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Journal of Neuroradiology. Journal de Neuroradiologie

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 publication of the ISAT. 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 centre with coil-first strategy. METHODS: All patients with aneurysmal subarachnoid haemorrhage (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
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 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 1 year by CTA, TOF MRA and DSA...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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 SPECT using a subjective 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. Preoperative resting asymmetry index (CBF ratio from the affected to unaffected hemisphere) and cerebrovascular reactivity (CVR) to acetazolamide were measured by N-isopropyl-p-[123 I]-iodoamphetamine SPECT using the SEE and ROI method in 84 patients...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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 of 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
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
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. Two expert neuroradiologists reviewed 40 scans without PMC and 40 with navigator-based PMC...
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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 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. RESULTS: All tumors were supratentorial...
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Ruma Madhu Sreedharan, R Sheelakumari, K M Anila, Chandrasekharan Kesavadas, Sanjeev V Thomas
No abstract text is available yet for this article.
March 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Najat Saddiki, Sophie Hennion, Romain Viard, Nassima Ramdane, Renaud Lopes, Marc Baroncini, William Szurhaj, Nicolas Reyns, Jean Pierre Pruvo, Christine Delmaire
PURPOSE: Medial lobe temporal structures and more specifically the hippocampus play a decisive role in episodic memory. Most of the memory functional magnetic resonance imaging (fMRI) studies evaluate the encoding phase; the retrieval phase being performed outside the MRI. We aimed to determine the ability to reveal greater hippocampal fMRI activations during retrieval phase. MATERIALS AND METHODS: Thirty-five epileptic patients underwent a two-step memory fMRI...
March 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Sang-Han Choi, Young-Bo Kim, Zang-Hee Cho
Here, we have employed recently developed super-resolution tractography using 7.0T-MRI to analyze the fine structures involved in thalamocortical connections, something that has proved difficult using conventional techniques. We detail a newly observed thalamocortical pathway connecting the anterior nucleus of the thalamus and the cingulate cortex not via the internal capsule but via the septal area. The observed pathway is believed to be a classical pathway of the Papez circuit but had not been previously identified...
February 20, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Chan Siang Hua Victor, Woo Yat Ming Peter, Wong Kai Sing Alain, Chan Kwong Yau, Leung Kar Ming
BACKGROUND AND PURPOSE: Intracranial aneurysms are a known but rare complication of radiotherapy (RT). We reviewed the angiographic and clinical outcomes of intracranial aneurysms following RT in patients with nasopharyngeal carcinoma (NPC), a malignancy endemic in Hong Kong. MATERIALS AND METHODS: The clinical, angiographic and laboratory data was collected for nine NPC patients harboring fifteen intracranial aneurysms following RT, diagnosed between 1st January 2000 and 31st December 2012...
February 20, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Ho Cheol Choi, Sung Eun Park, Dae Seob Choi, Hwa Seon Shin, Ji Eun Kim, Hye Young Choi, Mi Jung Park, Eun Ha Koh
BACKGROUND AND PURPOSE: Rupture of the extracranial carotid artery is a rare, but potentially disastrous event. We aimed to review the clinical presentations and radiologic findings of this entity and to evaluate the efficacy of endovascular treatment with covered stent graft. MATERIALS AND METHODS: Since January 2009, eight patients with extracranial carotid artery rupture received endovascular treatment with covered stent graft. We retrospectively reviewed their medical records and radiologic findings...
February 20, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Matthias Barral, Louis Lassalle, Cyril Dargazanli, Mikael Mazighi, Hocine Redjem, Raphael Blanc, Georges Rodesch, Bertrand Lapergue, Michel Piotin
INTRODUCTION: Mechanical thrombectomy for anterior circulation large vessel occlusion (LVO) improves functional outcome at three months. This therapeutic approach is the new gold standard, with a benefit being also observed in elderly patients. However, data are limited in this heterogeneous and fragile population. The objectives of this study were, first, to describe outcome after mechanical thrombectomy in a representative group of patients over 80. Second, to evaluate factors associated with a favorable functional outcome after thrombectomy for anterior circulation LVO in elderly patients (aged≥ 80 years)...
February 19, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Fernanda C Rueda-Lopes, Fernanda M C Pessôa, Gustavo Tukamoto, Fabíola Rachid Malfetano, Simone Batista Scherpenhuijzen, Soniza Alves-Leon, Emerson L Gasparetto
OBJECTIVE: The aim of our study was to detect functional changes in default-mode network of neuromyelitis optica (NMO) patients using resting-state functional magnetic resonance images and the evaluation of subcortical grey-matter structures volumes. MATERIALS AND METHODS: NMO patients (n = 28) and controls patients (N=19) were enrolled. We used the integrated registration and segmentation tool, part of FMRIB's Software Library (FSL) to segment subcortical structures including the thalamus, caudate nucleus, putamen, hippocampus and amygdalae...
February 19, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Bourcier Romain, Abed Diala, Piotin Michel, Redjem Hocine, Ferré Jean Christophe, Eugène François, Raoult Hélène, Mahmood Mirza, Chapot René, Desal Hubert, Nordmeyer Hannes
No abstract text is available yet for this article.
February 13, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Saif Afat, Carolin Brockmann, Omid Nikoubashman, Marguerite Muller, Kolja M Thierfelder, Wolfgang G Kunz, Ulrike Haberland, Marc A Brockmann, Konstantin Nikolaou, Martin Wiesmann, Ahmed E Othman
PURPOSE: To assess the diagnostic utility of different perfusion algorithms for the detection of angiographical arterial spasm. METHOD: During a 2-year period, 45 datasets from 29 patients (54.2±10,75y,20F) with suspected cerebral vasospasm after aneurysmal subarachnoid hemorrhage were included. Volume Perfusion CT (VPCT), Non-enhanced CT (NCT) and angiography were performed within 6hours post-ictus. Perfusion maps were generated using a maximum slope (MS) and a deconvolution-based approach (DC)...
February 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Zsolt Kulcsár, Paolo Machi, Karl Schaller, Karl Olof Lovblad, Philippe Bijlenga
Treatment of ruptured deep-seated arteriovenous malformations is challenging and associated with elevated risks. This is due to the proximity or involvement of critical brain structures and the specifically fine and delicate angioarchitecture of these lesions, making both endovascular and surgical access technically complicated. We present the advantages of a true combined, open surgical and endovascular transvenous approach in a hybrid operating room. The technique may overcome in part the difficulties and may improve safety and risk related concerns...
February 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Min Soo Kim, Sung Ho Park, Eun Suk Park, Jun Bum Park, Soon Chan Kwon, In Uk Lyo, Hong Bo Sim
PURPOSE: The purpose of this study was to verify changes in diffusion tensor imaging (DTI) factors in patients with brain metastases treated with stereotactic radiotherapy (SRT). We also investigated the impact of SRT on peritumoral volumes though the use of DTI. METHODS: A total of 28 patients with brain metastases who had undergone SRT between March 2014 and December 2015 were enrolled. Magnetic resonance imaging with DTI factors, such as fractional anisotropy (FA) and apparent diffusion tensor (ADC) value, was performed 1 day before the procedure and 3 months after the procedure...
February 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Jeremy Hofmeister, Zsolt Kulcsar, Gianmarco Bernava, Alain Pellaton, Hasan Yilmaz, Gorislav Erceg, Maria Isabel Vargas, Karl-Olof Lovblad, Paolo Machi
OBJECTIVE: Mechanical thrombectomy (MTB) is a treatment of reference for acute ischemic stroke due to large brain vessel occlusion but some concerns remain about its use in small distal branches. In the present study, we assessed the efficacy and the safety of distal MTB using the Catch Mini (CM) stent retriever. METHODS: We retrospectively reviewed a prospectively maintained database of all consecutive patients who underwent MTB for a distal intracranial occlusion with the Catch Mini device at our hospital...
February 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Vera C Keil, Bogdan Pintea, Gerrit H Gielen, Kanishka Hittatiya, Angeliki Datsi, Matthias Simon, Rolf Fimmers, Hans H Schild, Dariusch R Hadizadeh
BACKGROUND AND PURPOSE: Kinetic parameters of T1-weighted dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) are considered to be largely influenced by microvessel environment. This study was performed to explore the extent of this association for meningiomas. MATERIALS AND METHODS: DCE-MRI kinetic parameters (contrast agent transfer constants Ktrans and kep, volume fractions vp and ve) were determined in pre-operative 3T MRI of meningioma patients for later biopsy sites (19 patients; 15 WHO I, no previous radiation, and 4 WHO III pre-radiated recurrent tumors)...
February 1, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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