keyword
MENU ▼
Read by QxMD icon Read
search

FLAIR

keyword
https://www.readbyqxmd.com/read/29451209/predictors-of-short-term-outcome-in-patients-with-acute-middle-cerebral-artery-occlusion-unsuitability-of-fluid-attenuated-inversion-recovery-vascular-hyperintensity-scores
#1
Chan-Chan Li, Xiao-Zhu Hao, Jia-Qi Tian, Zhen-Wei Yao, Xiao-Yuan Feng, Yan-Mei Yang
Fluid-attenuated inversion recovery (FLAIR) vascular hyperintensity (FVH) is used to assess leptomeningeal collateral circulation, but clinical outcomes of patients with FVH can be very different. The aim of the present study was to assess a FVH score and explore its relationship with clinical outcomes. Patients with acute ischemic stroke due to middle cerebral artery M1 occlusion underwent magnetic resonance imaging and were followed up at 10 days (National Institutes of Health Stroke Scale) and 90 days (modified Rankin Scale) to determine short-term clinical outcomes...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29449515/-therapeutic-effects-of-low-dose-bevacizumab-for-the-treatment-of-recurrent-brain-metastases
#2
Etsuko Hattori, Akinori Miyakoshi, Kohichi Go, Toshiharu Aotake, Yoshiyuki Kawakami, Masato Sakamoto, Takeshi Kawauchi, Yuuki Oichi, Noritaka Sano, Makoto Hayase, Makoto Ohta, Yuki Hirose, Hiroki Toda
OBJECTIVE: Molecularly targeted therapy has been adopted to treat a number of cancers. Bevacizumab, a recombinant humanized monoclonal antibody against vascular endothelial growth factor, is a representative agent used in molecularly targeted therapeutic regimens. However, the therapeutic effect of bevacizumab for the treatment of brain metastases remains unknown. We report the clinical effects of low dose bevacizumab(≤2.5mg/kg/week)to treat recurrent brain metastases. METHODS: We retrospectively analyzed patients with brain metastases who had been treated with bevacizumab between 2012 and 2016 at our institution...
February 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29440480/trismus-caused-by-paraneoplastic-brainstem-encephalitis
#3
Naveed Malek, Maxwell Damian
We discuss the assessment and differential diagnoses of a middle-aged man who presented with trismus, double vision and behavioural problems. MRI scan of the brain was initially normal, but a month later showed high signal in the hippocampal region on fluid attenuated inversion recovery sequence (FLAIR) imaging. We suspected a paraneoplastic brainstem encephalitis because of his smoking history, rapidly progressive symptoms and abnormal brainstem signs. A positron emission tomography-CT scan identified abnormal subcarinal nodes, shown on biopsy to be metastatic small cell lung cancer...
February 13, 2018: Practical Neurology
https://www.readbyqxmd.com/read/29439125/evaluation-of-leptomeningeal-contrast-enhancement-using-pre-and-postcontrast-subtraction-3d-flair-imaging-in-multiple-sclerosis
#4
R Zivadinov, D P Ramasamy, J Hagemeier, C Kolb, N Bergsland, F Schweser, M G Dwyer, B Weinstock-Guttman, D Hojnacki
BACKGROUND AND PURPOSE: Leptomeningeal contrast enhancement is found in patients with multiple sclerosis, though reported rates have varied. The use of 3D-fluid-attenuated inversion recovery pre- and postcontrast subtraction imaging may more accurately determine the frequency of leptomeningeal contrast enhancement. The purpose of this study was to investigate the frequency of leptomeningeal contrast enhancement using the pre- and postcontrast subtraction approach and to evaluate 3 different methods of assessing the presence of leptomeningeal contrast enhancement...
February 8, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29438039/blood-ocular-barrier-disruption-in-acute-stroke-patients
#5
Emi Hitomi, Alexis N Simpkins, Marie Luby, Lawrence L Latour, R John Leigh, Richard Leigh
OBJECTIVE: Prompted by the unexpected finding of gadolinium leakage into ocular structures (GLOS) in acute stroke patients, we studied the frequency and nature of this finding in 167 patients. METHODS: Patients were selected who had an MRI with gadolinium at baseline and another MRI with fluid-attenuated inversion recovery (FLAIR) imaging at 2 and/or 24 hours later. GLOS was detected as lack of vitreous and/or aqueous fluid suppression on postcontrast FLAIR images...
February 7, 2018: Neurology
https://www.readbyqxmd.com/read/29434275/quantification-of-glioblastoma-mass-effect-by-lateral-ventricle-displacement
#6
Tyler C Steed, Jeffrey M Treiber, Michael G Brandel, Kunal S Patel, Anders M Dale, Bob S Carter, Clark C Chen
Mass effect has demonstrated prognostic significance for glioblastoma, but is poorly quantified. Here we define and characterize a novel neuroimaging parameter, lateral ventricle displacement (LVd), which quantifies mass effect in glioblastoma patients. LVd is defined as the magnitude of displacement from the center of mass of the lateral ventricle volume in glioblastoma patients relative to that a normal reference brain. Pre-operative MR images from 214 glioblastoma patients from The Cancer Imaging Archive (TCIA) were segmented using iterative probabilistic voxel labeling (IPVL)...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29431878/characteristics-associated-with-outcome-in-first-ever-posterior-fossa-stroke-patients
#7
Kersten Villringer, Malgorzata Florczak-Rzepka, Ulrike Grittner, Peter Brunecker, Hans Tepe, Christian H Nolte, Jochen B Fiebach
BACKGROUND: Factors like infarct volume, infarct location and symptom severity can considerably influence long-term outcome in posterior fossa strokes. Therapy decision can sometimes be complicated by discrepancies between infarct volume and clinical severity. We aimed to evaluate imaging and clinical parameters possibly influencing long-term outcome in first-ever posterior fossa stroke patients. METHODS: Imaging was performed on a 3 T MRI scanner. Sixty-one out of 1795 patients from the observational 1000Plus and LOBI studies (clinicaltrials...
February 12, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29430935/the-effect-of-glioblastoma-heterogeneity-on-survival-stratification-a-multimodal-mr-imaging-texture-analysis
#8
Yang Liu, Xi Zhang, Na Feng, Lulu Yin, Yalong He, Xiaopan Xu, Hongbing Lu
Background Quantitative evaluation of the effect of glioblastoma (GBM) heterogeneity on survival stratification would be critical for the diagnosis, treatment decision, and follow-up management. Purpose To evaluate the effect of GBM heterogeneity on survival stratification, using texture analysis on multimodal magnetic resonance (MR) imaging. Material and Methods A total of 119 GBM patients (65 in long-term and 54 in short-term survival group, separated by overall survival of 12 months) were selected from the Cancer Genome Atlas, who underwent the T1-weighted (T1W) contrast-enhanced (CE), T1W, T2-weighted (T2W), and FLAIR sequences...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29425986/is-edema-a-matter-of-concern-after-laser-ablation-of-epileptogenic-focus
#9
Vivek Tandon, Michael Lang, Poodipedi Sarat Chandra, Ashwini Sharan, Ajay Garg, Manjari Tripathi
BACKGROUND: A stereotactically placed laser fiber can deliver thermal energy to an epileptogenic focus in brain. This procedure is done under intraoperative (thermography) magnetic resonance imaging (MRI) guidance. Thermoablation can lead to edema in surrounding area and can cause secondary insult. In this case report of three cases, we have quantified the edema produced after laser ablation, with sequential MRI in immediate post-operative period. CASE DESCRIPTION(S): Three patients of intractable epilepsy underwent proper neurological and neuro-radiological workup to localize the site of epileptogenic foci...
February 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29424126/fewer-peripheral-asymmetrical-cortical-veins-is-a-predictor-of-favorable-outcome-in-mca-infarctions-with-swi-dwi-mismatch
#10
Tao Yuan, Guoli Ren, Guanmin Quan, Duo Gao
BACKGROUND: Outcome prediction of asymmetrical prominent cortical veins (APCVs) on infarction is still debated and may help in selecting patients for reperfusion treatment. PURPOSE: To explore the relationship between fewer peripheral APCVs and the outcome in the patients of acute/subacute middle cerebral artery (MCA) infarctions as well as the relationship between this sign and stenosis of ipsilateral MCA. STUDY TYPE: Retrospective case-control study...
February 9, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29424062/abrogation-of-fluid-suppression-in-intracranial-postcontrast-fluid-attenuated-inversion-recovery-magnetic-resonance-imaging-a-clinical-and-phantom-study
#11
Peter J Dickinson, Sarah Jones-Woods, Derek D Cissell
Postcontrast, fluid-attenuated inversion recovery (FLAIR) sequences are reported to be of variable value in veterinary and human neuroimaging. The source of hyperintensity in postcontrast-T2 FLAIR images is inconsistently reported and has implications for the significance of imaging findings. We hypothesized that the main source of increased signal intensity in postcontrast-T2 FLAIR images would be due to gadolinium leakage into adjacent fluid, and that the resulting gadolinium-induced T1 shortening causes reappearance of fluid hyperintensity, previously nulled on precontrast FLAIR images...
February 8, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29423079/therapeutic-effect-of-nerve-growth-factor-on-canine-cerebral-infarction-evaluated-by-mri
#12
Yong Wang, Hui Zhang, Zhe Wang, Huaijun Liu, Xin Tian, Jian Yu, Chaoxu Chen
To explore therapeutic effect of nerve growth factor (NGF) on cerebral infarction by establishing canine middle cerebral artery occlusion (MCAO) infarct model. The magnetic resonance imaging (MRI) technology was used to study effects of NGF on cerebral infarction, and the results of MRI indexes (such as diffusion-weighted imaging (DWI) and perfusion-weighted imaging (PWI)) were compared with the results of pathology, cell biology and molecular biology. The clinical manifestations of the canine infarction model treated by NGF were significantly improved within 7 days compared with control group...
January 9, 2018: Oncotarget
https://www.readbyqxmd.com/read/29412496/characterization-of-active-and-infiltrative-tumorous-subregions-from-normal-tissue-in-brain-gliomas-using-multiparametric-mri
#13
Anahita Fathi Kazerooni, Mahnaz Nabil, Mehdi Zeinali Zadeh, Kavous Firouznia, Farid Azmoudeh-Ardalan, Alejandro F Frangi, Christos Davatzikos, Hamidreza Saligheh Rad
BACKGROUND: Targeted localized biopsies and treatments for diffuse gliomas rely on accurate identification of tissue subregions, for which current MRI techniques lack specificity. PURPOSE: To explore the complementary and competitive roles of a variety of conventional and quantitative MRI methods for distinguishing subregions of brain gliomas. STUDY TYPE: Prospective. POPULATION: Fifty-one tissue specimens were collected using image-guided localized biopsy surgery from 10 patients with newly diagnosed gliomas...
February 7, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29409679/peritoneal-dialysis-a-factor-of-risk-or-protection-for-posterior-reversible-encephalopathy-syndrome-review-of-the-literature
#14
Mercedes Moreiras-Plaza, Francisco Fernández-Fleming, Naiara Azkárate-Ramírez, Walfred Nájera-de la Garza, Isabel Martín-Baez, Maria Hernansanz-Pérez
Posterior reversible encephalopathy syndrome is a clinical and radiological entity with acute or subacute neurological presentation associated with brain lesions that primarily affect the white matter of the posterior regions. It is often associated with the rapid onset of severe hypertension and/or with kidney failure (acute and chronic), but it has also been reported as a neurological complication in several medical conditions. In recent years, there has been an increase in the number of cases and related publications due to the advance of diagnostic imaging techniques...
February 3, 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29406957/erratum-to-can-a-15s-flair-replace-conventional-flair-sequence-in-stroke-mr-protocols-j-neuroradiol-44-2017-192-197
#15
J Benzakoun, B Maïer, D Calvet, M Edjlali, G Turc, S Lion, L Legrand, W Ben Hassen, O Naggara, J F Meder, J L Mas, C Oppenheim
No abstract text is available yet for this article.
February 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29397361/neurocognition-and-cerebral-lesion-burden-in-high-risk-patients-before-undergoing-transcatheter-aortic-valve-replacement-insights-from-the-sentinel-trial
#16
Ronald M Lazar, Marykathryn A Pavol, Tobias Bormann, Michael G Dwyer, Carlye Kraemer, Roseann White, Robert Zivadinov, Jeffrey C Wertheimer, Angelika Thöne-Otto, Lisa D Ravdin, Richard Naugle, Dawn Mechanic-Hamilton, William S Garmoe, Anthony Y Stringer, Heidi A Bender, Samir R Kapadia, Susheel Kodali, Alexander Ghanem, Axel Linke, Roxana Mehran, Renu Virmani, Tamim Nazif, Azin Parhizgar, Martin B Leon
OBJECTIVES: The authors sought to determine baseline neurocognition before transcatheter aortic valve replacement (TAVR) and its correlations with pre-TAVR brain imaging. BACKGROUND: TAVR studies have not shown a correlation between diffusion-weighted image changes and neurocognition. The authors wanted to determine the extent to which there was already impairment at baseline that correlated with cerebrovascular disease. METHODS: SENTINEL (Cerebral Protection in Transcatheter Aortic Valve Replacement) trial patients had cognitive assessments of attention, processing speed, executive function, and verbal and visual memory...
January 27, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29390424/adult-hippocampal-ganglioneuroblastoma-case-report-and-literature-review
#17
Pei-Sen Yao, Guo-Rong Chen, Huang-Cheng Shang-Guan, Qing-Song Lin, Xing-Fu Wang, Shu-Fa Zheng, De-Zhi Kang
RATIONALE: Intracranial ganglioneuroblastoma represents a rare subtype of primitive neuroectodermal tumor. Here, we report a hippocampal ganglioneuroblastoma and a literature review of cerebral anglioneuroblastoma is carried out. PATIENT CONCERNS: We report a 16-year-old male patient presenting with absence seizure and high-infiltration hippocampal ganglioneuroblastoma. INTERVENTIONS: Magnetic resonance imaging (MRI) indicates a space-occupying lesion with a well-defined margin in the right temporal lobe and hippocampus...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29387531/diagnostic-accuracy-of-semiautomatic-lesion-detection-plus-quantitative-susceptibility-mapping-in-the-identification-of-new-and-enhancing-multiple-sclerosis-lesions
#18
Shun Zhang, Thanh D Nguyen, Yize Zhao, Susan A Gauthier, Yi Wang, Ajay Gupta
Purpose: To evaluate the diagnostic accuracy of a novel non-contrast brain MRI method based on semiautomatic lesion detection using T2w FLAIR subtraction image, the statistical detection of change (SDC) algorithm (T2w + SDC), and quantitative susceptibility mapping (QSM). This method identifies new lesions and discriminates between enhancing and nonenhancing lesions in multiple sclerosis (MS). Methods: Thirty three MS patients who had MRIs at two different time points with at least one new Gd-enhancing lesion on the 2nd MRI were included in the study...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29386273/flair-vascular-hyperintensities-predict-early-ischemic-recurrence-in-tia
#19
Ki-Woong Nam, Chi Kyung Kim, Tae Jung Kim, Kyungmi Oh, Moon-Ku Han, Sang-Bae Ko, Byung-Woo Yoon
OBJECTIVE: To evaluate the relationship between fluid-attenuated inversion recovery (FLAIR) vascular hyperintensity (FVH) and early ischemic lesion recurrence (follow-up diffusion-weighted imaging [FU-DWI] [+]) in patients with lesion-negative TIA. METHODS: We recruited consecutive patients with lesion-negative TIA within 24 hours of symptom onset, who underwent follow-up MRI during the acute period. FVH was defined as a focal or serpentine high signal intensity on FLAIR images...
January 31, 2018: Neurology
https://www.readbyqxmd.com/read/29383717/topographic-principles-of-cortical-fluid-attenuated-inversion-recovery-signal-in-temporal-lobe-epilepsy
#20
Sophie Adler, Seok-Jun Hong, Min Liu, Torsten Baldeweg, J Helen Cross, Andrea Bernasconi, Boris C Bernhardt, Neda Bernasconi
OBJECTIVE: In drug-resistant temporal lobe epilepsy (TLE), relative to the large number of whole-brain morphological studies, neocortical T2 changes have not been systematically investigated. The aim of this study was to assess the anatomical principles that govern the distribution of neocortical T2-weighted fluid-attenuated inversion recovery (FLAIR) signal intensity and uncover its topographic principles. METHODS: Using a surface-based sampling scheme, we mapped neocortical FLAIR intensity of 61 TLE patients relative to 38 healthy controls imaged at 3 T...
January 31, 2018: Epilepsia
keyword
keyword
1499
1
2
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"