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Neuroradiology

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https://www.readbyqxmd.com/read/30022231/comparison-of-field-of-view-optimized-and-constrained-undistorted-single-shot-diffusion-weighted-imaging-and-conventional-diffusion-weighted-imaging-of-optic-nerve-and-chiasma-at-3t
#1
Yuan Tian, Junqing Wang, Mingge Li, Xin Lou, Jing Tang, Quangang Xu, Yingkui Zhang, Shihui Wei, Lin Ma
PURPOSE: Single-shot echo-planar imaging is the conventional diffusion-weighted imaging (C-DWI) sequence for evaluating orbital disease. However, its utility is restricted in small organs like the chiasma and optic nerve. This study was conducted to investigate the utility of field-of-view optimized and constrained undistorted single-shot diffusion-weighted imaging (FOCUS-DWI) for evaluating the chiasma and optic nerve in acute optic neuritis, making comparisons with C-DWI. METHODS: FOCUS-DWI and C-DWI were performed on 36 acute optic neuritis patients and 16 normal controls...
July 19, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29978300/reversible-cerebral-vasoconstriction-complicating-cerebral-atherosclerotic-vascular-disease-in-schimke-immuno-osseous-dysplasia
#2
LETTER
Mariasavina Severino, Thea Giacomini, Enrico Verrina, Giulia Prato, Andrea Rossi
No abstract text is available yet for this article.
July 6, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29974142/normal-development-of-sacrococcygeal-centrum-ossification-centers-in-the-fetal-spine-a-postmortem-magnetic-resonance-imaging-study
#3
Nan Jian, Mi-Mi Tian, Lian-Xiang Xiao, Hui Zhao, Yan Shi, Guan Li, Shuai Zhang, Xiang-Tao Lin
PURPOSE: To describe the temporal pattern of the appearance of the S1-Co1 centrum ossification centers (COCs) and provide reference data for the S1-S5 COCs and sacral length at various gestational ages (GAs). METHODS: Postmortem magnetic resonance imaging (MRI) was performed on 71 fetuses (GA, 17-42 weeks) using the 3D dual-echo steady-state with water excitation T2 sequence in the sagittal plane. To confirm the reliability of this sequence, the MRI data were compared with the CT and histologic data obtained from two fetuses (GAs, 21 and 30 weeks)...
July 4, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29968073/pseudo-continuous-arterial-spin-labeling-mr-images-in-warthin-tumors-and-pleomorphic-adenomas-of-the-parotid-gland-qualitative-and-quantitative-analyses-and-their-correlation-with-histopathologic-and-dwi-and-dynamic-contrast-enhanced-mri-findings
#4
Tatsuya Yamamoto, Hirohiko Kimura, Kuniyoshi Hayashi, Yoshiaki Imamura, Masaki Mori
PURPOSE: We investigated the correlation between tumor blood flow (TBF) and histopathologic features of Warthin tumors (WTs) and pleomorphic adenomas (PAs) to determine the TBF in the differential diagnosis of these tumors and evaluated how well pCASL-MRI can differentiate PAs from WTs compared to conventional MRI. METHODS: The ADC, time intensity curve (TIC) pattern of dynamic contrast enhancement, and pCASL (visual assessment and TBF of the MR images of 10 WTs and 13 PAs) were reviewed...
July 2, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29961088/should-you-stop-wearing-neckties-wearing-a-tight-necktie-reduces-cerebral-blood-flow
#5
Robin Lüddecke, Thomas Lindner, Julia Forstenpointner, Ralf Baron, Olav Jansen, Janne Gierthmühlen
PURPOSE: Negative cerebrovascular effects can be expected by compressing jugular veins and carotids by a necktie. It was already demonstrated that a necktie increases intraocular pressure. In many professions, a special dress code including a necktie and a collared shirt is mandatory although little is known about the effect of this "socially desirable strangulation." METHODS: In this study, the effect of wearing a necktie concerning cerebral blood flow and jugular venous flow by magnetic resonance imaging...
June 30, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29959462/symptomatic-periprocedural-intracranial-hemorrhage-unrelated-to-coil-embolization-in-1287-patients-with-intracranial-aneurysms
#6
Haowen Xu, Li Wang, Sheng Guan, Dongdong Li, Tao Quan
PURPOSE: Periprocedural symptomatic intracranial hemorrhage (sICH) unrelated to coil embolization of intracranial aneurysm has been rarely reported. The incidence and characteristics of this complication remain unclear. This study was designed to elucidate the incidence and characteristics of periprocedural sICH unrelated to coiling of intracranial aneurysm, and to explore the possible mechanisms underlying this complication. METHODS: Included in this retrospective study were 1287 patients with 1394 aneurysms who were treated with coil embolization (476 patients with stent assistance and 811 patients without stents) between May 2008 and August 2017...
June 29, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29915915/post-embolization-neurological-syndrome-after-embolization-for-intracranial-and-skull-base-tumors-transient-exacerbation-of-neurological-symptoms-with-inflammatory-responses
#7
Yujiro Tanaka, Takao Hashimoto, Daisuke Watanabe, Hirofumi Okada, Daichi Kato, Shigeru Aoyagi, Jiro Akimoto, Michihiro Kohno
PURPOSE: Pre-operative embolization is an effective treatment strategy for hypervascular intracranial and skull base tumors. However, neurological complications resulting from tumor swelling, cranial nerve ischemia, or hemorrhage can occur after embolization. The purpose of this study was to examine the relationship between neurological complications following pre-operative embolization and minor adverse events including fever, headache, or increasing inflammation, which are common after embolization for abdominal tumors (i...
June 18, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29909560/rhinencephalon-changes-in-tuberous-sclerosis-complex
#8
Renzo Manara, Davide Brotto, Samuela Bugin, Maria Federica Pelizza, Stefano Sartori, Margherita Nosadini, Sara Azzolini, Giorgio Iaconetta, Cecilia Parazzini, Alessandra Murgia, Angela Peron, Paola Canevini, Francesca Labriola, Aglaia Vignoli, Irene Toldo
PURPOSE: Despite complex olfactory bulb embryogenesis, its development abnormalities in tuberous sclerosis complex (TSC) have been poorly investigated. METHODS: Brain MRIs of 110 TSC patients (mean age 11.5 years; age range 0.5-38 years; 52 female; 26 TSC1, 68 TSC2, 8 without mutation identified in TSC1 or TSC2, 8 not tested) were retrospectively evaluated. Signal and morphological abnormalities consistent with olfactory bulb hypo/aplasia or with olfactory bulb hamartomas were recorded...
June 17, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29947942/what-is-the-role-of-vertebral-augmentation-for-osteoporotic-fractures-a-review-of-the-recent-literature
#9
REVIEW
Stefano Marcia, Mario Muto, Joshua A Hirsch, Ronil V Chandra, Nicole Carter, Paola Crivelli, Emanuele Piras, Luca Saba
PURPOSE: Vertebral augmentation procedures such as vertebroplasty and kyphoplasty are utilized in the treatment of vertebral compression fractures (VCFs). However, their capacity for providing analgesia, reducing disability, and improving quality of life in patients with osteoporotic VCFs remains a topic of debate. The objective of this narrative review is to summarize the latest evidence for the safety and efficacy of vertebral augmentation for osteoporotic vertebral compression fractures (VCFs)...
June 13, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29947941/verification-of-bleeding-points-in-carotid-blowout-syndrome-using-guidewire-manipulation
#10
Chao-Bao Luo, Yuang-Seng Tsuei, Feng-Chi Chang, Ta-Wei Ting
PURPOSE: Carotid blowout syndrome (CBS) is a catastrophic complication of aggressive treatment of head and neck cancer. Early detection of bleeding points with embolization is a life-saving procedure; however, some bleeding points may be difficult to identify. Our aim was to determine whether guidewire manipulation (GWM) could be used to verify bleeding point locations in patients with CBS. METHODS: Of the 92 patients with CBS referred for embolization in a 5-year period, 14 men and one woman (mean age 58 years) had bleeding points at locations that could not be definitely determined...
June 11, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29766237/correction-to-stent-placement-in-patients-with-acute-subarachnoid-haemorrhage-when-is-it-justified
#11
Andrew G Murchison, Victoria Young, Tanja Djurdjevic, Martino Cellerini, Rufus Corkill, Wilhelm Küker
In the original version of this article one author name was published incorrectly: Tanja Ddjurdjevic has been corrected to Tanja Djurdjevic.
May 16, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29761220/transcriptomic-analysis-of-the-harvested-endothelial-cells-in-a-swine-model-of-mechanical-thrombectomy
#12
Nasren Jaff, Rikard Grankvist, Lars Muhl, Arvin Chireh, Mikael Sandell, Stefan Jonsson, Fabian Arnberg, Ulf Eriksson, Staffan Holmin
PURPOSE: In mechanical thrombectomy (MT) for ischemic stroke, endothelial cells (ECs) from intracranial blood vessels adhere to the stent retriever device and can be harvested. However, understanding the molecular biology and the role of the endothelium in different pathological conditions remains insufficient. The purpose of the study was to characterize and analyze the molecular aspect of harvested ECs using cell culture and transcriptomic techniques in an MT swine model relevant to clinical ischemic stroke...
May 14, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29752489/cerebral-venous-thrombosis-state-of-the-art-diagnosis-and-management
#13
REVIEW
Adam A Dmytriw, Jin Soo A Song, Eugene Yu, Colin S Poon
PURPOSE: This review article aims to discuss the pathophysiology, clinical presentation, and neuroimaging of cerebral venous thrombosis (CVT). Different approaches for diagnosis of CVT, including CT/CTV, MRI/MRV, and US will be discussed and the reader will become acquainted with imaging findings as well as limitations of each modality. Lastly, this exhibit will review the standard of care for CVT treatment and emerging endovascular options. METHODS: A literature search using PubMed and the MEDLINE subengine was completed using the terms "cerebral venous thrombosis," "stroke," and "imaging...
May 11, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29736618/leptomeningeal-form-of-immunoglobulin-g4-related-hypertrophic-meningitis-with-perivascular-spread-a-case-report-and-review-of-the-literature
#14
Jasmina Boban, Selin Ardalı, Majda M Thurnher
PURPOSE: Immunoglobulin G4 (IgG4)-related disease represents a spectrum of fibro-inflammatory disorders that affects various organ systems, including the central nervous system. METHODS: Here we present the case of lgG4-related hypertrophic meningitis with exclusively leptomeningeal involvement and spread via perivascular spaces. RESULTS: A 58-year-old male patient presented with complex partial seizures. Initial computed tomography examination showed left frontal sulcal hyperdensity...
May 7, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29725694/small-high-signal-lesions-posterior-to-the-intracranial-vertebral-artery-incidentally-identified-by-3d-flair-retrospective-study-of-127-patients
#15
Ryota Kogue, Masayuki Maeda, Maki Umino, Kazuhiro Tsuchiya, Hajime Sakuma
PURPOSE: A small, benign high-signal lesion (HSL) posterior to the intracranial vertebral artery (VA) at the foramen magnum is a new entity revealed by a 3D FLAIR sequence. However, this entity has not been sufficiently investigated. We aimed to investigate the MR imaging findings of HSLs posterior to the intracranial VA that were incidentally detected by 3D FLAIR. METHODS: We retrospectively evaluated 3717 patients using a 3-T MR unit. HSLs on 3D FLAIR were assessed for prevalence, size, contact with the spinal accessory nerve (SAN), and size changes on follow-up images...
May 3, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29721578/circumventricular-organs-of-human-brain-visualized-on-post-contrast-3d-fluid-attenuated-inversion-recovery-imaging
#16
Minako Azuma, Toshinori Hirai, Yoshihito Kadota, Zaw Aung Khant, Yohei Hattori, Mika Kitajima, Hiroyuki Uetani, Yasuyuki Yamashita
PURPOSE: Although contrast-enhanced three-dimensional T2 fluid-attenuated inversion recovery (3D T2-FLAIR) images are useful for assessing various neuronal diseases, physiological enhancement of the circumventricular organs on the images have not been investigated. We aimed to assess the physiological appearance of the circumventricular organs on contrast-enhanced 3D T2-FLAIR images. METHODS: We studied 3-T MR images of the brain of 30 individuals with no apparent brain abnormalities...
May 2, 2018: Neuroradiology
https://www.readbyqxmd.com/read/30003293/portuguese-neuroradiology-society-sociedade-portuguesa-de-neurorradiologia-spnr-xiii-annual-congress-may-31st-to-june-6th-2017
#17
(no author information available yet)
No abstract text is available yet for this article.
August 2018: Neuroradiology
https://www.readbyqxmd.com/read/29869697/magnetic-resonance-imaging-of-tuberous-sclerosis-complex-with-or-without-epilepsy-at-7-t
#18
Kaibao Sun, Jianfei Cui, Bo Wang, Tao Jiang, Zhongwei Chen, Fei Cong, Yan Zhuo, Shuli Liang, Rong Xue, Xinguang Yu, Lin Chen
PURPOSE: This study was conducted to determine the benefit of magnetic resonance imaging (MRI) at 7 T in detecting structural lesions and previously unidentified abnormalities in patients with tuberous sclerosis complex (TSC). METHODS: Thirteen patients with TSC (8-36 years, seven males) previously diagnosed by 3 T MRI underwent additional imaging at 7 T, which included T1-weighted magnetization-prepared rapid gradient-echo (MPRAGE), T2-weighted turbo spin echo (TSE), SPACE fluid attenuated inversion recovery (FLAIR), susceptibility weighted imaging (SWI), white matter suppressed (WM-suppressed), and gray-white matter tissue border enhancement (GW-TBE) MPRAGE sequences...
August 2018: Neuroradiology
https://www.readbyqxmd.com/read/29862413/quantitative-sodium-imaging-and-gliomas-a-feasibility-study
#19
Lucidio P Nunes Neto, Guillaume Madelin, Terlika Pandit Sood, Chih-Chun Wu, Douglas Kondziolka, Dimitris Placantonakis, John G Golfinos, Andrew Chi, Rajan Jain
PURPOSE: Recent advances in sodium brain MRI have allowed for increased signal-to-noise ratio, faster imaging, and the ability of differentiating intracellular from extracellular sodium concentration, opening a new window of opportunity for clinical application. In gliomas, there are significant alterations in sodium metabolism, including increase in the total sodium concentration and extracellular volume fraction. The purpose of this study is to assess the feasibility of using sodium MRI quantitative measurements to evaluate gliomas...
August 2018: Neuroradiology
https://www.readbyqxmd.com/read/29808347/cerebral-aneurysm-rebleed-with-ventricular-breakthrough-captured-by-four-dimensional-ct-angiography
#20
LETTER
Wulphert Venderink, Frank van Megen, Joost de Vries, Frederick J A Meijer
No abstract text is available yet for this article.
July 2018: Neuroradiology
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