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Journal of Neuroradiology. Journal de Neuroradiologie

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https://www.readbyqxmd.com/read/29758229/intraabdominal-and-pelvic-actinomycosis-in-association-with-posterior-reversible-encephalopathy-syndrome-pres-a-case-report
#1
LETTER
Sheng-Feng Lin, Tzu-I Wu, Chia-Lang Fang, Jing-Er Lee
We present the case of a 49-year-old female patient who presented weight loss of 16 kilograms in a year and right lower quadrant abdominal pain for two months. Explorations at hospitalization revealed multiple liver nodules and a mass in the uterus. Procedures included biopsy, abdominal hysterectomy, bilateral salpingo-oophorectomy, and adhesionlysis. The pathological findings confirmed intraabdominal hepatic and pelvic actinomycosis. On day 4 post-operation, the patient developed acute hypertension, generalized tonic-clonic seizure, and an episode of status epilepticus, which was controlled with anticonvulsant valproate...
May 11, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29753641/consistency-of-normalized-cerebral-blood-volume-values-in-glioblastoma-using-different-leakage-correction-algorithms-on-dynamic-susceptibility-contrast-magnetic-resonance-imaging-data-without-and-with-prebolus
#2
Dennis Hedderich, Anne Kluge, Thomas Pyka, Claus Zimmer, Jan S Kirschke, Benedikt Wiestler, Christine Preibisch
BACKGROUND AND PURPOSE: Several leakage correction algorithms for dynamic susceptibility contrast (DSC) magnetic resonance imaging (MRI)-based cerebral blood volume (CBV) measurement have been proposed, and combination with a preload of contrast agent is generally recommended. A single bolus application scheme would largely simplify and facilitate standardized clinical applications, while reducing contrast agent (CA) dose. The aim of this study was, therefore, to investigate whether appropriate leakage correction redundantizes prebolus application by comparing normalized DSC-based CBV (nCBV) measures of two consecutive CA boli...
May 10, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29752977/high-resolution-magnetic-resonance-vessel-wall-imaging-of-chronic-intracranial-internal-carotid-artery-occlusion
#3
LETTER
Xiang Yan Chen, Wen Jie Yang, Chiu Wing Chu, Ka Sing Wong, Thomas Wai Hong Leung
A 61-year-old woman was admitted due to right limb weakness and newly-diagnosed atrial fibrillation. Brain Magnetic Resonance Imaging and Magnetic Resonance Angiography showed progression of the infarcts and occlusion of part of the internal carotid artery (ICA) respectively. T1-weighted high-resolution magnetic resonance imaging (HRMRI) was conducted after 14 months of medical treatment, showing vessel wall thickness and enhancement that resembled the appearance of vasculitis. This case shows that HRMRI could characterize the morphology of luminal thrombi and vessel wall of chronic intracranial ICA occlusion, which provides a potential tool for investigating the aetiology of stroke due to ICA occlusions...
May 9, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29752976/can-dynamic-contrast-enhanced-mri-evaluate-vegf-expression-in-brain-glioma-an-mri-guided-stereotactic-biopsy-study
#4
Ningning Di, Wenna Cheng, Xingyue Jiang, Xinjiang Liu, Jinliang Zhou, Qian Xie, Zhihui Chu, Huacheng Chen, Bin Wang
PURPOSE: To investigate whether pharmacokinetic parameters derived from dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) can be used to evaluate vascular endothelial growth factor (VEGF) expression in brain glioma based on a point-to-point basis. MATERIALS AND METHODS: Forty-seven patients with treatment-naïve glioma received preoperative DCE-MRI before stereotactic biopsy. We histologically quantified VEGF from section of stereotactic biopsies, and co-registered biopsy locations with localized measurements of DCE-MRI parameters including volume transfer coefficient (Ktrans ), reverse reflux rate constant (Kep), extracellular extravascular volume fraction (Ve) and blood plasma volume (Vp)...
May 9, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29733920/evaluation-of-the-apparent-diffusion-coefficient-in-patients-with-recurrent-glioblastoma-under-treatment-with-bevacizumab-with-radiographic-pseudoresponse
#5
Timo A Auer, Hanns-Christian Breit, Federico Marini, Mirjam Renovanz, Marc A Brockmann, Yasemin Tanyildizi
No abstract text is available yet for this article.
May 4, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29733919/disruptions-of-brain-structural-network-in-end-stage-renal-disease-patients-with-long-term-hemodialysis-and-normal-appearing-brain-tissues
#6
Ming-Chung Chou, Chih-Hung Ko, Jer-Ming Chang, Tsyh-Jyi Hsieh
OBJECTIVE: End-stage renal disease (ESRD) patients on hemodialysis were demonstrated to exhibit silent and invisible white-matter alterations which would likely lead to disruptions of brain structural networks. Therefore, the purpose of this study was to investigate the disruptions of brain structural network in ESRD patients. MATERIALS AND METHODS: Thiry-three ESRD patients with normal-appearing brain tissues and 29 age- and gender-matched healthy controls were enrolled in this study and underwent both cognitive ability screening instrument (CASI) assessment and diffusion tensor imaging (DTI) acquisition...
May 4, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29733918/complication-rate-of-intraarterial-treatment-of-severe-cerebral-vasospasm-after-subarachnoid-hemorrhage-with-nimodipine-and-percutaneous-transluminal-balloon-angioplasty-worth-the-risk
#7
Daniela Adami, Joachim Berkefeld, Johannes Platz, Jürgen Konczalla, Waltraud Pfeilschifter, Stefan Weidauer, Marlies Wagner
BACKGROUND AND PURPOSE: Delayed cerebral ischemia (DCI) is a complication of aneurysmal subarachnoid hemorrhage (SAH). Arterial cerebral vasospasm (CVS) is discussed as the main pathomechanism for DCI. Due to positive effects of per os nimodipine, intraarterial nimodipine application is used in patients with DCI. Further, percutaneous transluminal balloon angioplasty (PTA) is applied in focal high-grade spasm of intracranial arteries. However, clinical benefits of those techniques are unconfirmed in randomized trials so far, and complications might occur...
May 4, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29733917/clinical-equivalence-assessment-of-t2-synthesized-pediatric-brain-magnetic-resonance-imaging
#8
Basile Kerleroux, Tobias Kober, Tom Hilbert, Maxence Serru, Dominique Sirinelli, Baptiste Morel
BACKGROUND AND PURPOSE: Automated synthetic magnetic resonance imaging (MRI) provides qualitative, weighted image contrasts as well as quantitative information from one scan and is well-suited for various applications such as analysis of white matter disorders. However, the synthesized contrasts have been poorly evaluated in pediatric applications. The purpose of this study was to compare the image quality of synthetic T2 to conventional turbo spin echo (TSE) T2 in pediatric brain MRI...
May 4, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29625155/speculation-on-the-naming-of-moyamoya-disease-letter-to-the-editor
#9
LETTER
Mari Mori, Naoko Kurokawa, Gordon Worley
No abstract text is available yet for this article.
April 3, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29625154/experimental-evaluation-of-the-neva-tm-thrombectomy-device-a-novel-stent-retriever-conceived-to-improve-efficacy-of-organized-clot-removal
#10
Paolo Machi, Arthur J Ulm, Gianmarco Bernava, Olivier Brina, Karl Olof Lovblad, Franck Jourdan
BACKGROUND AND PURPOSE: Stent retrievers are recognized as the most effective devices for intracranial thrombectomy. Although highly effective, such devices fail in clot removal when the brain vessel occlusion is due to organized, firm clots. The mechanism of failure is that during the retrieval, devices remain compressed by the organized clot and slide between it and the vessel wall without any removal effect. The aim of the current study is to present the preclinical evaluation of the Neva™ device, a novel stent retriever designed to improve the incorporation and removal of organized thrombi...
April 3, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29625153/brain-ct-perfusion-improves-intracranial-vessel-occlusion-detection-on-ct-angiography
#11
Marinus J Becks, Rashindra Manniesing, Jeroen Vister, Sjoert A H Pegge, Stefan C A Steens, Ewoud J van Dijk, Mathias Prokop, Frederick J A Meijer
BACKGROUND AND PURPOSE: To evaluate whether brain CT perfusion (CTP) aids in the detection of intracranial vessel occlusion on CT angiography (CTA) in acute ischemic stroke. MATERIALS AND METHODS: Medical-ethical committee of our hospital was obtained and informed consent was waived. Patients suspected of acute ischemic stroke who underwent non-contrast CT(NCCT), CTA and whole-brain CTP in our center in the year 2015 were included. Three observers with different levels of experience evaluated the imaging data of 110 patients for the presence or absence of intracranial arterial vessel occlusion with two strategies...
April 3, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29604325/characteristic-phase-distribution-in-the-white-matter-of-infants-on-phase-difference-enhanced-imaging
#12
Tesu Niwa, Tetsuya Yoneda, Masaharu Hayashi, Keiji Suzuki, Shuhei Shibukawa, Takashi Okazaki, Yutaka Imai
BACKGROUND AND PURPOSE: The infantile brain is continuously undergoing development. Non-invasive methods to assess the neurological development of infants are important for the early detection of abnormalities. Some microstructures in the brain have been demonstrated via phase difference-enhanced imaging (PADRE), which may reflect myelin-related microstructures. We aimed to assess the white matter (WM) signal distribution in infants using PADRE and compared it with that using T1-weighted images (T1WI) and diffusion tensor imaging (DTI) on magnetic resonance imaging (MRI)...
March 28, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29604324/effect-of-blood-t1-estimation-strategy-on-arterial-spin-labeled-cerebral-blood-flow-quantification-in-children-and-young-adults-with-kidney-disease
#13
Hua-Shan Liu, Abbas F Jawad, Nina Laney, Erum A Hartung, Susan L Furth, John A Detre
PURPOSE: To compare blood T1 estimation approaches used for quantifying cerebral blood flow (CBF) with arterial spin labeled (ASL) perfusion MRI in a developmental cohort of chronic kidney disease (CKD) patients with anemia and a control group. METHODS: 61 patients with CKD and 47 age-matched control subjects were studied. Blood T1 approaches included: (1) a fixed value, (2) estimation based on measured hematocrit (Hct), and (3) estimation based on Age+Sex using a published formula...
March 28, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29544998/evaluation-of-safety-efficacy-and-clinical-outcome-after-endovascular-treatment-of-aneurysmal-subarachnoid-hemorrhage-in-coil-first-setting-a-10-year-series-from-a-single-center
#14
Muhammad AlMatter, Pervinder Bhogal, Marta Aguilar Pérez, Victoria Hellstern, Hansjörg Bäzner, Oliver Ganslandt, Hans Henkes
INTRODUCTION: The endovascular treatment (EVT) of ruptured cerebral aneurysms has been widely adopted after the publication of the International Subarachnoid Aneurysm Trial. In this study, we sought to evaluate the safety and efficacy of the EVT for ruptured aneurysms based on 10-year series from a single center with coil-first strategy. METHODS: All patients with aneurysmal subarachnoid hemorrhage (aSAH) treated between 2007 and 2016 were retrospectively reviewed and divided according to initial treatment into an EVT and a microsurgical clipping (MSC) group...
March 12, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29524499/ct-angiography-for-one-year-follow-up-of-intracranial-aneurysms-treated-with-the-web-device-utility-in-evaluating-aneurysm-occlusion-and-web-compression-at-one-year
#15
Hélène Raoult, François Eugène, Anthony Le Bras, Géraldine Mineur, Béatrice Carsin-Nicol, Jean-Christophe Ferré, Jean-Yves Gauvrit
BACKGROUND AND PURPOSE: The WEB is an innovative flow disruption device for cerebral aneurysm embolization with rapidly expanding indications. Our purpose was to evaluate the diagnostic performance of computed tomography angiography (CTA) at 1-year follow-up of aneurysms treated with the WEB. MATERIALS AND METHODS: Between April 2014 and May 2016, the study prospectively included patients treated with the WEB at our institution, and followed up within 24hours by CTA and at 1year by CTA, time-of-flight magnetic resonance angiography (TOF MRA) and digital subtraction angiography (DSA)...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29524498/objective-evaluation-of-cerebrovascular-reactivity-for-acetazolamide-predicts-cerebral-hyperperfusion-after-carotid-artery-stenting-comparison-with-region-of-interest-methods
#16
Kouichi Misaki, Naoyuki Uchiyama, Anri Inaki, Seigo Kinuya, Iku Nambu, Tomoya Kamide, Masanao Mohri, Yasuhiko Hayashi, Mitsutoshi Nakada
BACKGROUND AND PURPOSE: Hemodynamic impairments are considered risk factors of cerebral hyperperfusion after carotid artery stenting (CAS); measurement by Single-photon emission computed tomography (SPECT) using a subjective region of interest (ROI) method lacks consistency and reproducibility. MATERIALS AND METHODS: The present study compared objective perfusion analysis (stereotactic extraction estimation [SEE] method) with the ROI method for preoperative SPECT to predict the hyperperfusion phenomenon (HPP) after CAS...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29524497/postoperative-in-stent-protrusion-is-an-important-predictor-of-perioperative-ischemic-complications-after-carotid-artery-stenting
#17
Mikiya Beppu, Yohei Mineharu, Hirotoshi Imamura, Hidemitsu Adachi, Chiaki Sakai, Shoichi Tani, Koichi Arimura, So Tokunaga, Nobuyuki Sakai
BACKGROUND AND PURPOSE: Although in-stent protrusion is a potential risk factor for thromboembolism following carotid artery stenting, the correlation between in-stent protrusion and postoperative ipsilateral stroke has not been well examined. MATERIALS AND METHODS: We retrospectively reviewed 342 consecutive carotid artery lesions in 319 patients who underwent carotid artery stenting between April 2008 and April 2015. After excluding cases with carotid artery dissection and acute occlusion, 301 lesions in total of 277 patients were included in the analysis...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29505842/radiotherapy-in-acromegaly-long-term-brain-parenchymal-and-vascular-magnetic-resonance-changes
#18
Laura Milanese, Chiara Martini, Carla Scaroni, Francesca Dassie, Filippo Ceccato, Alessandro Della Puppa, Luca Denaro, Giulia Bommarito, Valentina Citton, Mario Ermani, Pietro Maffei, Renzo Manara
BACKGROUND: Radiation therapy (RT) effectiveness on hormonal reduction is proven in acromegaly; however, collateral long-term effects are still undetermined. This transversal neuroimaging study on a large cohort of acromegalic patients aimed to investigate the rate of parenchymal and vascular changes after RT. MATERIALS AND METHODS: Thirty-six acromegalic patients underwent RT (RT+) after unsuccessful surgery and were compared to RT- acromegalic patients matched for age, gender, adenoma features, clinical and surgical history...
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29505841/evaluation-of-prospective-motion-correction-of-high-resolution-3d-t2-flair-acquisitions-in-epilepsy-patients
#19
Sjoerd B Vos, Caroline Micallef, Frederik Barkhof, Andrea Hill, Gavin P Winston, Sebastien Ourselin, John S Duncan
T2-FLAIR is the single most sensitive MRI contrast to detect lesions underlying focal epilepsies but 3D sequences used to obtain isotropic high-resolution images are susceptible to motion artefacts. Prospective motion correction (PMC) - demonstrated to improve 3D-T1 image quality in a pediatric population - was applied to high-resolution 3D-T2-FLAIR scans in adult epilepsy patients to evaluate its clinical benefit. Coronal 3D-T2-FLAIR scans were acquired with a 1mm isotropic resolution on a 3T MRI scanner...
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29505840/historadiological-correlations-in-high-grade-glioma-with-the-histone-3-3-g34r-mutation
#20
Julien Puntonet, Volodia Dangouloff-Ros, Raphaël Saffroy, Mélanie Pagès, Felipe Andreiuolo, Jacques Grill, Stéphanie Puget, Nathalie Boddaert, Pascale Varlet
BACKGROUND AND PURPOSE: Molecular alterations were recently added to the World Health Organization (WHO) 2016 classification of central nervous system (CNS) tumors. We correlated the histological and radiological features of G34R mutant high-grade gliomas, a recently described hemispheric and supratentorial glioma of children and young adults. MATERIALS AND METHODS: We performed a retrospective multicenter study on the histopathological and MRI results of 12 patients...
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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