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Clinical Neuroradiology

Jeong-Yoon Lee, Kayeong Im, Kyum-Yil Kwon
No abstract text is available yet for this article.
October 8, 2018: Clinical Neuroradiology
Direnç Özlem Aksoy, Jülide Canan Umurhan Akkan, Alpay Alkan, Ayşe Aralaşmak, Hafize Otçu Temur, İsmail Yurtsever
PURPOSE: The aim of the study was to investigate any metabolic changes on magnetic resonance spectroscopy (MRS) throughout the visual pathway of the brain in patients with glaucoma and a control group and correlate the results with clinical findings. MATERIAL AND METHODS: A total of 87 patients were enrolled in the study, 30 healthy controls, 25 glaucoma, 16 suspected glaucoma (GS) and 16 ocular hypertension (OHT) patients. A single voxel MRS on TE 30 ms was performed by placing the volume of interest (VOI) on the corpus geniculatum laterale (CGL) and primary visual cortex (VC)...
October 5, 2018: Clinical Neuroradiology
Martin Alexander Schaller, Felix Wicke, Christian Foerch, Stefan Weidauer
PURPOSE: As a result of multilateral migration and globalization in times of humanitarian crises, western countries face a possible increase in the incidence of central nervous system tuberculosis (CNS TB). The diagnosis of CNS TB is challenging and often delayed due to the manifold and often non-specific presentation of the disease. The aim of this review is to analyze and summarize imaging features and correlated clinical findings of CNS TB. METHODS: The different manifestations of CNS TB are explained and illustrated by characteristic neuroradiological as well as neuropathological findings...
September 17, 2018: Clinical Neuroradiology
Aron S Talai, Zahinoor Ismail, Jan Sedlacik, Kai Boelmans, Nils D Forkert
OBJECTIVES: The overlapping symptoms of Parkinson's disease (PD) and progressive supranuclear palsy-Richardson's syndrome (PSP-RS) often make a correct clinical diagnosis difficult. The volume of subcortical brain structures derived from high-resolution T1-weighted magnetic resonance imaging (MRI) datasets is frequently used for individual level classification of PD and PSP-RS patients. The aim of this study was to evaluate the benefit of including additional morphological features beyond the simple regional volume, as well as clinical features, and morphological features of cortical structures for an automatic classification of PD and PSP-RS patients...
September 14, 2018: Clinical Neuroradiology
Johannes A R Pfaff, Ralf Siekmann, Yogesh P Shah, Peter A Ringleb, Christian Ulfert, Kai Koller, Martin Bendszus, Markus A Möhlenbruch
PURPOSE: To report in vivo experience of a delivery assist catheter as ascending aid for a large-bore catheter for intracranial thromboaspiration. METHODS: Retrospective data collection and analysis of stroke databases of two comprehensive stroke centers focusing on technical and angiographic parameters - primary endpoint defined as reaching the occlusion with a large-bore reperfusion catheter - from patients receiving endovascular stroke treatment using an AXS Offset™ delivery assist catheter (Stryker, Fremont, CA, USA) between May 2017 and November 2017...
September 6, 2018: Clinical Neuroradiology
P Bhogal, M AlMatter, V Hellstern, H Bäzner, O Ganslandt, H Henkes, M Aguilar Pérez
BACKGROUND: Dural arteriovenous fistulas (DAVF) are commonly encountered lesions that can be treated both transvenously, transarterially or using a combined approach. OBJECTIVE: Transvenous coil embolization of DAVF is a recognized treatment option but can be challenging. In this context this article presents clinical experience using the Kaneka ED10 ExtraSoft coils in combination with the Marathon microcatheter to treat high grade DAVF. The physical properties of these coils and the microcatheter were also determined...
August 30, 2018: Clinical Neuroradiology
P Bhogal, J Chudyk, C Bleise, I Lylyk, N Perez, H Henkes, P Lylyk
BACKGROUND AND PURPOSE: Intracranial adjacent tandem lesions of the internal carotid artery (ICA) are rare and the optimal treatment strategy is unknown. This study was carried out to determine whether a single flow diverter stent (FDS) could be successfully used to treat these lesions. METHODS: The prospectively maintained database was retrospectively carried out to identify patients treated between February 2009 and February 2018 with multiple unruptured, tandem ICA aneurysms and treated with a single FDS...
August 30, 2018: Clinical Neuroradiology
Uri Givon, Chen Hoffman, Alon Friedlander, Anat Achiron
PURPOSE: The difficult differentiation between multiple sclerosis (MS) lesions and cervical spondylotic myelopathy (CSM) in the cervical spine is well known. The magnetic resonance imaging (MRI) appearance of both lesions is similar, and clinical parameters are usually used for diagnosis. The objective was to establish a reliable radiologic paradigm for diagnosis of demyelinating lesions in the cervical spine. METHODS: The MRI studies of 33 patients with MS (42 lesions) and 55 patients with CSM (60 lesions) were obtained...
August 23, 2018: Clinical Neuroradiology
D Anitha, Kai Mei, Michael Dieckmeyer, Felix K Kopp, Nico Sollmann, Claus Zimmer, Jan S Kirschke, Peter B Noel, Thomas Baum, Karupppasamy Subburaj
PURPOSE: The aim of this study was to compare vertebral failure loads, predicted from finite element (FE) analysis of patients with and without osteoporotic vertebral fractures (OVF) at virtually reduced dose levels, compared to standard-dose exposure from multidetector computed tomography (MDCT) imaging and evaluate whether ultra-low dose derived FE analysis can still differentiate patient groups. MATERIALS AND METHODS: An institutional review board (IRB) approval was obtained for this retrospective study...
August 21, 2018: Clinical Neuroradiology
Meaghan Reid, Akinrinola O Famuyide, Nils D Forkert, Aron Sahand Talai, James W Evans, Amith Sitaram, Moiz Hafeez, Mohamed Najm, Bijoy K Menon, Andrew Demchuk, Mayank Goyal, Rani Gupta Sah, Christopher D d'Esterre, Philip Barber
PURPOSE: Acute stroke treatment requires simple, quick and accurate detection of early ischemic changes to facilitate treatment decisions guided by published selection criteria. The aim of this study was to determine the accuracy and reliability of multiphase computed tomography angiography (mCTA) perfusion hypoattenuation for detecting early severe ischemia. METHODS: Non-contrast CT (NCCT), mCTA for regional leptomeningeal score (mCTA-rLMC), and mCTA perfusion lesion visibility (mCTA-arterial and mCTA-venous) were assessed blinded to clinical information in patients treated with endovascular therapy (EVT)...
August 21, 2018: Clinical Neuroradiology
Amira Al Raaisi, Joseph Gabrieli, Nader-Antoine Sourour, Frédéric Clarençon
No abstract text is available yet for this article.
August 17, 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
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
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
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