keyword
MENU ▼
Read by QxMD icon Read
search

T2 FLAIR

keyword
https://www.readbyqxmd.com/read/29781369/contralateral-extensive-cerebral-hemorrhagic-venous-infarction-caused-by-retrograde-venous-reflux-into-the-opposite-basal-vein-of-rosenthal-in-posttraumatic-carotid-cavernous-fistula-a-case-report-and-literature-review
#1
Prasert Iampreechakul, Adisak Tanpun, Punjama Lertbusayanukul, Somkiet Siriwimonmas
We describe a patient with traumatic carotid-cavernous fistula (CCF), subsequently developing contralateral extensive hemorrhagic venous infarction from retrograde venous reflux into the opposite basal vein of Rosenthal. A 54-year-old woman was involved in a motor vehicle accident and sustained severe traumatic brain injury. Two months later, she developed bilateral proptosis and audible bruit. Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) of the brain demonstrated the right direct CCF...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29780855/magnetic-resonance-imaging-and-histopathological-visualization-of-human-dural-lymphatic-vessels
#2
Seung-Kwon Ha, Govind Nair, Martina Absinta, Nicholas J Luciano, Daniel S Reich
In this protocol, we describe a method to visualize and map dural lymphatic vessels in-vivo using magnetic resonance imaging (MRI) and ex-vivo using histopathological techniques. While MRI protocols for routine imaging of meningeal lymphatics include contrast-enhanced T2-FLAIR and T1- weighted black-blood imaging, a more specific 3D mapping of the lymphatic system can be obtained by administering two distinct gadolinium-based MRI contrast agents on different days (gadofosveset and gadobutrol) and subsequently processing images acquired before and after administration of each type of contrast...
April 20, 2018: Bio-protocol
https://www.readbyqxmd.com/read/29774659/magnetic-resonance-imaging-evaluation-of-treatment-efficacy-and-prognosis-for-brain-metastases-in-lung-cancer-patients-after-radiotherapy-a-preliminary-study
#3
Yuhui Liu, Xibin Liu, Liang Xu, Liheng Liu, Yuhong Sun, Minghuan Li, Haiyan Zeng, Shuanghu Yuan, Jinming Yu
BACKGROUND: This study used magnetic resonance imaging (MRI) to monitor changes to brain metastases and investigate the imaging signs used to evaluate treatment efficacy and determine prognosis following radiotherapy for brain metastases from lung cancer. METHODS: A total of 60 non-small cell lung cancer patients with brain oligometastases were selected. MRI scans were conducted before and 3, 6, 9, 12, 18, 24, and 30 months after radiotherapy. The tumor and peritumoral edema diameters, Cho/Cr values, elevation of the Lip peak value, and whether the island (yu-yuan) sign or high-signal ring were present on T2 fluid-attenuated inversion recovery (FLAIR) imaging were recorded for each metastasis...
May 17, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29766451/early-hemolysis-within-human-intracerebral-hematomas-an-mri-study
#4
Ran Liu, Haijiao Li, Ya Hua, Richard F Keep, Jiangxi Xiao, Guohua Xi, Yining Huang
Early hemolysis occurs in the hematoma within 24 h in rat model of intracerebral hemorrhage (ICH). The present study investigated the prevalence of early hemolysis in ICH patients using MRI and the relationship between early hemolysis and perihematomal edema. Thirty ICH patients were prospectively enrolled within 24 h of onset. All patients had cranial CT on admission. Cranial MRI with T2 FLAIR-weighted imaging and T2*-weighted imaging were undertaken at days 1 and 14. The evolution of a non-hypointense lesion on T2*-weighted images and the relationship between the volume of that non-hypointense lesion and perihematomal edema volume were investigated...
May 15, 2018: Translational Stroke Research
https://www.readbyqxmd.com/read/29754739/high-field-intraoperative-mri-in-glioma-surgery-a-prospective-study-with-volumetric-analysis-of-extent-of-resection-and-functional-outcome
#5
H-A Leroy, C Delmaire, E Le Rhun, E Drumez, J-P Lejeune, N Reyns
BACKGROUND: High-field intraoperative MRI (IoMRI) is a useful tool to improve the extent of glioma resection (EOR). OBJECTIVE: To compare the interest of 1.5T IoMRI in glioma surgery between enhancing and non-enhancing tumors, based on volumetric analysis. METHODS: A prospective single-center study included consecutive adult patients undergoing glioma surgery with IoMRI. Volumetric evaluation was based on FLAIR hypersignal after gadolinium injection in non-enhancing tumors and T1 hypersignal after gadolinium injection in enhancing tumors...
May 10, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29739362/case-report-of-a-novel-homozygous-splice-site-mutation-in-pla2g6-gene-causing-infantile-neuroaxonal-dystrophy-in-a-sudanese-family
#6
Liena E O Elsayed, Inaam N Mohammed, Ahlam A A Hamed, Maha A Elseed, Mustafa A M Salih, Ashraf Yahia, Rayan A Siddig, Mutaz Amin, Mahmoud Koko, Mustafa I Elbashir, Muntaser E Ibrahim, Alexis Brice, Ammar E Ahmed, Giovanni Stevanin
BACKGROUND: Infantile neuroaxonal dystrophy (INAD) is a rare hereditary neurological disorder caused by mutations in PLA2G6. The disease commonly affects children below 3 years of age and presents with delay in motor skills, optic atrophy and progressive spastic tetraparesis. Studies of INAD in Africa are extremely rare, and genetic studies from Sub Saharan Africa are almost non-existent. CASE PRESENTATION: Two Sudanese siblings presented, at ages 18 and 24 months, with regression in both motor milestones and speech development and hyper-reflexia...
May 8, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29736421/exquisite-response-to-intravenous-immunoglobulin-in-susac-syndrome-during-pregnancy
#7
Enrique Gomez-Figueroa, Sofia Garcia-Trejo, Raul Anwar Garcia-Santos, Gerardo Quiñones-Pesqueira, Juan Manuel Calleja-Castillo
Introduction: From its initial report on two female patients in 1979 by J.O. Susac, Susac syndrome (SuS) or SICRET (small infarctions of cochlear, retinal and encephalic tissue) has persisted as an elusive entity. To date the available evidence for its treatment is based on case reports and case series. The largest systematic review described only 304 reported cases since the 1970s. Here we presented the first reported case to our knowledge in Mexican population and the unusual presentation in a pregnant patient...
March 2018: ENeurologicalSci
https://www.readbyqxmd.com/read/29724768/identification-of-chronic-active-multiple-sclerosis-lesions-on-3t-mri
#8
M Absinta, P Sati, A Fechner, M K Schindler, G Nair, D S Reich
BACKGROUND AND PURPOSE: MR imaging-pathologic studies have reported that paramagnetic rims on 7T susceptibility-based MR imaging identify, in vivo, the subset of MS lesions with compartmentalized inflammation at the lesion edge and associated remyelination failure. Here, we assessed the reliability of detecting these rims on high-resolution 3T phase images. MATERIALS AND METHODS: High-resolution T2* and phase MR imaging was collected in 20 patients with MS at 3T (3D segmented EPI, 0...
May 3, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29721578/circumventricular-organs-of-human-brain-visualized-on-post-contrast-3d-fluid-attenuated-inversion-recovery-imaging
#9
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/29706150/neurosyphilis-mighty-imitator-forays-with-benign-presentation-and-unique-neuroimaging-findings
#10
Harmanpreet Tiwana, Aiesha Ahmed
Background: Common causes of temporal lobe hyper intensities are central nervous system infections like herpes simplex encephalitis, Lyme disease, limbic encephalitis and vascular pathology like Cerebral Autosomal Dominant Arteriopathy with Subcortical infarcts and Leukoencephalopathy. Methods: Personal assessment, laboratory data analysis and neuroimaging for the patient who was admitted to a central Pennsylvania tertiary care referral centre were conducted. Results: A 52-year-old male presented with a 1-year history of diffuse dysesthesia in upper and lower extremities with associated intermittent headaches and neck stiffness...
April 30, 2018: Sexual Health
https://www.readbyqxmd.com/read/29682033/diagnostic-and-prognostic-capability-of-newer-magnetic-resonance-imaging-brain-sequences-in-diffuse-axonal-injury-patient
#11
Mayank Bansal, Virendra Deo Sinha, Juhi Bansal
Objectives: Diffuse axonal injury is one of the major causes of unconsciousness, profound neurologic deficits and persistent vegetative state after head trauma. In recent years, MR imaging has been gaining popularity as an adjunctive imaging method in patients with DAI. Our study aims to assess the relative diagnostic and prognostic capability of various MRI sequences. Patients and Methods: Retrospective observational study done in 1 year duration on 30 DAI patients...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29682029/meningioma-consistency-correlation-between-magnetic-resonance-imaging-characteristics-operative-findings-and-histopathological-features
#12
Mahmoud Alyamany, Mohammad M Alshardan, Abdullah Abu Jamea, Nahid ElBakry, Lahbib Soualmi, Yasser Orz
Introduction: Intracranial meningiomas account for 30% of all primary intracranial tumors. Surgical resection remains the mainstay of the treatment for meningiomas. The magnetic resonance of intracranial meningiomas has been largely discussed in many reports of the radiological and neurosurgical literature. To date, a few studies have been attempted to differentiate the tumor characteristics of meningiomas based on magnetic resonance imaging (MRI) studies. Objective: The objective of the study is to evaluate the relationship between MRI signal characteristics of intracranial meningiomas and consistency of tumor using objective measures...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29672236/the-brain-health-index-towards-a-combined-measure-of-neurovascular-and-neurodegenerative-structural-brain-injury
#13
David Alexander Dickie, Maria Del C Valdés Hernández, Stephen D Makin, Julie Staals, Stewart J Wiseman, Mark E Bastin, Joanna M Wardlaw
Background A structural magnetic resonance imaging measure of combined neurovascular and neurodegenerative burden may be useful as these features often coexist in older people, stroke and dementia. Aim We aimed to develop a new automated approach for quantifying visible brain injury from small vessel disease and brain atrophy in a single measure, the brain health index. Materials and methods We computed brain health index in N = 288 participants using voxel-based Gaussian mixture model cluster analysis of T1, T2, T2*, and FLAIR magnetic resonance imaging...
January 1, 2018: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29627018/bilateral-wallerian-degeneration-of-the-middle-cerebellar-peduncles-secondary-to-pontine-infarction-a-case-series
#14
Yaoyao Shen, Wen Jian, Juan Li, Tingmin Dai, Bing Bao, Hongbing Nie
OBJECTIVE: Wallerian degeneration (WD) of middle cerebellar peduncles (MCPs) secondary to pontine infarction is rarely reported in the literature. Our aim in this study is to characterize its clinical and neuroradiological features. METHODS: A retrospective review of 7 patients from a single institution was conducted. Only patients with pontine infarction and subsequent degeneration of the MCPs were included in the analysis. The features of clinical presentation and neuroimaging finding were summarized by our experienced neurologists...
May 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29624729/kiki-net-cross-domain-convolutional-neural-networks-for-reconstructing-undersampled-magnetic-resonance-images
#15
Taejoon Eo, Yohan Jun, Taeseong Kim, Jinseong Jang, Ho-Joon Lee, Dosik Hwang
PURPOSE: To demonstrate accurate MR image reconstruction from undersampled k-space data using cross-domain convolutional neural networks (CNNs) METHODS: Cross-domain CNNs consist of 3 components: (1) a deep CNN operating on the k-space (KCNN), (2) a deep CNN operating on an image domain (ICNN), and (3) an interleaved data consistency operations. These components are alternately applied, and each CNN is trained to minimize the loss between the reconstructed and corresponding fully sampled k-spaces...
April 6, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29605275/magnetic-resonance-imaging-and-positron-emission-tomography-in-anti-nmda-receptor-encephalitis-a-systematic-review
#16
REVIEW
Stephen Bacchi, Kyle Franke, Dasith Wewegama, Edward Needham, Sandy Patel, David Menon
Due to a variety of clinical manifestations anti-N-methyl-d-aspartate (NMDA) receptor encephalitis may be difficult to diagnose. Magnetic resonance imaging (MRI) may be used as a component of the workup for encephalopathy. However, the use of MRI in anti-NMDA encephalitis is complicated by wide-ranging reports regarding the frequency of normal MRI findings in this disease. Positron emission tomography (PET) is a modality of imaging that may assess functional rather than structural disturbances. Therefore, this review was conducted to summarise published studies regarding the use of MRI and PET in the diagnosis of anti-NMDA receptor encephalitis...
March 28, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29599171/signal-change-of-acute-cortical-and-juxtacortical-microinfarction-on-follow-up-mri
#17
M Miyata, S Kakeda, T Yoneda, S Ide, K Watanabe, J Moriya, Y Korogi
BACKGROUND AND PURPOSE: Although the clinical importance of cortical microinfarcts has become well-recognized recently, the evolution of cortical microinfarcts on MR imaging is not fully understood. The aim of this study was to examine the temporal changes in acute cortical microinfarcts using susceptibility-weighted imaging and conventional MR imaging. MATERIALS AND METHODS: Patients with acute infarcts located in the cortical and/or juxtacortical region measuring ≤10 mm in axial diameter based on diffusion-weighted imaging who had a follow-up 3T MR imaging were retrospectively included in the study...
March 29, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29596475/sensitivity-of-different-mri-sequences-in-the-early-detection-of-melanoma-brain-metastases
#18
Katerina Deike-Hofmann, Daniel Thünemann, Michael O Breckwoldt, Daniel Schwarz, Alexander Radbruch, Alexander Enk, Martin Bendszus, Jessica Hassel, Heinz-Peter Schlemmer, Philipp Bäumer
BACKGROUND: After the emergence of new MRI techniques such as susceptibility- and diffusion-weighted imaging (SWI and DWI) and because of specific imaging characteristics of melanoma brain metastases (MBM), it is unclear which MRI sequences are most beneficial for detection of MBM. This study was performed to investigate the sensitivity of six clinical MRI sequences in the early detection of MBM. METHODS: Medical records of all melanoma patients referred to our center between November 2005 and December 2016 were reviewed for presence of MBM...
2018: PloS One
https://www.readbyqxmd.com/read/29590424/the-t2-flair-mismatch-sign-as-an-imaging-marker-for-non-enhancing-idh-mutant-1p-19q-intact-lower-grade-glioma-a-validation-study
#19
Martinus P G Broen, Marion Smits, Maarten M J Wijnenga, Hendrikus J Dubbink, Monique H M E Anten, Olaf E M G Schijns, Jan Beckervordersandforth, Alida A Postma, Martin J van den Bent
Background: The purpose of this study was to assess the reproducibility of the previously described T2-FLAIR mismatch sign as a specific imaging marker in non-enhancing isocitrate dehydrogenase (IDH) mutant, 1p/19q non-codeleted lower grade glioma (LGG), encompassing both diffuse and anaplastic astrocytoma. Methods: MR scans (n=154) from three separate databases with genotyped LGG were evaluated by two independent reviewers to assess (i) presence/absence of "T2-FLAIR mismatch" sign and (ii) presence/absence of homogenous signal on T2WI...
March 26, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29556697/mri-in-mild-pediatric-traumatic-brain-injury-diagnostic-overkill-or-useful-tool
#20
Gesa Cohrs, Monika Huhndorf, Nils Niemczyk, Lukas J Volz, Alexander Bernsmeier, Ash Singhal, Naomi Larsen, Michael Synowitz, Friederike Knerlich-Lukoschus
PURPOSE: Magnetic resonance imaging (MRI) is a sensitive imaging tool which lacks the burden of ionizing radiation. It is not established as primary diagnostic tool in traumatic brain injury (TBI). The purpose of this study was to evaluate the usefulness of MRI as initial imaging modality in the emergency management of mild pediatric TBI. METHODS: Children (0-18 years, sub-divided in four age-groups) with mild TBI who received MRI in the emergency department were identified...
March 19, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
keyword
keyword
37059
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"