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Neuroradiology

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https://www.readbyqxmd.com/read/29128947/t2-based-mr-imaging-gradient-echo-or-susceptibility-weighted-imaging-in-midline-and-off-midline-intracranial-germ-cell-tumors-a-pilot-study
#1
Giovanni Morana, Cesar Augusto Alves, Domenico Tortora, Jonathan L Finlay, Mariasavina Severino, Paolo Nozza, Marcello Ravegnani, Marco Pavanello, Claudia Milanaccio, Mohamad Maghnie, Andrea Rossi, Maria Luisa Garrè
PURPOSE: The role of T2*-based MR imaging in intracranial germ cell tumors (GCTs) has not been fully elucidated. The aim of this study was to evaluate the susceptibility-weighted imaging (SWI) or T2* gradient echo (GRE) features of germinomas and non-germinomatous germ cell tumors (NGGCTs) in midline and off-midline locations. METHODS: We retrospectively evaluated all consecutive pediatric patients referred to our institution between 2005 and 2016, for newly diagnosed, treatment-naïve intracranial GCT, who underwent MRI, including T2*-based MR imaging (T2* GRE sequences or SWI)...
November 11, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29103145/increased-signal-intensity-within-glioblastoma-resection-cavities-on-fluid-attenuated-inversion-recovery-imaging-to-detect-early-progressive-disease-in-patients-receiving-radiotherapy-with-concomitant-temozolomide-therapy
#2
Luke A Perry, Panagiotis Korfiatis, Jay P Agrawal, Bradley J Erickson
PURPOSE: Our study tested the diagnostic accuracy of increased signal intensity (SI) within FLAIR MR images of resection cavities in differentiating early progressive disease (ePD) from pseudoprogression (PsP) in patients with glioblastoma treated with radiotherapy with concomitant temozolomide therapy. METHODS: In this retrospective study approved by our Institutional Review Board, we evaluated the records of 122 consecutive patients with partially or totally resected glioblastoma...
November 4, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29103144/correction-to-40th-european-society-of-neuroradiology-diagnostic-and-interventional-annual-meeting
#3
Diana Quiñones Tapia, Antonio Castellaccio, Francisco Gilo Arrojo, Ana Herrera Muñoz, Juan Viaño, Buenaventura Anciones, Eliseo Vañó
We note that the following data error was published in regard to patient numbers in the Results section 1.
November 4, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29090331/differentiation-of-grade-ii-iii-and-grade-iv-glioma-by-combining-t1-contrast-enhanced-brain-perfusion-imaging-and-susceptibility-weighted-quantitative-imaging
#4
Jitender Saini, Pradeep Kumar Gupta, Prativa Sahoo, Anup Singh, Rana Patir, Suneeta Ahlawat, Manish Beniwal, K Thennarasu, Vani Santosh, Rakesh Kumar Gupta
PURPOSE: MRI is a useful method for discriminating low- and high-grade glioma using perfusion MRI and susceptibility-weighted imaging (SWI). The purpose of this study is to evaluate the usefulness of T1-perfusion MRI and SWI in discriminating among grade II, III, and IV gliomas. METHODS: T1-perfusion MRI was used to measure relative cerebral blood volume (rCBV) in 129 patients with glioma (70 grade IV, 33 grade III, and 26 grade II tumors). SWI was also used to measure the intratumoral susceptibility signal intensity (ITSS) scores for each tumor in these patients...
October 31, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29085963/grading-system-for-migrated-lumbar-disc-herniation-on-sagittal-magnetic-resonance-imaging-an-agreement-study
#5
Y Ahn, T S Jeong, T Lim, J Y Jeon
PURPOSE: Migrated lumbar disc herniations (LDHs) in the sagittal plane are common. Disc migration grading can be applied as a useful measurement tool in the diagnosis, treatment, and outcome evaluation of migrated LDH. No study has evaluated the reliability of migrated LDH grading. We evaluated the reliability and functionality of the current magnetic resonance imaging (MRI) grading system for migrated LDH. METHODS: We assessed a six-level grading system developed based on sagittal MRI and graded according to the direction (rostral and caudal) and degree (low, high, and very high) of disc migration...
October 31, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29085967/hippocampal-gliosis-only-on-mr-imaging-represents-a-distinct-entity-in-epilepsy-patients
#6
Elke Hattingen, Simon Jonas Enkirch, Alina Jurcoane, Maximilian Kruse, Daniel Delev, Alexander Grote, Albert Becker
PURPOSE: The purpose of this study is to evaluate whether patients with drug-resistant mesial temporal lobe epilepsy (TLE) due to hippocampal "gliosis only" have different MRI features than those with hippocampal sclerosis (HS). Most TLE patients have HS corresponding to severe neuronal loss and gliosis, but a few have "gliosis only" without significant reduction of neuronal density. METHODS: We analyzed the morphology of cerebral 3 T MRIs (T1, T2, and FLAIR) of 103 patients with HS and 20 with "gliosis only" concerning hippocampal and amygdala aspect, volumes, and signal intensity (SI) using Fisher's exact test, Student's t test, and principal component analysis...
October 30, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29080918/ultra-high-resolution-ct-angiography-of-the-artery-of-adamkiewicz-a-feasibility-study
#7
Kunihiro Yoshioka, Ryoichi Tanaka, Hidenobu Takagi, Yuta Ueyama, Kei Kikuchi, Takuya Chiba, Kazumasa Arakita, Joanne D Schuijf, Yasuo Saito
PURPOSE: Preoperative identification of the artery of Adamkiewicz can help prevent postoperative spinal cord injury following thoracic and thoracoabdominal aortic repair. Several studies have demonstrated the feasibility of evaluating the artery of Adamkiewicz using multi-detector row computed tomography (CT), but precise visualization remains a challenge. The present study was conducted to evaluate the usefulness of ultra-high-resolution CT for visualizing the artery of Adamkiewicz with a slice thickness of 0...
October 28, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29058047/recurrent-stenosis-following-carotid-artery-stenting-treated-with-a-drug-eluting-balloon-a-single-center-retrospective-analysis
#8
C Pohlmann, J Höltje, M Zeile, F Bonk, P P Urban, R Brüning
PURPOSE: Early in-stent restenosis after stent-protected angioplasty of the carotid artery (SPAC) is an infrequent, but potentially harmful condition for patients with carotid artery disease. METHODS: In our retrospective single-center analysis of 176 patients with carotid artery stenting between 2009 and 2015, using duplex ultrasound, we detected 9 patients with high-grade carotid artery in-stent restenosis. All restenosis patients were treated with a drug-eluting balloon (DEB) to prevent recurrent neointimal hyperplasia...
October 20, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28983769/temporal-lobe-epilepsy-due-to-meningoencephaloceles-into-the-greater-sphenoid-wing-a-consequence-of-idiopathic-intracranial-hypertension
#9
H Urbach, G Jamneala, I Mader, K Egger, S Yang, D Altenmüller
PURPOSE: Antero-inferior temporal lobe meningoencephaloceles are a rare, but increasingly recognized cause of drug-resistant temporal lobe epilepsy (TLE). In order to evaluate whether these lesions are related to idiopathic intracranial hypertension (IIH), we analyzed clinical and MRI findings of a cohort of patients undergoing presurgical work-up. METHODS: Seizure onset in the anterior temporal lobe was proven by EEG electrodes in 22 patients, and in 21 patients, anterior temporal lobectomy (mostly with sparing of the hippocampus) was performed...
October 5, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28963573/added-value-of-multiphase-cta-imaging-for-thrombus-perviousness-assessment
#10
E M M Santos, C D d'Esterre, K M Treurniet, W J Niessen, M Najm, M Goyal, A M Demchuk, C B Majoie, B K Menon, H A Marquering
PURPOSE: Thrombus perviousness has been associated with favorable functional outcome in acute ischemic stroke (AIS) patients. Measuring thrombus perviousness on CTA may be suboptimal due to potential delay in contrast agent arrival in occluded arteries at the moment of imaging. Dynamic sequences acquired over time can potentially overcome this issue. We investigate if dynamic CTA has added value in assessing thrombus perviousness. METHODS: Prospectively collected image data of AIS patients with proven occlusion of the anterior or posterior circulation with thin-slice multi-phase CTA (MCTA) and non-contrast CT were co-registered (n = 221)...
September 30, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28942513/loco-regional-extensions-of-central-nervous-system-germ-cell-tumors-a-retrospective-radiological-analysis-of-100-patients
#11
Loïc Duron, Flavie Sadones, Philippe Thiesse, Cécile Cellier, Claire Alapetite, François Doz, Didier Frappaz, Hervé J Brisse
PURPOSE: The current staging system of central nervous system (CNS) germ cell tumors (GCT) includes a binary classification in "localized" or "metastatic" disease based on the absence or presence of leptomeningeal dissemination. Loco-regional tumor dissemination has been barely described whereas its accurate definition might be useful in terms of prognosis and treatment, especially for radiation therapy planning. Our purpose was therefore to describe MR patterns and prevalence of loco-regional extensions of these tumors...
September 23, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28879377/erratum-to-extended-diffusion-weighted-magnetic-resonance-imaging-with-two-compartment-and-anomalous-diffusion-models-for-differentiation-of-low-grade-and-high-grade-brain-tumors-in-pediatric-patients
#12
Delilah Burrowes, Jason R Fangusaro, Paige C Nelson, Bin Zhang, Nitin R Wadhwani, Michael N Rozenfeld, Jie Deng
No abstract text is available yet for this article.
September 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29080037/decaying-molar-tooth-sign-in-joubert-syndrome-and-related-disorders-is-correlated-to-a-displacement-of-the-corticospinal-tract
#13
LETTER
César Augusto Pinheiro Ferreira Alves, Suely Ferraciolli, Ciro Matsui, Leandro Tavares Lucato
No abstract text is available yet for this article.
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/29058048/craniospinal-fluid-hypotension-mimicking-arteriovenous-fistula-on-spinal-mri
#14
LETTER
Martinus J van Amerongen, Ewoud J van Dijk, Joost de Vries, Frederick J A Meijer
No abstract text is available yet for this article.
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/29046918/flow-diverter-treatment-of-cerebral-blister-aneurysms
#15
Russell Cerejo, Mark Bain, Seby John, Julian Hardman, Nina Moore, M Shazam Hussain, Gabor Toth
PURPOSE: Blood blister-like aneurysms (BBA) are small, friable, broad-based aneurysms that represent high risk for rerupture. Treatment of BBA is challenging, and may include surgical wrapping, clipping, multiple overlapping stents, and/or coiling. Flow diversion is a rapidly evolving treatment strategy for intracranial aneurysms, but the evidence for its use in cases of BBA is scarce. METHODS: A retrospective review of flow-diverter-treated, ruptured BBA cases at our tertiary care institution was undertaken...
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/29038865/multinodular-and-vacuolating-neuronal-tumor-in-an-adolescent-with-klinefelter-syndrome
#16
LETTER
Anne-Sophie M C Monté, Felice D'Arco, Laurens J L De Cocker
No abstract text is available yet for this article.
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/29018934/quantitative-susceptibility-mapping-of-the-motor-cortex-a-comparison-of-susceptibility-among-patients-with-amyotrophic-lateral-sclerosis-cerebrovascular-disease-and-healthy-controls
#17
Ji Young Lee, Young-Jun Lee, Dong Woo Park, Yoonho Nam, Seung Hyun Kim, Jinseok Park, Young Seo Kim, Hyun Young Kim, Ki-Wook Oh
PURPOSE: The purpose of this study was to investigate the differences in motor cortex susceptibility among patients with amyotrophic lateral sclerosis (ALS), cerebrovascular disease (CVD), and healthy controls using quantitative susceptibility mapping (QSM). METHODS: We retrospectively reviewed 78 QSM images from 26 patients with ALS, 26 age- and sex-matched patients with CVD, and 26 healthy controls. A region of interest was drawn in the hand lobule of both the motor cortexes and subcortical white matter...
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/28986653/pool-size-ratio-of-the-substantia-nigra-in-parkinson-s-disease-derived-from-two-different-quantitative-magnetization-transfer-approaches
#18
Paula Trujillo, Paul E Summers, Alex K Smith, Seth A Smith, Luca T Mainardi, Sergio Cerutti, Daniel O Claassen, Antonella Costa
PURPOSE: We sought to measure quantitative magnetization transfer (qMT) properties of the substantia nigra pars compacta (SNc) in patients with Parkinson's disease (PD) and healthy controls (HCs) using a full qMT analysis and determine whether a rapid single-point measurement yields equivalent results for pool size ratio (PSR). METHODS: Sixteen different MT-prepared MRI scans were obtained at 3 T from 16 PD patients and eight HCs, along with B1, B0, and relaxation time maps...
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/28986614/clinical-and-angiographic-outcomes-in-patients-with-intracranial-aneurysms-treated-with-the-pipeline-embolization-device-intra-procedural-technical-difficulties-major-morbidity-and-neurological-mortality-decrease-significantly-with-increased-operator-experience
#19
Josser E Delgado Almandoz, Yasha Kayan, Andrea Tenreiro, Adam N Wallace, Jill M Scholz, Jennifer L Fease, Anna M Milner, Maximilian Mulder, Kyle M Uittenbogaard, Oscar Tenreiro-Picón
PURPOSE: Flow diversion constitutes a pivotal advancement in endovascular intracranial aneurysm treatment, but requires development of a new skill set. The aim of this study is to determine whether outcomes after treatment with the Pipeline Embolization Device improve with experience. METHODS: We retrospectively reviewed all patients with intracranial aneurysms treated with Pipeline at two centers over a 4.5-year period. Baseline patient and aneurysm characteristics, complications, and angiographic outcomes were analyzed...
December 2017: Neuroradiology
https://www.readbyqxmd.com/read/28942520/follow-up-of-pineal-cysts-in-children-is-it-necessary
#20
Miro-Pekka Jussila, Päivi Olsén, Niina Salokorpi, Maria Suo-Palosaari
PURPOSE: Pineal cysts are common incidental findings in children undergoing magnetic resonance imaging (MRI). Several studies have suggested MRI follow-up if the cyst is larger than 10 mm. However, cysts do not usually change during follow-up. Prevalence, growth, and structure of the pineal cysts were analyzed to decide if follow-up MRI is necessary. METHODS: A retrospective review between 2010 and 2015 was performed using 3851 MRI examinations of children aged 0-16 years to detect pineal cysts having a maximum diameter ≥ 10 mm...
December 2017: Neuroradiology
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