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Journal of Neuroradiology. Journal de Neuroradiologie

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https://www.readbyqxmd.com/read/28434772/neurointerventional-staffing-the-next-frontier
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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/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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/28237365/can-a-15-sec-flair-replace-conventional-flair-sequence-in-stroke-mr-protocols
#10
J Benzakoun, B Maïer, D Calvet, M Edjali, G Turc, S Lion, L Legrand, W Ben Hassen, O Naggara, J F Meder, J L Mas, C Oppenheim
BACKGROUND AND PURPOSE: Triage imaging facilitates the timely recognition of acute stroke with prognostic implications. Improvement in MR acquisition speed is needed given the extreme time constraints before treatment. We compared an ultrafast Echo-Planar FLAIR sequence (EPI-FLAIR) and a conventional FLAIR sequence (cFLAIR) for their diagnostic performances and ability to estimate the age of infarction. MATERIAL AND METHODS: Between June and August 2014, 125 consecutive patients (age 69±18 years, 48% men) admitted for a suspicion of acute (≤48-hrs) stroke were explored by both FLAIR sequences at 1...
February 22, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28236497/overdiagnosis-incidental-findings-and-socrates-three-sieves
#11
EDITORIAL
Jean Raymond, Hélène Long, David J Roy
No abstract text is available yet for this article.
February 21, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28222909/primary-central-nervous-system-natural-killer-t-cell-lymphoma-an-atypical-case-of-chronic-meningitis
#12
LETTER
Lucas Alessandro, Federico Carpani, Naomi Arakaki, Diego Kaski, Hernan Chaves
No abstract text is available yet for this article.
February 17, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28215716/validation-of-a-quantitative-susceptibility-mapping-acquisition-and-reconstruction-pipeline-using-a-new-iron-sucrose-based-mr-susceptibility-phantom
#13
Jeremy Deverdun, François Molino, Nicolas Menjot de Champfleur, Emmanuelle Le Bars
PURPOSE: Quantitative susceptibility mapping is a new technique and its processing pipeline has to be validated before clinical practice. We described an easy to build magnetic resonance (MR) susceptibility phantom based on iron sucrose. MATERIALS AND METHODS: In a plastic container, Eppendorf tubes containing increasing iron sucrose concentration ranging from 0 to 60μg Fe/mL were inserted in an agarose gel. To estimate susceptibility, multiple coronal gradient echo acquisitions were performed with varying angle of the phantom relative to the B0 field, ranging from 30 to 90°...
February 16, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28187866/the-effects-of-statin-therapy-on-carotid-plaque-composition-and-volume-a-systematic-review-and-meta-analysis
#14
Waleed Brinjikji, Vance T Lehman, David F Kallmes, Alejandro A Rabinstein, Giuseppe Lanzino, Mohammad H Murad, Sharon Mulvagh, James Klaas, Jonathan Graff-Radford, Kevin J DeMarco, John Huston Iii
BACKGROUND AND PURPOSE: Prior studies have demonstrated that statin use stabilizes and diminishes atherosclerotic lesions. The main objective of this systematic review and meta-analysis was to study the effects of statin therapy on carotid plaque composition as seen on serial high-resolution carotid plaque MRI. We hypothesized that statin therapy would result in significant improvements in lipid-rich-necrotic-core (LRNC) volumes, wall volumes and lumen volumes. MATERIALS AND METHODS: Prospective studies using serial high-resolution carotid plaque MRI (1...
February 7, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28187865/a-new-threshold-of-apparent-diffusion-coefficient-values-in-white-matter-after-successful-tissue-plasminogen-activator-treatment-for-acute-brain-ischemia
#15
Atsushi Sato, Yusaku Shimizu, Junichi Koyama, Kazuhiro Hongo
BACKGROUND AND PURPOSE: Tissue plasminogen activator (tPA) is effective for the treatment of acute brain ischemia, but may trigger fatal brain edema or hemorrhage if the brain ischemia results in a large infarct. Herein, we attempted to predict the extent of infarcts by determining the optimal threshold of ADC values on DWI that predictively distinguishes between infarct and reversible areas, and by reconstructing color-coded images based on this threshold. MATERIALS AND METHODS: The study subjects consisted of 36 patients with acute brain ischemia in whom MRA had confirmed reopening of the occluded arteries in a short time (mean: 99min) after tPA treatment...
February 7, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28185669/electrical-stimulation-and-monitoring-devices-of-the-cns-an-imaging-review
#16
REVIEW
Sohil H Patel, Casey H Halpern, Timothy M Shepherd, Vincent M Timpone
Functional neurosurgery is a rapidly growing field with exciting future potential applications. This article describes currently used implanted electronic devices for neurologic stimulation and monitoring. The devices to be reviewed include invasive EEG electrodes, deep brain stimulator, motor cortex stimulator, responsive neurostimulation, osteo-integrated hearing aid, middle ear implant, cochlear implant, auditory brainstem implant, vagal nerve stimulator and spinal cord stimulator. Emphasis is placed on the normal components, function, positioning, potential complications and MRI safety of these devices...
February 6, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28168990/clinical-assessment-of-cerebral-hemodynamics-in-moyamoya-disease-via-multiple-inversion-time-arterial-spin-labeling-and-dynamic-susceptibility-contrast-magnetic-resonance-imaging-a-comparative-study
#17
Peng-Gang Qiao, Cong Han, Zhi-Wei Zuo, Yi-Tuo Wang, Josef Pfeuffer, Lian Duan, Tianyi Qian, Gong-Jie Li
BACKGROUND AND PURPOSE: For Moyamoya disease (MMD) patients, accurate hemodynamic assessment is critical for treatment selection and efficacy assessment. This study aims to investigate the clinical value of mTI-ASL in assessing the cerebral hemodynamics of MMD patients before and after revascularization, relative to DSC-MRI. MATERIALS AND METHODS: Forty-one MMD patients underwent mTI-ASL and DSC-MRI during blood perfusion. Quantitative parameters for the bilateral supply vessels of middle and anterior cerebral arteries, including DSC-TTP, DSC-CBF, ASL-BAT, and ASL-CBF were measured...
February 3, 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
#18
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
#19
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
#20
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
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