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Neuroradiology

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https://www.readbyqxmd.com/read/28401260/stent-assisted-coiling-of-wide-neck-bifurcation-aneurysms-with-a-branch-incorporated-in-the-aneurysm-base-long-term-follow-up-in-49-patients-with-53-aneurysms
#1
Boris Lubicz, Ricardo Morais, Pierre-Julien Bruyère, Noémie Ligot, Benjamin Mine
PURPOSE: Wide-neck bifurcation intracranial aneurysms (WNBA) with a branch incorporated in the aneurysm base remain difficult to treat by embolization. We aim to report our long-term follow-up of stent-assisted coiling (SAC) in this subgroup of patients. METHODS: This study was approved by our local ethical committee. A retrospective review of our prospectively maintained database identified all patients treated in our institution by SAC for a WNBA with a branch incorporated in the aneurysm base...
April 11, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28397019/intra-arterial-high-signals-on-arterial-spin-labeling-perfusion-images-predict-the-occluded-internal-carotid-artery-segment
#2
Shu Sogabe, Junichiro Satomi, Yoshiteru Tada, Yasuhisa Kanematsu, Kazuyuki Kuwayama, Kenji Yagi, Shotaro Yoshioka, Yoshifumi Mizobuchi, Hideo Mure, Izumi Yamaguchi, Takashi Abe, Nobuaki Yamamoto, Keiko T Kitazato, Ryuji Kaji, Masafumi Harada, Shinji Nagahiro
PURPOSE: Arterial spin labeling (ASL) involves perfusion imaging using the inverted magnetization of arterial water. If the arterial arrival times are longer than the post-labeling delay, labeled spins are visible on ASL images as bright, high intra-arterial signals (IASs); such signals were found within occluded vessels of patients with acute ischemic stroke. The identification of the occluded segment in the internal carotid artery (ICA) is crucial for endovascular treatment. We tested our hypothesis that high IASs on ASL images can predict the occluded segment...
April 10, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28389783/erratum-to-correlation-between-pathology-and-neuromelanin-mr-imaging-in-parkinson-s-disease-and-dementia-with-lewy-bodies-notice-of-redundant-publication
#3
Shinichiro Kitao, Eiji Matsusue, Shinya Fujii, Fuminori Miyoshi, Toshio Kaminou, Shinsuke Kato, Hisao Ito, Toshihide Ogawa
No abstract text is available yet for this article.
April 7, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28386689/corpus-callosum-involvement-a-useful-clue-for-differentiating-fabry-disease-from-multiple-sclerosis
#4
Sirio Cocozza, Gaia Olivo, Eleonora Riccio, Camilla Russo, Giuseppe Pontillo, Lorenzo Ugga, Silvia Migliaccio, Dario de Rosa, Sandro Feriozzi, Massimiliano Veroux, Yuri Battaglia, Daniela Concolino, Federico Pieruzzi, Antonino Tuttolomondo, Aurelio Caronia, Cinzia Valeria Russo, Roberta Lanzillo, Vincenzo Brescia Morra, Massimo Imbriaco, Arturo Brunetti, Enrico Tedeschi, Antonio Pisani
PURPOSE: Multiple sclerosis (MS) has been proposed as a possible differential diagnosis for Fabry disease (FD). The aim of this work was to evaluate the involvement of corpus callosum (CC) on MR images and its possible role as a radiological sign to differentiate between FD and MS. METHODS: In this multicentric study, we retrospectively evaluated the presence of white matter lesions (WMLs) on the FLAIR images of 104 patients with FD and 117 patients with MS. The incidence of CC-WML was assessed in the two groups and also in a subgroup of 37 FD patients showing neurological symptoms...
April 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28386688/beyond-the-midbrain-atrophy-wide-spectrum-of-structural-mri-finding-in-cases-of-pathologically-proven-progressive-supranuclear-palsy
#5
REVIEW
Keita Sakurai, Aya M Tokumaru, Keigo Shimoji, Shigeo Murayama, Kazutomi Kanemaru, Satoru Morimoto, Ikuko Aiba, Motoo Nakagawa, Yoshiyuki Ozawa, Masashi Shimohira, Noriyuki Matsukawa, Yoshio Hashizume, Yuta Shibamoto
PURPOSE: Recently, it has been recognized that pathologically proven progressive supranuclear palsy (PSP) cases are classified into various clinical subtypes with non-uniform symptoms and imaging findings. This article reviews essential imaging findings, general information, and advanced magnetic resonance imaging (MRI) techniques for PSP and presents these MRI findings of pathologically proven typical and atypical PSP cases for educational purposes. METHODS: With the review of literatures, notably including atypical pathologically proven PSP cases, MRI and clinical information of 15 pathologically proven typical and atypical PSP cases were retrospectively evaluated...
April 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28386687/abnormal-metabolic-brain-network-associated-with-parkinson-s-disease-replication-on-a-new-european-sample
#6
Petra Tomše, Luka Jensterle, Marko Grmek, Katja Zaletel, Zvezdan Pirtošek, Vijay Dhawan, Shichun Peng, David Eidelberg, Yilong Ma, Maja Trošt
PURPOSE: The purpose of this study was to identify the specific metabolic brain pattern characteristic for Parkinson's disease (PD): Parkinson's disease-related pattern (PDRP), using network analysis of [18F]-fluorodeoxyglucose positron emission tomography (FDG-PET) brain images in a cohort of Slovenian PD patients. METHODS: Twenty PD patients (age 70.1 ± 7.8 years, Movement Disorder Society Unified Parkinson's Disease Motor Rating Scale (MDS-UPDRS-III) 38.3 ± 12...
April 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28382501/the-structural-connectome-in-children-basic-concepts-how-to-build-it-and-synopsis-of-challenges-for-the-developing-pediatric-brain
#7
REVIEW
Avner Meoded, Thierry A G M Huisman, Maria Grazia Sacco Casamassima, George I Jallo, Andrea Poretti
PURPOSE: The structural connectome is a comprehensive structural description of the network of elements and connections forming the brain. In recent years, this framework has progressively been used to investigate the pediatric brain. METHODS: We discuss the different steps and emphasize key technical aspects required for the successful reconstruction, analysis, and visualization of the pediatric structural connectome using current state-of-the-art neuroimaging and post-processing techniques...
April 5, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28364138/erratum-to-oculo-auriculo-vertebral-spectrum-going-beyond-the-first-and-second-pharyngeal-arch-involvement
#8
Davide Brotto, Renzo Manara, Sara Ghiselli, Elisa Lovo, Rodica Mardari, Irene Toldo, Alessandro Castiglione, Giovanni Schifano, Valentina Stritoni, Roberto Bovo, Patrizia Trevisi, Alessandro Martini
No abstract text is available yet for this article.
March 31, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28364137/hypoattenuation-on-cta-images-with-large-vessel-occlusion-timing-affects-conspicuity
#9
Prasham Dave, Cheemun Lum, Rebecca Thornhill, Santanu Chakraborty, Dar Dowlatshahi
PURPOSE: Parenchymal hypoattenuation distal to occlusions on CTA source images (CTASI) is perceived because of the differences in tissue contrast compared to normally perfused tissue. This difference in conspicuity can be measured objectively. We evaluated the effect of contrast timing on the conspicuity of ischemic areas. METHODS: We collected consecutive patients, retrospectively, between 2012 and 2014 with large vessel occlusions that had dynamic multiphase CT angiography (CTA) and CT perfusion (CTP)...
March 31, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28361345/altered-structural-connectivity-of-pain-related-brain-network-in-burning-mouth-syndrome-investigation-by-graph-analysis-of-probabilistic-tractography
#10
Akihiko Wada, Takashi Shizukuishi, Junko Kikuta, Haruyasu Yamada, Yusuke Watanabe, Yoshiki Imamura, Takahiro Shinozaki, Ko Dezawa, Hiroki Haradome, Osamu Abe
PURPOSE: Burning mouth syndrome (BMS) is a chronic intraoral pain syndrome featuring idiopathic oral pain and burning discomfort despite clinically normal oral mucosa. The etiology of chronic pain syndrome is unclear, but preliminary neuroimaging research has suggested the alteration of volume, metabolism, blood flow, and diffusion at multiple brain regions. According to the neuromatrix theory of Melzack, pain sense is generated in the brain by the network of multiple pain-related brain regions...
March 30, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28361344/cerebral-aneurysms-and-metastases-occurring-as-a-delayed-complication-of-resected-atrial-myxoma-imaging-findings-including-high-resolution-vessel-wall-mri
#11
LETTER
Ajay P Asranna, Praveen Kesav, Chinmay Nagesh, Sapna Erat Sreedharan, C Kesavadas, P N Sylaja
No abstract text is available yet for this article.
March 30, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28357461/association-between-proximal-internal-carotid-artery-steno-occlusive-disease-and-diffuse-wall-thickening-in-its-petrous-segment-a-magnetic-resonance-vessel-wall-imaging-study
#12
Xiaoyi Chen, Huilin Zhao, Zhensen Chen, Huiyu Qiao, Yuanyuan Cui, Dongye Li, Zechen Zhou, Le He, Rui Li, Chun Yuan, Xihai Zhao
PURPOSE: Significant stenosis or occlusion in carotid arteries may lead to diffuse wall thickening (DWT) in the arterial wall of downstream. This study aimed to investigate the correlation between proximal internal carotid artery (ICA) steno-occlusive disease and DWT in ipsilateral petrous ICA. METHODS: Symptomatic patients with atherosclerotic stenosis (>0%) in proximal ICA were recruited and underwent carotid MR vessel wall imaging. The 3D motion sensitized-driven equilibrium prepared rapid gradient-echo (3D-MERGE) was acquired for characterizing the wall thickness and longitudinal extent of the lesions in petrous ICA and the distance from proximal lesion to the petrous ICA...
March 29, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28353064/radiological-imaging-features-of-the-basal-ganglia-that-may-predict-progression-to-hemicraniectomy-in-large-territory-middle-cerebral-artery-infarct
#13
Asim Z Mian, David Edasery, Osamu Sakai, M Mustafa Qureshi, James Holsapple, Thanh Nguyen
PURPOSE: Predicting which patients are at risk for hemicraniectomy can be helpful for triage and can help preserve neurologic function if detected early. We evaluated basal ganglia imaging predictors for early hemicraniectomy in patients with large territory anterior circulation infarct. METHODS: This retrospective study evaluated patients with ischemic infarct admitted from January 2005 to July 2011. Patients with malignant cerebral edema refractory to medical therapy or with herniating signs such as depressed level of consciousness, anisocoria, and contralateral leg weakness were triaged to hemicraniectomy...
March 28, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28349170/ct-reconstruction-and-mri-fusion-of-3d-rotational-angiography-in-the-evaluation-of-pediatric-cerebrovascular-lesions
#14
Prakash Muthusami, Nicholas Shkumat, Vanessa Rea, Albert H Chiu, Manohar Shroff
PURPOSE: Complex neurovascular lesions in children require precise anatomic understanding for treatment planning. Although 3DRA is commonly employed for volumetric reformation in neurointerventional procedures, the ability to reconstruct this data into CT-like images (3DRA-CT) is not widely utilized. This study demonstrates the feasibility and usefulness of 3DRA-CT and subsequent MRI fusion for problem solving in pediatric neuroangiography. METHODS: This retrospective study includes 18 3DRA-CT studies in 16 children (age 9...
March 27, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28343250/apparent-diffusion-coefficient-changes-predict-survival-after-intra-arterial-bevacizumab-treatment-in-recurrent-glioblastoma
#15
Naveen Galla, Gloria Chiang, Shamik Chakraborty, Ranjodh Singh, A John Tsiouris, John Boockvar, Ilhami Kovanlikaya
PURPOSE: Superselective intra-arterial cerebral infusion (SIACI) of bevacizumab (BV) has emerged as a novel therapy in the treatment of recurrent glioblastoma (GB). This study assessed the use of apparent diffusion coefficient (ADC) in predicting length of survival after SIACI BV and overall survival in patients with recurrent GB. METHODS: Sixty-five patients from a cohort enrolled in a phase I/II trial of SIACI BV for treatment of recurrent GB were retrospectively included in this analysis...
March 25, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28343249/intraobserver-and-interobserver-variability-in-ct-angiography-and-mr-angiography-measurements-of-the-size-of-cerebral-aneurysms
#16
Hye Jeong Kim, Dae Young Yoon, Eun Soo Kim, Hyung Jin Lee, Hong Jun Jeon, Jong Young Lee, Byung-Moon Cho
PURPOSE: Accurate and reliable measurement of aneurysm size is important for treatment planning. The purpose of this study was to determine intraobserver and interobserver variability of CTA and MRA for measurement of the size of cerebral aneurysms. METHODS: Thirty patients with 33 unruptured cerebral aneurysms (saccular, >3 mm in their maximal dimension, with no daughter sacs or lobulations) who underwent 256-row multislice CTA, 3-D TOF MRA at 3.0T, and 3D rotational angiography (3DRA) were retrospectively analyzed...
March 25, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28341992/a-semi-automated-volumetric-software-for-segmentation-and-perfusion-parameter-quantification-of-brain-tumors-using-320-row-multidetector-computed-tomography-a-validation-study
#17
Soo Young Chae, Sangil Suh, Inseon Ryoo, Arim Park, Kyoung Jin Noh, Hackjoon Shim, Hae Young Seol
PURPOSE: We developed a semi-automated volumetric software, NPerfusion, to segment brain tumors and quantify perfusion parameters on whole-brain CT perfusion (WBCTP) images. The purpose of this study was to assess the feasibility of the software and to validate its performance compared with manual segmentation. METHODS: Twenty-nine patients with pathologically proven brain tumors who underwent preoperative WBCTP between August 2012 and February 2015 were included...
March 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28341991/altered-interhemispheric-functional-connectivity-in-patients-with-anisometropic-and-strabismic-amblyopia-a-resting-state-fmri-study
#18
Minglong Liang, Bing Xie, Hong Yang, Xuntao Yin, Hao Wang, Longhua Yu, Sheng He, Jian Wang
PURPOSE: Altered brain functional connectivity has been reported in patients with amblyopia by recent neuroimaging studies. However, relatively little is known about the alterations in interhemispheric functional connectivity in amblyopia. The present study aimed to investigate the functional connectivity patterns between homotopic regions across hemispheres in patients with anisometropic and strabismic amblyopia under resting state. METHODS: Nineteen monocular anisometropic amblyopia (AA), 18 strabismic amblyopia (SA), and 20 normal-sight controls (NC) were enrolled in this study...
March 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28331948/erratum-to-diagnostic-imaging-of-dementia-with-lewy-bodies-by-susceptibility-weighted-imaging-of-nigrosomes-versus-striatal-dopamine-transporter-single-photon-emission-computed-tomography-a-retrospective-observational-study
#19
Koji Kamagata, Tomoya Nakatsuka, Ryuji Sakakibara, Yohei Tsuyusaki, Tomohiro Takamura, Kanako Sato, Michimasa Suzuki, Masaaki Hori, Kanako K Kumamaru, Tsutomu Inaoka, Shigeki Aoki, Hitoshi Terada
No abstract text is available yet for this article.
March 22, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28324122/mr-imaging-differentiation-of-fe-2-and-fe-3-based-on-relaxation-and-magnetic-susceptibility-properties
#20
Olaf Dietrich, Johannes Levin, Seyed-Ahmad Ahmadi, Annika Plate, Maximilian F Reiser, Kai Bötzel, Armin Giese, Birgit Ertl-Wagner
PURPOSE: The aim of this study is to evaluate the MR imaging behavior of ferrous (Fe(2+)) and ferric (Fe(3+)) iron ions in order to develop a noninvasive technique to quantitatively differentiate between both forms of iron. METHODS: MRI was performed at 3 T in a phantom consisting of 21 samples with different concentrations of ferrous and ferric chloride solutions (between 0 and 10 mmol/L). A multi-echo spoiled gradient-echo pulse sequence with eight echoes was used for both T 2* and quantitative susceptibility measurements...
March 21, 2017: Neuroradiology
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