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Journal of Neuroradiology. Journal de Neuroradiologie

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https://www.readbyqxmd.com/read/29132940/bullseye-s-representation-of-cerebral-white-matter-hyperintensities
#1
Carole H Sudre, Beatriz Gomez Anson, Indran Davagnanamd, Anne Schmitt, Alex F Mendelson, Ferran Prados, Lorna Smith, David Atkinson, Alun David Hughes, Nish Chaturvedi, M Jorge Cardoso, Frederik Barkhof, Hans Rolf Jaeger, Sébastien Ourselin
BACKGROUND AND PURPOSE: Visual rating scales have limited capacities to depict the regional distribution of cerebral white matter hyperintensities (WMH). We present a regional-zonal volumetric analysis alongside a visualization tool to compare and deconstruct visual rating scales. MATERIALS AND METHODS: 3D T1-weighted, T2-weighted spin-echo and FLAIR images were acquired on a 3T system, from 82 elderly participants in a population-based study. Images were automatically segmented for WMH...
November 10, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29132939/automated-brain-tissue-and-myelin-volumetry-based-on-quantitative-mr-imaging-with-various-in-plane-resolutions
#2
Christina Andica, Akifumi Hagiwara, Masaaki Hori, Misaki Nakazawa, Masami Goto, Saori Koshino, Koji Kamagata, Kanako K Kumamaru, Shigeki Aoki
BACKGROUND AND PURPOSE: Segmented brain tissue volume and myelin volume can now be automatically calculated using the SyMRI, which is based on quantification of R1 and R2 relaxation rates and proton density. The aim of this study was to determine the validity of SyMRI brain tissue and myelin volumetry using various in-plane resolutions. METHODS: We scanned 10 healthy subjects on a 1.5 T MR scanner with in-plane resolutions of 0.8, 2.0, and 3.0mm. Two scans were performed for each resolution...
November 10, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29132938/endovascular-management-of-extracranial-occlusions-at-the-hyperacute-phase-of-stroke-with-tandem-occlusions
#3
Marc-Antoine Labeyrie, Vittorio Civelli, Peggy Reiner, Emmanuel Cognat, Armand Aymard, Annouk Bisdorff, Jean-Pierre Saint-Maurice, Emmanuel Houdart
BACKGROUND AND PURPOSE: The management of cervical artery occlusions in hyperacute stroke with tandem cervical/intracranial occlusions has not yet become standardized, especially when the circle of Willis is effective. METHODS: We retrospectively analyzed the safety and accuracy of current approaches to manage the cervical occlusion in consecutive patients with tandem occlusions addressed for intracranial mechanical thrombectomy(MT) in our department from January 2012 to May 2017...
November 10, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29038025/assessment-of-the-cervical-spine-denticulate-ligament-using-mri-volumetric-sequence-comparison-between-1-5-tesla-and-3-0-tesla
#4
Rafael Seragioli, Marcelo Novelino Simao, Gustavo Novelino Simao, Carlos Fernando P S Herrero, Marcello H Nogueira-Barbosa
BACKGROUND: Denticulate ligaments (DLs) are pial extensions on each side of the spinal cord, comprising about 20 to 21 pairs of fibrous structures connecting the dura mater to the spinal cord. These ligaments are significant anatomical landmarks in the surgical approach to intradural structures. To our knowledge, there is no previous study on the detection of DLs using MRI. METHODS: After IRB approval, we retrospectively evaluated 116 consecutive MRI scans of the cervical spine, using the volumetric sequence 3D COSMIC, 65 and 51 studies with 1...
October 14, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29032126/weekly-follow-up-of-acute-lesions-in-three-early-multiple-sclerosis-patients-using-mr-spectroscopy-and-diffusion
#5
Gabriel Kocevar, Claudio Stamile, Salem Hannoun, Jean-Amédée Roch, Françoise Durand-Dubief, Sandra Vukusic, François Cotton, Dominique Sappey-Marinier
OBJECT: Pathophysiological mechanisms underlying multiple sclerosis (MS) lesion formation, including inflammation, demyelination/remyelination and axonal damage, and their temporal evolution are still not clearly understood. To this end, three acute white matter lesions were monitored using a weekly multimodal magnetic resonance (MR) protocol. MATERIALS AND METHODS: Three untreated patients with early relapsing-remitting MS and one healthy control subject were followed weekly for two months...
October 13, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29030015/progressive-white-matter-demyelination-in-delayed-co-poisoning-encephalopathy
#6
LETTER
B Law-Ye, P Dodet, B Hermann, S Trunet, D Dormont, N Pyatigorskaya, D Leclercq
No abstract text is available yet for this article.
October 13, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28988940/dual-lumen-balloon-to-increase-onyx-venous-penetration-in-the-treatment-of-spinal-dural-arteriovenous-fistulas
#7
Felipe Padovani Trivelato, Marco Túlio Salles Rezende, Alexandre Cordeiro Ulhoa, Guilherme Seizem Nakiri, Daniel Giansante Abud
PURPOSE: Spinal dural arteriovenous fistulas (sDAVF) are the most common spinal vascular lesions. The arterialization of the recipient vein results in venous hypertension and chronic ischemia. Intravascular injection of acrylic glue in order to occlude the draining vein is the principle of endovascular treatment, but a significant portion of embolization procedures do not succeed. We present our initial experience of endovascular balloon augmented embolization of sDAVF using a dual-lumen balloon...
October 5, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28987274/radiation-dose-and-image-quality-of-computed-tomography-of-the-supra-aortic-arteries-a-comparison-between-single-source-and-dual-source-ct-scanners
#8
Luca Saba, Michele di Martino, Paolo Siotto, Michele Anzidei, Giovanni Maria Argiolas, Michele Porcu, Jasjit S Suri, Max Wintermark
PURPOSE: The purpose of this work was to compare the image quality and radiation dose delivered to patients during computed tomography (CT) angiography (CTA) of the supra-aortic arteries using two single-source (SS) and two dual-energy (DE) CT scanners. MATERIAL AND METHODS: In this retrospective study, 120 patients who underwent CTA of supra-aortic arteries were studied using four different types of CT scanners: a sixteen and forty-detector-row SS and two DE CT scanners...
October 5, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28970078/evaluation-of-cerebral-arterial-and-venous-system-in-tuberculous-meningitis
#9
Jayantee Kalita, Rajesh K Singh, Usha K Misra, Sunil Kumar
BACKGROUND: Central nervous system infection especially pyogenic results in cerebral venous sinus thrombosis. Tuberculous meningitis (TBM) although associated with infarctions but there is no comprehensive study evaluating the role of CVST contributing in infarction. PURPOSE: To evaluate cerebral arterial and venous system using MR angiography (MRA) and MR venography (MRV) in TBM, and correlate with clinical and MRI findings. MATERIALS AND METHODS: Consecutive patients with TBM were evaluated clinically and their consciousness was assessed by using Glasgow Coma scale...
September 29, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28965789/magnetic-resonance-spectroscopy-abnormalities-in-traumatic-brain-injury-a-meta-analysis
#10
Matthew Brown, Hediyeh Baradaran, Paul J Christos, Drew Wright, Ajay Gupta, Apostolos J Tsiouris
BACKGROUND AND PURPOSE: Despite traumatic brain injury (TBI) being common, evaluation with imaging remains challenging. Magnetic resonance spectroscopy (MRS) shows promise in detecting changes of brain metabolite concentrations following TBI; however, currently there are only small studies available without conclusive evidence of the technique's efficacy. The purpose of this systematic review and meta-analysis was to evaluate the association between TBI and MRS metabolite changes. MATERIALS & METHODS: A comprehensive literature search was performed looking for studies reporting brain metabolite concentrations in both TBI and control subjects...
September 28, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28964925/critical-carotid-bulb-stenosis-with-intraluminal-thrombus-importance-of-delayed-carotid-stenting
#11
LETTER
Anshu Mahajan, Gaurav Goel, Biplab Das
No abstract text is available yet for this article.
September 28, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28964924/pediatric-aortic-coarctation-discovered-during-endovascular-treatment-of-a-ruptured-intracranial-aneurysm
#12
LETTER
Federico Cagnazzo, Cyril Dargazanli, Thomas Roujeau, Daniel Mantilla, Vincent Costalat
No abstract text is available yet for this article.
September 28, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28964923/greater-occipital-nerve-mr-tractography-feasibility-and-anatomical-considerations
#13
Adrian Kastler, Arnaud Attye, Olivier Heck, Florence Tahon, Kamel Boubagra, Irène Tropes, Sylvie Grand, Alexandre Krainik
BACKGROUND AND PURPOSE: To assess the feasibility of greater occipital nerve (GON) tractography using a fully automated tractography technique on the whole-neck volume, in comparison with anatomical knowledge. METHODS: Healthy subjects were consecutively included in this study if they had no history or symptoms of headache or brain disorder. A 3T MRI scanner with a 32 channel head coil was used. The following parameters for Diffusion Weighed (DWI) were used: b value of 1000 s/mm(2), 32 directions, acquired voxel size: 2 mm isotropic...
September 28, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28923531/hippocampal-infarction-identification-of-three-new-types
#14
A Förster, M Al-Zghloul, P Eisele, H Wenz, J Böhme, C Groden, E Neumaier-Probst
BACKGROUND AND PURPOSE: Hippocampal infarction (HI) is common but yet still not comprehensively studied. In the present study, we aimed to identify novel HI patterns and to describe additional ischemic lesions outside the hippocampus to draw conclusions regarding the underlying vessel occlusion. METHODS: In 222 patients (mean age 69.9 (±13.6) years; 129 (58.1%) male, 93 (41.9%) female) with HI, diffusion-weighted images were analyzed with emphasis on HI patterns and associated ischemic lesions outside the hippocampus...
September 18, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28923530/transfer-of-stroke-patients-impairs-eligibility-for-endovascular-stroke-treatment
#15
Omid Nikoubashman, Franziska Pauli, Kolja Schürmann, Ahmed E Othman, Jan-Philipp Bach, Martin Wiesmann, Arno Reich
BACKGROUND: Many patients who are potentially eligible for endovascular stroke treatment (EST) receive intravenous rtPA in the closest stroke unit before being transferred to tertiary centres for EST. It has been shown that clinical outcome of transferred and EST-treated patients is comparable to that of patients with direct access to EST. We analysed clinical outcome of patients, who were transferred and eventually not treated due to clinical and/or radiological deterioration. METHODS: We retrospectively analysed our prospectively maintained stroke registry for patients who were transferred for stroke therapy...
September 18, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28923528/arterial-spin-labeling-hyperperfusion-in-rasmussen-s-encephalitis-is-it-due-to-focal-brain-inflammation-or-a-postictal-phenomenon
#16
Savith Kumar, Chinmay P Nagesh, Bejoy Thomas, Ashalatha Radhakrishnan, Ramshekhar N Menon, Chandrasekharan Kesavadas
BACKGROUND AND PURPOSE: The study evaluated the utility of arterial spin labeling (ASL) perfusion imaging in Rasmussen's encephalitis (RE). MATERIAL AND METHODS: The hospital electronic database was searched using the search words "encephalitis," "autoimmune encephalitis" and "Rasmussen's encephalitis" for the period of 1 Jan 2015 to 31 Jan 2017. Clinically diagnosed cases of RE for which epilepsy protocol magnetic resonance imaging (MRI) with perfusion imaging (ASL) performed on a 3T scanner were retrieved...
September 18, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28923529/can-mri-water-apparent-diffusion-coefficient-adc-value-discriminate-between-idiopathic-normal-pressure-hydrocephalus-alzheimer-s-disease-and-subcortical-vascular-dementia
#17
Adrien Goujon, Mehdi Mejdoubi, Yvonne Purcell, Rishika Banydeen, Sylvie Colombani, Alessandro Arrigo
Numerous similarities in MRI and clinical symptoms exist between Alzheimer's disease (AD), subcortical vascular dementia (sVD) and possible idiopathic normal pressure hydrocephalus (iHPN). The aim of this study is to explore mean apparent coefficient diffusion (ADC) difference between theses diseases in different periventricular and deep white matter areas, as compared to healthy controls. This retrospective study analyzed mean ADC values of 120 patients in normal appearing deep white matter and lenticular nuclei, frontal, caudate nuclei corpus and parietal periventricular and deep white matter areas INPH group showed significantly lower ADC than sVD group in frontal periventricular region (1567...
September 15, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28889937/metastatic-fusiform-aneurysms-from-atrial-myxoma-a-case-report-and-literature-review
#18
LETTER
J Castier, T Portella, F Ricolfi, P Thouant
No abstract text is available yet for this article.
September 7, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28867484/secondary-cerebral-abscess-of-an-ischemic-stroke-treated-by-thrombectomy
#19
LETTER
Adrien Guenego, Marie Rafiq, Caterina Michelozzi, Anne-Christine Januel, Jean-François Albucher, Jean-Christophe Sol, Philippe Tall, Christophe Cognard, Fabrice Bonneville
No abstract text is available yet for this article.
September 1, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28865922/prediction-of-hemorrhagic-transformation-after-acute-thrombolysis-following-major-artery-occlusion-using-relative-adc-ratio-a-retrospective-study
#20
N Shinoda, S Hori, K Mikami, T Bando, D Shimo, T Kuroyama, Y Kuramoto, M Matsumoto, O Hirai, Y Ueno
BACKGROUND: The relative apparent diffusion coefficient (ADC) ratio can be used to evaluate the extent of ischemia. We investigated the risk factors for, and correlation between, relative ADC ratio and hemorrhagic transformation (HT) after thrombolysis. METHODS: This single-center, retrospective study involved 105 patients with acute occlusion of the anterior circulation. Relative ADC ratio was calculated as the ratio of ADC pixel values, within the affected territory to ADC pixel values in the contralateral normal region...
September 1, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
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