Read by QxMD icon Read

Journal of Neuroradiology. Journal de Neuroradiologie

Mai-Lan Ho
Arterial spin labeling (ASL) is a magnetic resonance imaging perfusion technique that enables quantification of cerebral blood flow (CBF) without the use of intravenous gadolinium contrast. An understanding of the technical basis of ASL and physiologic variations in perfusion are important for recognizing normal variants and artifacts. Pathologic variations in perfusion can be seen in a number of disorders including acute and chronic ischemia, vasculopathy, vascular malformations, tumors, trauma, infection/inflammation, epilepsy, and dementia...
July 14, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Maki Umino, Masayuki Maeda, Yuichiro Ii, Hidekazu Tomimoto, Hajime Sakuma
No abstract text is available yet for this article.
July 14, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
G Trasimeni, F Laurino, D Lamusta, N Limbucci, S Mangiafico
We report a case in which navigation of the micro catheter (Headway 027) with the conventional single microwire technique became impossible because of the difficult intracranial vascular anatomy. In order to achieve access, we used two Terumo 012 inches micro guide-wires with a 45° angle inside a single micro catheter. The manoeuver was easy and can be reproduced in specific and challenging cases.
July 12, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
J Uthoff, F A De Stefano, K Panzer, B W Darbro, T S Sato, R Khanna, D E Quelle, D K Meyerholz, J Weimer, J C Sieren
BACKGROUND: This study explores whether objective, quantitative radiomic biomarkers derived from magnetic resonance (MR), positron emission tomography (PET), and computed tomography (CT) may be useful in reliably distinguishing malignant peripheral nerve sheath tumors (MPNST) from benign plexiform neurofibromas (PN). METHODS: A registration and segmentation pipeline was established using a cohort of NF1 patients with histopathological diagnosis of PN or MPNST, and medical imaging of the PN including MR and PET-CT...
June 26, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Binghu Jiang, Dongmei He, Liwen Zhang, Min Ye
BACKGROUND AND PURPOSE: It is not conclusive that magnetic resonance (MR)-based carotid atherosclerotic plaque assessment identifies high-risk features associated with cerebrovascular events. We aimed to systematically summarize the association of MR imaging (MRI)-determined intraplaque hemorrhage (IPH), lipid-rich necrotic core (LRNC), and thinning/rupture of the fibrous cap (TRFC) with subsequent ischemic events. MATERIALS AND METHODS: We performed a comprehensive literature search evaluating the association of MRI-based carotid plaque composition with ischemic outcomes...
June 18, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Sergio Nappini, Nicola Limbucci, Giuseppe Leone, Andrea Rosi, Leonardo Renieri, Arturo Consoli, Antonio Laiso, Iacopo Valente, Francesco Rosella, Riccardo Rosati, Salvatore Mangiafico
BACKGROUND: Recent trials established the efficacy of mechanical stent-retriever thrombectomy for treatment of stroke patients with large vessel occlusion (LVO) in the anterior circulation. However, stent-retriever thrombectomy may not accomplish successful recanalization in all patients. The aim of this study is to report the role of bail-out permanent stenting after failure of mechanical thrombectomy. METHODS: Among 430 patients included in a prospectively maintained database, we analysed 325 cases of anterior circulation LVO...
June 18, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
D Heidelberg, S Ronsin, F Bonneville, S Hannoun, C Tilikete, F Cotton
Ataxia is a neurodegenerative disease resulting from brainstem, cerebellar, and/or spinocerebellar tracts impairments. Symptoms onset could vary widely from childhood to late-adulthood. Autosomal cerebellar ataxias are considered as one of the most complex group in neurogenetics. In addition to their genetic heterogeneity, there is an important phenotypic variability in the expression of cerebellar impairment, complicating the genetic mutation research. A pattern recognition approach using brain MRI measures of atrophy, hyperintensities and iron-induced hypointensity of the dentate nuclei, could be therefore helpful in guiding genetic research...
June 18, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Elif Bulut, Abdulsamet Erden, Omer Karadag, Kader Karli Oguz, Seza Ozen
PURPOSE: To increase the knowledge of central nervous system (CNS) imaging features in deficiency of adenosine deaminase 2 (DADA2) by examining magnetic resonance imaging (MRI) studies of a relatively large number of patients. METHODS: We retrospectively examined neuroimages of 12 patients (7 male, 5 female) diagnosed with DADA2. The mean age of the patients at the time of initial brain MRI was 16.7±10.2 years. Seven patients (58.3%) fulfilled the classification criteria of polyarteritis nodosa...
June 15, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
A Pellerin, J Aguilar Garcia, A David, J Meyer, B Guyomarch Delasalle, S De Gaalon, E Auffray Calvier, H Desal, R Bourcier
We propose a new reliable transverse sinus stenosis (TSS) index based on magnetic resonance venography (MRV) for the diagnosis of idiopathic intracranial hypertension (IIH). Our quantitative semi-automatic measurement analysis based on segmentation and cross-sectional TS diameter from 48 IIH patients and controls matched for age and sex, had a good inter-observer agreement (κ=0.729) compared to a visual examination (κ=0.467). A cut-off point≥2 discriminate IIH patients from controls, with a sensitivity and specificity of 100%...
June 18, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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 21, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Xiangyan Chen, Wenjie Yang, Chiu Wing Chu, Ka Sing Wong, Thomas Wai Hong Leung
No abstract text is available yet for this article.
May 9, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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
Timo A Auer, Hanns-Christian Breit, Federico Marini, Mirjam Renovanz, Marc A Brockmann, Yasemin Tanyildizi
BACKGROUND: Response Assessment in Neuro-Oncology Criteria (RANO), are used to asses response to first-line treatment of glioblastoma (GBM). Differentiation between response and pseudoresponse under treatment with Bevacizumab (BVZ) remains challenging. This study evaluates ADC changes in patients with radiographic pseudoresponse under treatment with (BVZ). METHODS: Patients (n=40) with recurrent GBM under-treatment with BVZ underwent MRI before, two and four months after treatment with BVZ...
May 4, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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
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
Basile Kerleroux, Tobias Kober, Tom Hilbert, Maxence Serru, Jean Philippe, 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
Sheng-Feng Lin, Tzu-I Wu, Chia-Lang Fang, Jing-Er Lee
No abstract text is available yet for this article.
July 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Siang Hua Victor Chan, Yat Ming Peter Woo, Kai Sing Alain Wong, Kwong Yau Chan, Kar Ming Leung
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...
July 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 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 Io , no previous radiation, and 4 WHO IIIo pre-radiated recurrent tumors)...
July 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...
May 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"