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Journal of Neuroradiology. Journal de Neuroradiologie

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https://www.readbyqxmd.com/read/28478114/mri-quantitative-t2-mapping-on-thrombus-to-predict-recanalization-after-endovascular-treatment-for-acute-anterior-ischemic-stroke
#1
R Bourcier, N Brecheteau, V Costalat, B Daumas-Duport, B Guyomarch-Delasalle, H Desal, O Naggara, J M Serfaty
BACKGROUND: In anterior acute ischemic stroke (AAIS) treated with endovascular treatment (EVT), the susceptibility vessel sign (SVS+ or SVS-) is related to recanalization results (TICI 2b/3) and clinical outcome. However, a binary qualitative assessment of thrombus using SVS does not reflect its complex composition. Our aim was to assess whether a quantitative MRI marker, Thrombus-T2* relaxation time, may be assessable in clinical routine and may to predict early successful recanalization after EVT, defined as a TICI 2b/3 recanalization obtained in 2 attempts or less...
May 3, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28478113/randomize-the-first-patient
#2
Jean Raymond, Robert Fahed, Tim E Darsaut
BACKGROUND: When to proceed with a randomized trial (RCT) that tests the merits of innovative treatments has been controversial. Tom Chalmers proposed that we should randomize the first patient. METHODS: We examine various scenarios and compare hypothetical results of early and delayed RCTs and case series. Then we review potential reasons why Chalmers' idea has not yet been widely applied. RESULTS: Case series of innovative treatments followed by delayed RCTs put many more patients at risk of a poor outcome...
May 3, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28478112/a-computational-fluid-dynamics-cfd-study-of-web-treated-aneurysms-can-cfd-predict-web-compression-during-follow-up
#3
Jildaz Caroff, Cristian Mihalea, Valerio Da Ros, Takanobu Yagi, Marta Iacobucci, Léon Ikka, Jacques Moret, Laurent Spelle
BACKGROUND: Recent reports have revealed a worsening of aneurysm occlusion between WEB treatment baseline and angiographic follow-up due to "compression" of the device. OBJECTIVE: We utilized computational fluid dynamics (CFD) in order to determine whether the underlying mechanism of this worsening is flow related. METHODS: We included data from all consecutive patients treated in our institution with a WEB for unruptured aneurysms located either at the middle cerebral artery or basilar tip...
May 3, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28454722/suprasellar-atypical-teratoid-rhabdoid-tumor
#4
LETTER
Diogo Goulart Corrêa, Simone Rachid de Souza, Nina Ventura, Aline Helen Camacho, Leila Chimelli, Emerson Leandro Gasparetto
No abstract text is available yet for this article.
April 25, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28454721/the-treatment-of-brain-arteriovenous-malformation-study-tobas-a-preliminary-inter-and-intra-rater-agreement-study-on-patient-management
#5
Robert Fahed, André L Batista, Tim E Darsaut, Jean-Christophe Gentric, Célina Ducroux, Chiraz Chaalala, David Roberge, Michel W Bojanowski, Alain Weill, Daniel Roy, Elsa Magro, Jean Raymond
OBJECT: The best management of brain arteriovenous malformation (bAVM) patients remains unknown. Randomized allocation may be more readily accepted when there is uncertainty and disagreement regarding the management of potential participants. In planning for a trial, we aimed to assess variability and agreement among physicians managing bAVM patients. METHODS: A portfolio composed of 35 patients was sent to 47 clinicians of various specialties managing bAVM patients...
April 25, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28434772/neurointerventional-staffing-the-next-frontier
#6
EDITORIAL
Karl-Olof Lövblad, Laurie Bouchez, Amine M Korchi, Zsolt Kulcsar
No abstract text is available yet for this article.
April 20, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28411967/utility-of-relative-adc-ratio-in-patient-selection-for-endovascular-revascularization-of-large-vessel-occlusion
#7
Narihide Shinoda, Shinya Hori, Kazuyuki Mikami, Toshiaki Bando, Daisuke Shimo, Takahiro Kuroyama, Yoji Kuramoto, Masato Matsumoto, Osamu Hirai, Yasushi Ueno
PURPOSE: The relative apparent diffusion coefficient (ADC) ratio on magnetic resonance imaging (MRI) can be used to evaluate the degree of ischemia. Here, we assessed the predictability of ischemic reversibility and the risk of hemorrhagic transformation using the relative ADC ratio. METHODS: This single-center retrospective study analyzed 56 patients with acute occlusion of the internal carotid artery (ICA) or the middle cerebral artery (M1) with endovascular revascularization...
April 12, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28341000/arterial-spin-labeling-perfusion-imaging-of-children-with-subdural-hemorrhage-perfusion-abnormalities-in-abusive-head-trauma
#8
Alex Mun-Ching Wong, Chih-Hua Yeh, Ho-Ling Liu, Tai-Wei Wu, Kuang-Lin Lin, Huei-Shyong Wang, Cheng-Hong Toh
BACKGROUND AND PURPOSE: Perfusion abnormalities have not been well described in children with subdural hemorrhage (SDH). We investigated whether patients with abusive head trauma (AHT+) had more perfusion abnormalities than those without (AHT-). MATERIALS AND METHODS: We reviewed the perfusion MR studies of 12 infants with SDH and 21 controls. The perfusion images were obtained using a pseudo-continuous arterial spin-labeling sequence with volumetric fast spin-echo readout...
March 21, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28340999/emergent-vs-elective-stenting-of-carotid-stenosis-with-intraluminal-carotid-thrombus
#9
Martin Hlavica, Jatta Berberat, Benjamin Victor Ineichen, Javier Añon, Michael Diepers, Krassen Nedeltchev, Timo Kahles, Luca Remonda
BACKGROUND AND PURPOSE: Carotid stenosis (CS) with intraluminal carotid artery thrombus (ICAT) is rare but ominous finding. The optimal treatment modality is unclear. The aim of this study was to analyze the feasibility and outcome of acute endovascular intervention and delayed elective endovascular therapy after initial anticoagulation in these delicate cases. Moreover, both treatment points were compared and several parameters discussed to facilitate the determination of the optimal time modality in future cases...
March 21, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28262374/should-indications-for-web-aneurysm-treatment-be-enlarged-report-of-a-series-of-20%C3%A2-patients-with-aneurysms-in-atypical-locations-for-web-treatment
#10
L Pierot, A Biondi, A-P Narata, C Mihalea, A-C Januel, G Metaxas, R Bibi, J Caroff, S Soize, C Cognard, L Spelle, D Herbreteau
BACKGROUND AND PURPOSE: Flow disruption with the WEB device is an innovative technique for the endovascular treatment of wide neck bifurcation aneurysms. Good clinical practice trials have shown high safety of this treatment with good efficacy. Technical developments (single layer devices and smaller microcatheters) facilitate the treatment, potentially leading to enlargement of indications. This series is collecting aneurysms in "atypical" locations for WEB treatment and analyzing safety and efficacy of this treatment...
March 2, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28258760/comparison-between-enhanced-susceptibility-weighted-angiography-and-time-of-flight-sequences-in-the-detection-of-arterial-occlusion-in-acute-ischemic-stroke
#11
O Vanaerde, J-F Budzik, A Mackowiak, L Norberciak, M Uettwiller, X Leclerc, S Verclytte
PURPOSE: Optimizing the MRI protocol in acute ischemic stroke remains a challenging issue. In this field, susceptibility-weighted sequences have proved their superiority over T2*. Besides the strengthened susceptibility effect, enhanced susceptibility-weighted angiography (eSWAN) sequence provides also a time-of-flight (TOF) effect, allowing the exploration of the intracranial arterial circulation. The objective of our study was to compare eSWAN and 3D TOF, considered as the reference, in the detection of arterial occlusion in acute stroke...
February 28, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28168991/intracranial-stenting-after-the-wingspan-withdrawal-in-france-clinical-experience-using-a-low-profile-coronary-stent
#12
LETTER
Cyril Dargazanli, Daniel Mantilla, Ulrike Wiesspeiner, Xavier Ayrignac, Vincent Costalat
No abstract text is available yet for this article.
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28162787/serial-mri-images-of-an-unusual-presentation-of-anti-gad-encephalitis-a-new-pattern
#13
LETTER
Anastasia Bougea, Vasiliki Zouvelou, Georgios Velonakis, Michail Rentzos
No abstract text is available yet for this article.
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28131432/dominant-vertebral-artery-status-and-functional-outcome-after-endovascular-therapy-of-symptomatic-basilar-artery-occlusion
#14
Jun Young Chang, Seunguk Jung, Cheolkyu Jung, Hee-Joon Bae, Oki Kwon, Moon-Ku Han
BACKGROUND AND PURPOSE: To determine whether status of dominant vertebral artery could affect clinical outcome in patients with symptomatic basilar artery occlusion (BAO). METHODS: We reviewed patients with symptomatic BAO who underwent endovascular treatment at the institute between January 2007 and July 2014. Patients were categorized into 2 groups according to functional outcome and baseline characteristics, treatment related factors were compared. Variables including clinical and imaging parameters were also compared according to the dominant V1 lesion...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27865557/hypoperfusion-of-the-thalamus-is-associated-with-disability-in-relapsing-remitting-multiple-sclerosis
#15
Emilie Doche, Angèle Lecocq, Adil Maarouf, Guillaume Duhamel, Elisabeth Soulier, Sylviane Confort-Gouny, Audrey Rico, Maxime Guye, Bertrand Audoin, Jean Pelletier, Jean-Philippe Ranjeva, Wafaa Zaaraoui
BACKGROUND: While gray matter (GM) perfusion abnormalities have been evidenced in multiple sclerosis (MS) patients, the relationships with disability still remain unclear. Considering that atrophy is known to impact on perfusion, we aimed to assess perfusion abnormalities in GM of MS patients, outside atrophic regions and investigate relationships with disability. METHODS: Brain perfusion of 23 relapsing remitting MS patients and 16 matched healthy subjects were assessed at 3T using the pseudo-continuous arterial spin labeling magnetic resonance imaging technique...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27836652/intracranial-vessel-wall-imaging-for-evaluation-of-steno-occlusive-diseases-and-intracranial-aneurysms
#16
REVIEW
Waleed Brinjikji, Mahmud Mossa-Basha, John Huston, Alejandro A Rabinstein, Giuseppe Lanzino, Vance T Lehman
Cerebrovascular diseases have traditionally been classified, diagnosed and managed based on their luminal characteristics. However, over the past several years, several advancements in MRI techniques have ushered in high-resolution vessel wall imaging (HR-VWI), enabling evaluation of intracranial vessel wall pathology. These advancements now allow us to differentiate diseases which have a common angiographic appearance but vastly different natural histories (i.e. moyamoya versus atherosclerosis, reversible cerebral vasoconstriction syndrome versus vasculitis, stable versus unstable intracranial aneurysms)...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27743788/cerebrovascular-reactivity-in-the-caudate-nucleus-lentiform-nucleus-and-thalamus-in-patients-with-carotid-artery-disease
#17
Nolan S Hartkamp, Reinoud P H Bokkers, M J P van Osch, Gert J de Borst, Jeroen Hendrikse
BACKGROUND AND PURPOSE: To assess the effect of unilateral large vessel disease upon the cerebral hemodynamic autoregulatory status in the basal ganglia of patients with steno-occlusive internal carotid artery (ICA) disease. MATERIALS AND METHODS: Twenty-five healthy volunteers and 38 patients with a unilateral symptomatic steno-occlusive ICA lesion and were investigated; 20 with a stenosis >50% and 18 with an occlusion. Cerebral blood flow (CBF) and cerebrovascular reactivity (CVR) were assessed with pseudo-continuous arterial spin labeling (ASL) magnetic resonance (MR) imaging before and after administration of acetazolamide...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28249747/the-association-between-collateral-status-recanalization-and-long-term-outcome-in-stroke-patients-treated-with-stent-retrievers-are-there-indications-not-to-perform-thrombectomy-based-on-ct-angiography
#18
Hannes Nordmeyer, Nadine Webering, Rene Chapot, Jeffrie Hadisurya, Markus Heddier, Paul Stracke, Klaus Berger, Stefan Isenmann, Ralph Weber
BACKGROUND AND PURPOSE: To investigate the association between baseline pial collateral status on computed tomography angiography (CTA) with recanalization and functional outcome in patients with acute anterior circulation stroke treated with stent retriever thrombectomy. MATERIAL AND METHODS: Retrospective analysis of 87 patients from a prospective thrombectomy registry. Collateral status on CTA source images was categorized into good, moderate, and poor with the Tan and Miteff scores by two-blinded readers...
February 26, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28238522/endovascular-thrombectomy-and-medical-therapy-versus-medical-therapy-alone-in-acute-stroke-a-randomized-care-trial
#19
Naim N Khoury, Tim E Darsaut, Jimmy Ghostine, Yan Deschaintre, Nicole Daneault, André Durocher, Sylvain Lanthier, Alexandre Y Pope, Céline Odier, Louise-Hélène Lebrun, François Guilbert, Jean-Christophe Gentric, André Batista, Alain Weill, Daniel Roy, Serge Bracard, Jean Raymond
BACKGROUND: Until recently, the benefits of endovascular treatment in stroke were not proven. Care trials have been designed to simultaneously offer yet-to-be validated interventions and verify treatment outcomes. Our aim was to implement a care trial for patients with acute ischemic stroke. METHODS: The study was offered to all patients considered for endovascular management of acute ischemic stroke in one Canadian hospital. Inclusion criteria were broad: onset of symptoms≤5h or at any time in the presence of clinical-imaging mismatch and suspected or demonstrated proximal large vessel occlusion...
February 23, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28237366/ct-perfusion-diagnoses-delayed-cerebral-ischemia-in-the-early-stage-of-the-time-window-after-aneurysmal-subarachnoid-hemorrhage
#20
Haogeng Sun, Wanjiang Li, Junpeng Ma, Yi Liu, Chao You
BACKGROUND AND PURPOSE: It has been acknowledged that delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (SAH) can be diagnosed by CT perfusion (CTP) in the DCI time-window. We evaluated the diagnostic accuracy of CTP for DCI during the early stage of the time-window. MATERIALS AND METHODS: We prospectively enrolled patients with aneurysmal SAH. DCI was defined as both new cerebral infarction and clinical deterioration after SAH. CTP was performed by using a standardized protocol with predefined regions of interest in 4 to 6 days after SAH...
February 22, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
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