 8 with SFN, 10 without SFN) and 10 healthy controls (HC) took part in this cross-sectional single-center study and underwent QST of the right leg and DCE-MRN of the right thigh with subsequent calculation of the sciatic nerve constant of capillary permeability (K^trans), extravascular extracellular volume fraction (V_e), and plasma volume fraction (V_p).</p><p><strong>Results: </strong>The K^trans (HC 0.031 min^-1 ± 0.009, T2D 0.043 min^-1 ± 0.015; p = 0.033) and V_e (HC 1.2% ± 1.5, T2D: 4.1% ± 5.1; p = 0.027) were lower in T2D patients compared to controls. In T2D patients, compound z‑scores of thermal and mechanical detection correlated with K^trans (r = 0.73; p = 0.001, and r = 0.57; p = 0.018, respectively) and V_e (r = 0.67; p = 0.002, and r = 0.69; p = 0.003, respectively). Compound z‑scores of thermal pain and V_p (r = -0.57; p = 0.015) correlated negatively.</p><p><strong>Discussion: </strong>The findings suggest that parameters of peripheral nerve microcirculation are related to different symptoms in SFN: A reduced capillary permeability may result in a loss of function related to insufficient nutritional supply, whereas increased capillary permeability may be accompanied by painful symptoms related to a gain of function.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"55-66"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9947586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging : A Prospective Study.","authors":"Nils F Grauhan, Natascha Grünebach, Lavinia Brockstedt, Antoine Sanner, Thorsten Feiweier, Vanessa Schöffling, Marc A Brockmann, Ahmed E Othman","doi":"10.1007/s00062-023-01338-3","DOIUrl":"10.1007/s00062-023-01338-3","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to evaluate the image quality and feasibility of a field map-based technique to correct for susceptibility-induced geometric distortions which are typical for diffusion EPI brain imaging.</p><p><strong>Methods: </strong>We prospectively included 52 patients during clinical routine in this single-center study. All scans were performed on a 3T MRI. Patients' indications for MRI mainly consisted of suspected stroke due to the clinical presentation. For the morphological comparison of the corrected and uncorrected EPI diffusion, three experienced radiologists assessed the image quality of the sequences in a blinded and randomized fashion using a Likert scale (1 being poor; 5 being excellent). To ensure comparability of the two methods, an additional quantitative analysis of the apparent diffusion coefficient (ADC) was performed.</p><p><strong>Results: </strong>Corrected EPI diffusion was rated significantly superior in all the selected categories: overall level of artifacts (p < 0.001), degree of distortion at the frontal, temporal, occipital and brainstem levels (p < 0.001), conspicuousness of ischemic lesions (p < 0.001), image quality (p < 0.001), naturality (p < 0.001), contrast (p < 0.001), and diagnostic confidence (p < 0.001).</p><p><strong>Conclusion: </strong>Corrected EPI diffusion offers a significant reduction of geometric distortion in all evaluated brain regions and an improved conspicuousness of ischemic lesions. Image quality, overall artifacts, naturality, contrast and diagnostic confidence were also rated superior in comparison to uncorrected EPI diffusion.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"85-91"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881677/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10113703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Quattro Technique for Medium Distal Vessel Occlusion Stroke.","authors":"Marios-Nikos Psychogios, Ioannis Tsogkas, Kristine Blackham, Victor Schulze-Zachau, Thilo Rusche, Nikos Ntoulias, Alex Brehm, Urs Fischer, Peter B Sporns","doi":"10.1007/s00062-023-01317-8","DOIUrl":"10.1007/s00062-023-01317-8","url":null,"abstract":"","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"257-262"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9690774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Treatment of In-stent Restenosis of the Internal Carotid Artery Using Drug-eluting Balloons.","authors":"Annamária Marton, Eszter Blényesi, Katalin Török, Gábor Balogh, István Gubucz, Sándor Nardai, Gábor Lenzsér, Csaba Nagy, Gábor Bajzik, József Tollár, Imre Repa, Ferenc Nagy, Zsolt Vajda","doi":"10.1007/s00062-023-01343-6","DOIUrl":"10.1007/s00062-023-01343-6","url":null,"abstract":"<p><strong>Purpose: </strong>In-stent restenosis (ISR) following internal carotid artery (ICA) stenting is relatively common with an estimated incidence of 5%. Treatment options include repeat angioplasty with conventional or drug-eluting balloons (DEB), repeat stent angioplasty and surgical intervention. Application of DEB in ISR of the coronary and peripheral arteries is an established method; however, data on DEB treatment of ICA ISR are sparse. In this work, results from a retrospective cohort of 45 patients harboring 46 ICA ISR lesions treated with DEB angioplasty are presented.</p><p><strong>Methods: </strong>Clinical, procedural and imaging data from DEB angioplasty treatment of 46 high-grade ICA ISR lesions in 45 patients, performed between 2013 and 2021 were collected. A single type of DEB (Elutax, Aachen Resonance, Aachen, Germany) was used in all procedures. Imaging follow-up was performed by regular Doppler ultrasound (DUS), verified by computed tomography angiography (CTA) in cases suspicious for a recurrent ISR.</p><p><strong>Results: </strong>Technical success was 100%. Intraprocedural and postprocedural complications were not encountered. Clinical follow-up was obtained in all patients. Recurrent stroke in the affected territory was not encountered. A recurrent ISR following DEB treatment was confirmed by DUS and CTA in 4/46 (8.7%) of the lesions and were retreated with DEB. A third recurrent ISR occurred in a single case (2%) and following a second DEB retreatment there were no signs of a fourth recurrence after 36 months follow-up.</p><p><strong>Conclusion: </strong>The use of DEB angioplasty is a safe and effective treatment of ICA ISR lesions, yielding significantly better results compared to other modalities. Randomized multicenter studies are warranted.</p>","PeriodicalId":10391,"journal":{"name":"Clinical Neuroradiology","volume":" ","pages":"147-154"},"PeriodicalIF":2.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10161835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}