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Clinical Neuroradiology

F Dorn, M Herzberg
No abstract text is available yet for this article.
August 13, 2018: Clinical Neuroradiology
Christopher Alan Hilditch, Waleed Brinjikji, Joanna Schaafsma, Chun On Anderson Tsang, Patrick Nicholson, Ronit Agid, Timo Krings, Vitor M Pereira
BACKGROUND AND PURPOSE: Extracranial internal carotid artery (ICA) dissection is an important cause of ischemic stroke in younger adults. The optimal medical and surgical strategies for managing these lesions have not been well established. We report a case series of extracranial ICA reconstruction using overlapping flow-diverter stents as a rescue therapy for the treatment of symptomatic ICA dissection in patients presenting with recurrent ischemic stroke and/or severe hemispheric hypoperfusion who failed medical management...
August 13, 2018: Clinical Neuroradiology
Lili Détraz, Marielle Ernst, Romain Bourcier
Since the clinical recognition of endovascular therapy (EVT) for stroke treatment is recent (2015), some organizational issues, such as the "drip and ship (DS) versus mothership (MS)" access to EVT remain unanswered. There is growing pressure to guarantee immediate access to EVT with limited human resources and infrastructures. As results from prospective studies are missing, a review of the existing literature dealing with clinical retrospective studies was carried out. Most of the studies did not report a significant difference with respect to the adverse effects for patients treated by EVT according to the organizational paradigm of care...
August 8, 2018: Clinical Neuroradiology
C A Taschner, O Staszewski, M J Shah, H Urbach, U Würtemberger, M Prinz
No abstract text is available yet for this article.
August 8, 2018: Clinical Neuroradiology
Hyon-Jo Kwon, Jeong-Wook Lim, Hyeon-Song Koh, BumSoo Park, Seung-Won Choi, Seon-Hwan Kim, Jin-Young Youm, Shi-Hun Song
PURPOSE: We report our experience of using stent-retrievers for recurrent cerebral vasospasm (CVS) secondary to aneurysmal subarachnoid hemorrhage (aSAH). METHODS: We performed a retrospective review of our prospectively maintained institutional database to identify all patients with recurrent CVS and treated with stent-retrievers between April 2011 and May 2017. All patients were initially treated with intra-arterial (IA) vasodilators and were subsequently re-treated with stent-retrievers if they developed recurrent vasospasm...
August 6, 2018: Clinical Neuroradiology
László Solymosi
No abstract text is available yet for this article.
August 3, 2018: Clinical Neuroradiology
(no author information available yet)
No abstract text is available yet for this article.
August 1, 2018: Clinical Neuroradiology
J Levi Chazen, Travis Stradford, Michael G Kaplitt
Magnetic resonance guided focused ultrasound (MRgFUS) recently received FDA approval for treatment of medically refractory essential tremor and significant progress continues to be made in operational protocols. To that end, the goal of this technical article is to illustrate current optimization strategies for preprocedural, intraprocedural, and postprocedural imaging, with a particular focus on technically challenging intraprocedural MRI to assess satisfactory ablation.
July 25, 2018: Clinical Neuroradiology
Emerson Brandão Sousa, Laise Franco de Sousa Brandão, Cléciton Braga Tavares, José Nazareno Pearce de Oliveira Brito, Iruena Moraes Kessler
PURPOSE: Endovascular therapy for the treatment of cerebral aneurysms has a higher incidence of rebleeding and a lower occlusion rate than microsurgical clipping. This study investigated whether first coil volume packing density (1st VPD) and first loop diameter of the first coil (1st LD) are associated with recanalization after endovascular coiling. METHODS: The study included 174 initial saccular aneurysm cases from 2010 to 2015. Between the recanalization and non-recanalization groups, we compared age, sex, aneurysm location, rupture occurrence, shape, maximum aneurysm size, neck width, dome-to-neck ratio, aneurysm volume, coil volume, VPD, 1st VPD, 1st LD, relation of the first loop diameter of the first coil and the maximum aneurysm size (RLAS), types of assistance techniques, and the Raymond scale score at initial and follow-up angiography...
July 25, 2018: Clinical Neuroradiology
Man Kwun Andrew Li, Anderson Chun On Tsang, Frederick Chun Pong Tsang, Wai Shing Ho, Raymand Lee, Gilberto Ka Kit Leung, Wai Man Lui
PURPOSE: Stenting and angioplasty of the vertebral artery (VA) is used to treat symptomatic stenosis but the long-term outcomes and complications are unclear. This study evaluated the long-term clinical outcomes and procedure-related complications in patients who underwent extracranial VA stenting and angioplasty, in particular the risks of in-stent restenosis (ISR) and stent fracture. METHODS: This was a retrospective review of consecutive patients suffering from symptomatic extracranial VA stenosis who were treated with balloon-expandable bare metal stents...
July 23, 2018: Clinical Neuroradiology
Elisabeth Klupp, Barbara Cervantes, Nico Sollmann, Franziska Treibel, Dominik Weidlich, Thomas Baum, Ernst J Rummeny, Claus Zimmer, Jan S Kirschke, Dimitrios C Karampinos
PURPOSE: The close proximity of blood vessels to the brachial plexus nerves can confound nerve visualization in conventional fat-suppressed 3D T2-weighted sequences. Vessel suppression can be accomplished by means of motion-sensitizing preparation. The aim of this study was to qualitatively and semi-quantitatively evaluate short tau inversion recovery (STIR) 3D turbo spin echo (TSE) in conjunction with an adiabatic T2 preparation incorporating motion sensitization for magnetic resonance neurography (MRN) of the brachial plexus in a clinical routine setting...
July 23, 2018: Clinical Neuroradiology
Johannes Nowak, Stephanie Theresa Jünger, Henner Huflage, Carolin Seidel, Annika Hohm, Lindsey A Vandergrift, Katja von Hoff, Stefan Rutkowski, Torsten Pietsch, Monika Warmuth-Metz
PURPOSE: Epigenetic profiling has recently identified clinically and molecularly distinct subgroups of ependymoma. The 2016 World Health Organization (WHO) classification recognized supratentorial ependymomas (ST-EPN) with REL-associated protein/p65 (RELA) fusion as a clinicopathological entity. These tumors represent 70% of pediatric ST-EPN characterized by recurrent C11orf95-RELA fusion transcripts, which lead to pathological activation of the nuclear factor 'kappa-light-chain-enhancer' of activated B-cells (NF-κB) signaling pathway...
July 19, 2018: Clinical Neuroradiology
Volker Maus, Silja Henkel, Alexander Riabikin, Christian Riedel, Daniel Behme, Ioannis Tsogkas, Amelie Carolina Hesse, Nuran Abdullayev, Olav Jansen, Martin Wiesmann, Anastasios Mpotsaris, Marios-Nikos Psychogios
BACKGROUND: The stent retriever assisted vacuum-locked extraction (SAVE) technique was introduced as an effective thrombectomy method in stroke patients suffering from intracranial large vessel occlusion (LVO). This article presents our multicenter, large-scale experience with SAVE. METHODS: The study involved a retrospective core team analysis of 200 patients undergoing mechanical thrombectomy using the SAVE technique due to intracranial LVO at 4 German centers...
July 19, 2018: Clinical Neuroradiology
Arndt-Hendrik Schievelkamp, Alina Jurcoane, Theodor Rüber, Leon Ernst, Andreas Müller, Burkhard Mädler, Hans Heinz Schild, Elke Hattingen
PURPOSE: Limbic encephalitis (LE) is an immune-related disease with limbic symptoms, variable and asymmetric magnetic resonance imaging (MRI) aspects and antibody profiles. This study investigated the diagnostic value of quantitative relaxation times T2 (qT2) and MRI signal intensities (SI) in LE. METHODS: The prospective 3T-MRI study included 39 epilepsy patients with initially suspected LE and 20 healthy controls. Values and asymmetry indices of qT2, T2-weighted (T2-w) and proton density (PD)-w SI of manually delineated and automatically segmented amygdala and hippocampus were measured...
July 16, 2018: Clinical Neuroradiology
H Urbach, E Kaya, U Hubbe
No abstract text is available yet for this article.
July 5, 2018: Clinical Neuroradiology
Ajay Malhotra, Xiao Wu, Long Tu, Kimberly Seifert
No abstract text is available yet for this article.
June 27, 2018: Clinical Neuroradiology
Aikaterini Fitsiori, Steve Philippe Martin, Alix Juillet De Saint Lager, Joanna Gariani, Karl-Olof Lovblad, Xavier Montet, Maria Isabel Vargas
PURPOSE: To investigate the impact of iterative metal artifact reduction (iMAR) on artifacts related to neurosurgical clips or endovascular coils when combined to filtered back projection (FBP) or advanced modelled iterative reconstruction (ADMIRE). MATERIAL AND METHODS: In this study 21 unenhanced brain computed tomography (CT) examinations were reconstructed with FBP and level 2 of ADMIRE, both techniques with and without iMAR algorithm, resulting in 4 series per acquisition...
June 19, 2018: Clinical Neuroradiology
Romain Bourcier, Imad Derraz, Béatrice Delasalle, Marine Beaumont, Sebastien Soize, Laurence Legrand, Hubert Desal, Serge Bracard, Olivier Naggara, Catherine Oppenheim
PURPOSE: The susceptibility vessel sign (SVS) has been described on gradient echo (GRE) magnetic resonance imaging (MRI) in acute ischemic stroke patients by large vessel occlusion. The presence of SVS (SVS+) was associated with treatment outcome and stroke etiology with conflicting results. Based on multicenter data from the THRombectomie des Artères CErebrales (THRACE) study, we aimed to determine if the association between SVS and cardioembolic etiology (CE) was independent of GRE sequence parameters...
June 12, 2018: Clinical Neuroradiology
Bárbara Trapp, Charlie Chia-Tsong Hsu, Jyoti Panwar, Timo Krings
No abstract text is available yet for this article.
June 1, 2018: Clinical Neuroradiology
Sandra A Cornelissen, Tommy Andersson, Ake Holmberg, Patrick A Brouwer, Michael Söderman, Pervinder Bhogal, Leonard L L Yeo
BACKGROUND: Approved alternatives in the guidelines for acute ischemic stroke patients who have failed intracranial thrombectomy are lacking. Primary permanent intracranial stenting was initially used in the era before thrombectomy and might still be a useful rescue treatment in acute stroke patients suffering from ongoing large vessel occlusion refractory to thrombectomy. METHODS: The prospectively collected registry of patients with acute stroke caused by large vessel occlusions and treated with the emboTrap® device in Karolinska Hospital from October 2013 through March 2017 were retrospectively reviewed...
May 29, 2018: Clinical Neuroradiology
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