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Neuroradiology

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https://www.readbyqxmd.com/read/28634647/erratum-to-training-guidelines-for-endovascular-stroke-intervention-an-international-multi-society-consensus-document
#1
S D Lavine, K Cockroft, B Hoh, N Bambakidis, A A Khalessi, H Woo, H Riina, A Siddiqui, J A Hirsch, W Chong, H Rice, J Wenderoth, P Mitchell, A Coulthard, T J Signh, C Phatouros, M Khangure, P Klurfan, K Ter Brugge, D Iancu, T Gunnarsson, O Jansen, M Muto, I Szikora, L Pierot, P Brouwer, J Gralla, S Renowden, T Andersson, J Fiehler, F Turjman, P White, A C Januel, L Spelle, Z Kulcsar, R Chapot, A Biondi, S Dima, C Taschner, M Szajner, A Krajina, N Sakai, Y Matsumaru, S Yoshimura, M Ezura, T Fujinaka, K Iihara, A Ishii, T Higashi, M Hirohata, A Hyodo, Y Ito, M Kawanishi, H Kiyosue, E Kobayashi, S Kobayashi, N Kuwayama, Y Matsumoto, S Miyachi, Y Murayama, I Nagata, I Nakahara, S Nemoto, Y Niimi, H Oishi, J Satomi, T Satow, K Sugiu, M Tanaka, T Terada, H Yamagami, O Diaz, P Lylyk, M V Jayaraman, A Patsalides, C D Gandhi, S K Lee, T Abruzzo, B Albani, S A Ansari, A S Arthur, B W Baxter, K R Bulsara, M Chen, J E Delgado Almandoz, J F Fraser, D V Heck, S W Hetts, M S Hussain, R P Klucznik, T M Leslie-Mawzi, W J Mack, R A McTaggart, P M Meyers, J Mocco, C J Prestigiacomo, G L Pride, P A Rasmussen, R M Starke, P J Sunenshine, R W Tarr, D F Frei, M Ribo, R G Nogueira, O O Zaidat, T Jovin, I Linfante, D Yavagal, D Liebeskind, R Novakovic, S Pongpech, G Rodesch, M Soderman, A Taylor, T Krings, D Orbach, L Picard, D C Suh, H Q Zhang
No abstract text is available yet for this article.
June 20, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28623483/normal-appearing-white-matter-permeability-a-marker-of-inflammation-and-information-processing-speed-deficit-among-relapsing-remitting-multiple-sclerosis-patients
#2
Eldar Eftekhari, Seyed-Parsa Hojjat, Rita Vitorino, Timothy J Carroll, Charles Grady Cantrell, Liesly Lee, Matthew W Taylor, Sarah A Morrow, Haddas Benhabib, Richard I Aviv, Andrea Kassner
PURPOSE: Blood-brain barrier breakdown (BBBB) occurs in relapsing remitting multiple sclerosis (RRMS). Relative recirculation (rR), a BBBB surrogate, may show inflammation undetectable by gadolinium. We compared normal appearing white matter (NAWM) rR in patients with and without disability measured with Symbol Digit Modalities Test and the Expanded Disability Status Scale (EDSS). METHODS: Thirty-nine RRMS patients were prospectively recruited and classified as impaired or non-impaired based on the SDMT and EDSS threshold ≥3...
June 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28623482/cost-effectiveness-analysis-of-a-non-contrast-screening-mri-protocol-for-vestibular-schwannoma-in-patients-with-asymmetric-sensorineural-hearing-loss
#3
Matthew G Crowson, Daniel J Rocke, Jenny K Hoang, Jane L Weissman, David M Kaylie
PURPOSE: We aimed to determine if a non-contrast screening MRI is cost-effective compared to a full MRI protocol with contrast for the evaluation of vestibular schwannomas. METHODS: A decision tree was constructed to evaluate full MRI and screening MRI strategies for patients with asymmetric sensorineural hearing loss. If a patient were to have a positive screening MRI, s/he received a full MRI. Vestibular schwannoma prevalence, MRI specificity and sensitivity, and gadolinium anaphylaxis incidence were obtained through literature review...
June 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28597208/subject-specific-regional-measures-of-water-diffusion-are-associated-with-impairment-in-chronic-spinal-cord-injury
#4
Ann S Choe, Cristina L Sadowsky, Seth A Smith, Peter C M van Zijl, James J Pekar, Visar Belegu
PURPOSE: We aimed to identify non-invasive imaging parameters that can serve as biomarkers for the integrity of the spinal cord, which is paramount to neurological function. Diffusion tensor imaging (DTI) indices are sensitive to axonal and myelin damage, and have strong potential to serve as such biomarkers. However, averaging DTI indices over large regions of interest (ROIs), a common approach to analyzing the images of injured spinal cord, leads to loss of subject-specific information...
June 8, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28597207/in-memory-of-marco-leonardi
#5
EDITORIAL
Mario Muto, Alberto Beltramello
No abstract text is available yet for this article.
June 8, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28585082/magnetic-resonance-imaging-perfusion-is-associated-with-disease-severity-and-activity-in-multiple-sclerosis
#6
Piotr Sowa, Gro Owren Nygaard, Atle Bjørnerud, Elisabeth Gulowsen Celius, Hanne Flinstad Harbo, Mona Kristiansen Beyer
PURPOSE: The utility of perfusion-weighted imaging in multiple sclerosis (MS) is not well investigated. The purpose of this study was to compare baseline normalized perfusion measures in subgroups of newly diagnosed MS patients. We wanted to test the hypothesis that this method can differentiate between groups defined according to disease severity and disease activity at 1 year follow-up. METHODS: Baseline magnetic resonance imaging (MRI) including a dynamic susceptibility contrast perfusion sequence was performed on a 1...
June 5, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28580533/quantitative-assessment-on-blood-brain-barrier-permeability-of-acute-spontaneous-intracerebral-hemorrhage-in-basal-ganglia-a-ct-perfusion-study
#7
Haoli Xu, Rui Li, Yuxia Duan, Jincheng Wang, Shuailiang Liu, Yue Zhang, Wenwen He, Xiaotao Qin, Guoquan Cao, Yunjun Yang, Qichuan Zhuge, Jun Yang, Weijian Chen
PURPOSE: Blood-brain barrier (BBB) damage aggravates perihematomal edema, and edema volume predicts prognosis independently. But the BBB permeability at the late stage of acute intracerebral hemorrhage (ICH) patients is uncertain. We aimed to assess the BBB permeability of spontaneous basal ganglia ICH using computed tomographic perfusion (CTP) and investigates its relationship with hematoma and perihematomal edema volume. METHODS: We performed CTP on 54 consecutive ICH patients within 24 to 72 h after symptom onset...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28580532/follow-up-ct-and-ct-angiography-after-intracranial-aneurysm-clipping-and-coiling-improved-image-quality-by-iterative-metal-artifact-reduction
#8
Georg Bier, Malte Niklas Bongers, Johann-Martin Hempel, Anja Örgel, Till-Karsten Hauser, Ulrike Ernemann, Florian Hennersdorf
PURPOSE: This paper aims to evaluate a new iterative metal artifact reduction algorithm for post-interventional evaluation of brain tissue and intracranial arteries. METHODS: The data of 20 patients that underwent follow-up cranial CT and cranial CT angiography after clipping or coiling of an intracranial aneurysm was retrospectively analyzed. After the images were processed using a novel iterative metal artifact reduction algorithm, images with and without metal artifact reduction were qualitatively evaluated by two readers, using a five-point Likert scale...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28580531/age-related-changes-of-white-matter-association-tracts-in-normal-children-throughout-adulthood-a-diffusion-tensor-tractography-study
#9
Shaimaa Abdelsattar Mohammad, Neveen Hassan Nashaat
PURPOSE: The aim of this study is to study the age, gender and lateral asymmetry-related white matter changes of long association tracts throughout late childhood and adolescence into adulthood using diffusion tensor tractography (DTT). METHODS: DTT was performed in 44 healthy subjects aged 7-45 years. Fractional anisotropy (FA), radial diffusivity (RD), axial diffusivity (AD), Trace, density and volume were calculated for long association tracts, namely the inferior fronto-occipital fasciculus (IFOF), inferior longitudinal fasciculus (ILF), uncinate fasciculus, superior longitudinal fasciculus (SLF) and its arcuate fibres...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28580530/endovascular-treatment-in-patients-with-carotid-artery-dissection-and-intracranial-occlusion-a-systematic-review
#10
REVIEW
Jan W Hoving, Henk A Marquering, Charles B L M Majoie
PURPOSE: Recently, multiple randomised controlled trials showed efficacy of endovascular treatment over traditional care in patients with acute ischemic stroke due to an intracranial anterior circulation occlusion. Internal carotid artery (ICA) dissection with a concomitant intracranial occlusion is a rare but important cause of severe acute ischemic stroke. Although this subtype of acute ischemic stroke is mostly treated with endovascular treatment, treatment outcomes are still sparsely studied...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28580529/abnormal-baseline-brain-activity-in-alzheimer-s-disease-patients-with-depression-a-resting-state-functional-magnetic-resonance-imaging-study
#11
Xiaozheng Liu, Zhongwei Guo, Yanping Ding, Jiapeng Li, Gang Wang, Hongtao Hou, Xingli Chen, Enyan Yu
PURPOSE: As one of the most common mental disorders and the most important precursor of suicide in Alzheimer's disease (AD), depression is associated with a decline in both well-being and daily functioning. At present, the diagnosis of AD patients with depression (D-AD) is largely dependent on clinical signs and symptoms, and the precise neural correlate underlying D-AD is still not fully understood. METHODS: The current study sought to investigate low-frequency oscillations at the voxel level in D-AD patients based on the amplitude of low-frequency fluctuations (ALFF) measured using resting-state functional magnetic resonance imaging...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28550466/schizophrenia-symptomatic-associations-with-diffusion-tensor-imaging-measured-fractional-anisotropy-of-brain-a-meta-analysis
#12
Xu Yang, Ding Cao, Xiumei Liang, Jiannong Zhao
PURPOSE: Several studies have examined the relationships between diffusion tensor imaging (DTI)-measured fractional anisotropy (FA) and the symptoms of schizophrenia, but results vary across the studies. The aim of this study was to carry out a meta-analysis of correlation coefficients reported by relevant studies to evaluate the correlative relationships between FA of various parts of the brain and schizophrenia symptomatic assessments. METHODS: Literature was searched in several electronic databases, and study selection was based on précised eligibility criteria...
May 26, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28550465/differential-diagnosis-of-oligodendroglial-and-astrocytic-tumors-using-imaging-results-the-added-value-of-perfusion-mr-imaging
#13
Hyun Jung Yoon, Kook Jin Ahn, Song Lee, Jin Hee Jang, Hyun Seok Choi, So Lyung Jung, Bum Soo Kim, Shin Soo Jeun, Yong Kil Hong
PURPOSE: The purposes of the present study are to assess whether different characteristics of oligodendrogliomas and astrocytic tumors are visible on MR imaging and to determine the added value of perfusion imaging in conventional MR imaging when differentiating oligodendrogliomas from astrocytic tumors. METHODS: We retrospectively studied 22 oligodendroglioma and 54 astrocytic tumor patients, including glioblastoma multiforme (GBM). The morphological tumor characteristics were evaluated using MR imaging...
May 26, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28540401/white-matter-microstructure-damage-in-tremor-dominant-parkinson-s-disease-patients
#14
ChunYan Luo, Wei Song, Qin Chen, Jing Yang, QiYong Gong, Hui-Fang Shang
PURPOSE: Resting tremor is one of the cardinal motor features of Parkinson's disease (PD). Several lines of evidence suggest resting tremor may have different underlying pathophysiological processes from those of bradykinesia and rigidity. The current study aims to identify white matter microstructural abnormalities associated with resting tremor in PD. METHODS: We recruited 60 patients with PD (30 with tremor-dominant PD and 30 with nontremor-dominant PD) and 26 normal controls...
May 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28540400/imaging-of-cerebral-ischemic-edema-and-neuronal-death
#15
REVIEW
Rüdiger von Kummer, Imanuel Dzialowski
PURPOSE: In acute cerebral ischemia, the assessment of irreversible injury is crucial for treatment decisions and the patient's prognosis. There is still uncertainty how imaging can safely differentiate reversible from irreversible ischemic brain tissue in the acute phase of stroke. METHODS: We have searched PubMed and Google Scholar for experimental and clinical papers describing the pathology and pathophysiology of cerebral ischemia under controlled conditions...
May 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28534135/automated-algorithm-for-counting-microbleeds-in-patients-with-familial-cerebral-cavernous-malformations
#16
Xiaowei Zou, Blaine L Hart, Marc Mabray, Mary R Bartlett, Wei Bian, Jeffrey Nelson, Leslie A Morrison, Charles E McCulloch, Christopher P Hess, Janine M Lupo, Helen Kim
PURPOSE: Familial cerebral cavernous malformation (CCM) patients present with multiple lesions that can grow both in number and size over time and are reliably detected on susceptibility-weighted imaging (SWI). Manual counting of lesions is arduous and subject to high variability. We aimed to develop an automated algorithm for counting CCM microbleeds (lesions <5 mm in diameter) on SWI images. METHODS: Fifty-seven familial CCM type-1 patients were included in this institutional review board-approved study...
May 22, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28526977/standards-of-practice-in-interventional-neuroradiology
#17
Olav Jansen, Istvan Szikora, Francesco Causin, Hartmut Brückmann, Kyriakos Lobotesis
The growing importance of INR has resulted in the need to define and promote professional standards of clinical practice. Several professional organizations have published guidelines recently for the neurointerventional treatment of cerebrovascular diseases, including technical and personal recommendations, but detailed definitions of technical and organizational conditions needed for the safe and effective performance of such treatments are lacking. To fill this gap ESNR, ESMINT and the UEMS Division for Neuroradiology established a working group, to develop a consensus paper on "Standards of Practice in Interventional Neuroradiology"...
May 19, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28523357/lesion-location-associated-with-balance-recovery-and-gait-velocity-change-after-rehabilitation-in-stroke-patients
#18
Hyun Im Moon, Hyo Jeong Lee, Seo Yeon Yoon
PURPOSE: Impaired gait function after stroke contributes strongly to overall patient disability. However, the response to rehabilitation varies between individuals. The aims of this study were to identify predictors of gait velocity change and to elucidate lesion location associated with change of balance and gait function. METHODS: We reviewed 102 stroke patients. The patients were divided into two groups according to gait ability post-rehabilitation, and we analyzed differences in their characteristics, such as demographic information, lesion factors, and initial balance function...
May 18, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28497261/othmar-schubiger
#19
EDITORIAL
Anton Valavanis
No abstract text is available yet for this article.
May 11, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28444426/investigation-of-altered-microstructure-in-patients-with-drug-refractory-epilepsy-using-diffusion-tensor-imaging
#20
Yuwei Jiang, Lingyan Mao, Xu Yan, Mingxia Fan, Xin Wang, Jing Ding, Dongrong Xu
PURPOSE: The risk of refractory epilepsy can be more dangerous than the adverse effect caused by medical treatment. In this study, we employed voxel-wise analysis (VWA) and tract-based spatial statistics (TBSS) methods to measure microstructural changes using diffusion tensor imaging (DTI) in patients of drug refractory epilepsy (DRE) who had been epileptic for more than 10 years. METHODS: To examine the specific microstructural abnormalities in DRE patients and its difference from medically controlled epilepsy (MCE), we acquired DTI data of 7 DRE patients, 37 MCE patients, and 31 healthy controls (HCs) using a 3 T MRI scanner...
April 25, 2017: Neuroradiology
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