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https://www.readbyqxmd.com/read/28343367/magnetic-resonance-imaging-features-of-leukoaraiosis-in-elderly-dogs
#1
Elena Scarpante, Giunio Bruto Cherubini, Alberta de Stefani, Olivier Taeymans
Leukoaraiosis is a descriptive term used to designate bilateral, symmetrical, white matter lesions identified in brains of elderly human patients. These lesions are isointense to normal in magnetic resonance imaging (MRI) T1-weighted pulse sequences, non-contrast enhancing, and hyperintense in T2-weighted and FLAIR pulse sequences. Pathophysiologic mechanisms for leukoaraiosis remain incompletely understood; however, an ischemic origin is currently being favored. Age-related changes, such as brain atrophy, ventricular enlargement, and well-demarcated sulci, have also been previously described in dogs over 9 years of age...
March 26, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28342654/the-role-of-the-signal-intensity-ratio-on-fluid-attenuated-inversion-recovery-in-stroke-patients-achieving-successful-recanalization-with-endovascular-treatment
#2
Taehoon Kim, Jong-Won Chung, Myung Suk Jang, Mi Hwa Yang, Sang-Hwa Lee, Beom Joon Kim, Moon-Ku Han, Jae Hyoung Kim, Cheolkyu Jung, Jae-Sung Lim, Hee-Joon Bae
BACKGROUND: This study aimed to investigate whether fluid-attenuated inversion recovery (FLAIR) imaging hyperintensity can be used as a surrogate marker for the severity of ischemic insult and predict lesion growth. METHODS: Based on a prospective stroke registry database, we identified patients with ischemic stroke who were treated with endovascular treatment (EVT) within 8 hours of onset and achieved successful recanalization (modified thrombolysis in cerebral infarction ≥2B)...
March 22, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28333012/cerebral-cortex-regions-selectively-vulnerable-to-radiation-dose-dependent-atrophy
#3
Tyler M Seibert, Roshan Karunamuni, Samar Kaifi, Jeffrey Burkeen, Michael Connor, Anitha Priya Krishnan, Nathan S White, Nikdokht Farid, Hauke Bartsch, Vyacheslav Murzin, Tanya T Nguyen, Vitali Moiseenko, James B Brewer, Carrie R McDonald, Anders M Dale, Jona A Hattangadi-Gluth
PURPOSE AND OBJECTIVES: Neurologic deficits after brain radiation therapy (RT) typically involve decline in higher-order cognitive functions such as attention and memory rather than sensory defects or paralysis. We sought to determine whether areas of the cortex critical to cognition are selectively vulnerable to radiation dose-dependent atrophy. METHODS AND MATERIALS: We measured change in cortical thickness in 54 primary brain tumor patients who underwent fractionated, partial brain RT...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28330066/endolymphatic-hydrops-imaging-why-oving-from-semi-quantitative-to-anatomical-based-evaluation
#4
Michael Eliezer, Irène Tropres, Alexandre Krainik, Arnaud Attye
INTRODUCTION: Recently, the semi-quantitative ratio grading for endolymphatic hydrops (EH) was found as none specific of MD because all healthy subjects referred with at least one hydrops location with this grading method and 3D-FLAIR sequence. The objectives of this study were to assess the EH prevalence in MD using both the semi-quantitative ratio method of grading and the Saccule to Utricle Ration Inversion (SURI) technique with two 3D-FLAIR sequences, closely similar except for the inversion time of the sequence...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329953/imaging-feature-in-pres-syndrome-report-of-6-cases
#5
H El Mhabrech, S Karma, F Jbeli, M Dakkem, A Kraiem, C Hafsa
OBJECTIVES: Posterior reversible encephalopathy syndrome (PRES) is a rare syndrome. The pathophysiology is poorly understood. Computed tomography (CT) and magnetic resonance imaging (MRI) findings are characteristic of the diagnosis and diffusion weighted image has been also suggested having a prognostic value. We report this unusual neurologic complication of peripartumin except any pre-existent pathology of the pregnancy. MATERIEL AND METHODS: CT, MR findings and relevant clinical data of the patients were retrospectively reviewed on 5 cases between 2011 and 2012 in our radiologic department...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28325002/radiomic-analysis-of-multi-contrast-brain-mri-for-the-prediction-of-survival-in-patients-with-glioblastoma-multiforme
#6
Ahmad Chaddad, Christian Desrosiers, Matthew Toews
Image texture features are effective at characterizing the microstructure of cancerous tissues. This paper proposes predicting the survival times of glioblastoma multiforme (GBM) patients using texture features extracted in multi-contrast brain MRI images. Texture features are derived locally from contrast enhancement, necrosis and edema regions in T1-weighted post-contrast and fluid-attenuated inversion-recovery (FLAIR) MRIs, based on the gray-level co-occurrence matrix representation. A statistical analysis based on the Kaplan-Meier method and log-rank test is used to identify the texture features related with the overall survival of GBM patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324197/the-spectrum-of-magnetic-resonance-findings-in-cerebrotendinous-xanthomatosis-redefinition-and-evidence-of-new-markers-of-disease-progression
#7
Andrea Mignarri, Maria Teresa Dotti, Antonio Federico, Nicola De Stefano, Marco Battaglini, Irene Grazzini, Paolo Galluzzi, Lucia Monti
Cerebrotendinous xanthomatosis (CTX) is a metabolic disease characterized by systemic signs and neurological impairment, which can be prevented if chenodeoxycholic acid (CDCA) treatment is started early. Despite brain MRI represents an essential diagnostic tool, the spectrum of findings is worth to be reappraised, and follow-up data are needed. We performed clinical evaluation and brain MRI in 38 CTX patients. Sixteen of them who were untreated at baseline examination underwent clinical and MRI follow-up after long-term treatment with CDCA...
March 21, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28320165/hla-genotype-as-a-marker-of-multiple-sclerosis-prognosis-a-pilot-study
#8
Andreas P Lysandropoulos, Nicolas Mavroudakis, Massimo Pandolfo, Kaoutar El Hafsi, Wim van Hecke, Anke Maertens, Thibo Billiet, Annemie Ribbens
OBJECTIVE: The identification of a biomarker with prognostic value is an unmet need in multiple sclerosis (MS). The objective of this study was to investigate a possible association of HLA genotype with disease status and progression in MS, based on comprehensive and sensitive clinical and magnetic resonance imaging (MRI) parameters to measure disease effects. METHOD: A total of 118 MS patients (79 females, 39 males) underwent HLA typing. Patient MS status was assessed at two time points in a 2-year interval, based on clinical scores (including EDSS, MSSS, T25FW, 9-HPT, SDMT, BVMT, CVLT-II) and MRI evaluations...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28318729/acute-cerebellitis-in-paediatric-patients-our-experience
#9
J P García-Iñiguez, F J López-Pisón, P Madurga Revilla, I Montejo Gañán, M Domínguez Cajal, L Monge Galindo, S B Sánchez Marco, M C García Jiménez
INTRODUCTION: Acute cerebellitis is a rare inflammatory disease with a highly variable clinical course that ranges from benign self-limiting symptoms to a fulminant presentation associated with a high risk of death due to compression of the posterior fossa, acute hydrocephalus, and intracranial hypertension. METHODS: We reviewed clinical, laboratory, and radiological findings from children diagnosed with acute cerebellitis between May 2007 and November 2016. We analysed treatments and clinical and radiological progression...
March 15, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28317458/use-of-the-instantaneous-wave-free-ratio-or-fractional-flow-reserve-in-pci
#10
Justin E Davies, Sayan Sen, Hakim-Moulay Dehbi, Rasha Al-Lamee, Ricardo Petraco, Sukhjinder S Nijjer, Ravinay Bhindi, Sam J Lehman, Darren Walters, James Sapontis, Luc Janssens, Christiaan J Vrints, Ahmed Khashaba, Mika Laine, Eric Van Belle, Florian Krackhardt, Waldemar Bojara, Olaf Going, Tobias Härle, Ciro Indolfi, Giampaolo Niccoli, Flavo Ribichini, Nobuhiro Tanaka, Hiroyoshi Yokoi, Hiroaki Takashima, Yuetsu Kikuta, Andrejs Erglis, Hugo Vinhas, Pedro Canas Silva, Sérgio B Baptista, Ali Alghamdi, Farrel Hellig, Bon-Kwon Koo, Chang-Wook Nam, Eun-Seok Shin, Joon-Hyung Doh, Salvatore Brugaletta, Eduardo Alegria-Barrero, Martijin Meuwissen, Jan J Piek, Niels van Royen, Murat Sezer, Carlo Di Mario, Robert T Gerber, Iqbal S Malik, Andrew S P Sharp, Suneel Talwar, Kare Tang, Habib Samady, John Altman, Arnold H Seto, Jasvindar Singh, Allen Jeremias, Hitoshi Matsuo, Rajesh K Kharbanda, Manesh R Patel, Patrick Serruys, Javier Escaned
Background Coronary revascularization guided by fractional flow reserve (FFR) is associated with better patient outcomes after the procedure than revascularization guided by angiography alone. It is unknown whether the instantaneous wave-free ratio (iFR), an alternative measure that does not require the administration of adenosine, will offer benefits similar to those of FFR. Methods We randomly assigned 2492 patients with coronary artery disease, in a 1:1 ratio, to undergo either iFR-guided or FFR-guided coronary revascularization...
March 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28316994/multiple-factors-involved-in-the-pathogenesis-of-white-matter-lesions
#11
REVIEW
Jing Lin, Dilong Wang, Linfang Lan, Yuhua Fan
White matter lesions (WMLs), also known as leukoaraiosis (LA) or white matter hyperintensities (WMHs), are characterized mainly by hyperintensities on T2-weighted or fluid-attenuated inversion recovery (FLAIR) images. With the aging of the population and the development of imaging technology, the morbidity and diagnostic rates of WMLs are increasing annually. WMLs are not a benign process. They clinically manifest as cognitive decline and the subsequent development of dementia. Although WMLs are important, their pathogenesis is still unclear...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28303374/potentially-reversible-acute-cerebellar-toxicity-associated-with-minnelide
#12
Sara Khanipour Roshan, Anthony D Spano, Alexander M McKinney, David R Nascene
PURPOSE: Minnelide is an experimental antineoplastic agent that is currently the subject of a phase 1 clinical trial for the treatment of pancreatic and gastrointestinal malignancies. In this study, we documented two cases of reversible acute cerebellar toxicity (REACT) associated with Minnelide and compared its radiological manifestations with other cerebellotoxic agents. METHODS: Both patients had histories of progressive metastatic cancer and participated in a phase 1 clinical trial with Minnelide...
March 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28298967/magnetic-resonance-imaging-in-the-assessment-of-brain-involvement-in-alcoholic-and-nonalcoholic-wernicke-s-encephalopathy
#13
Gianvincenzo Sparacia, Andrea Anastasi, Claudia Speciale, Francesco Agnello, Aurelia Banco
AIM: To present the typical and atypical magnetic resonance (MR) imaging findings of alcoholic and non-alcoholic Wernicke's encephalopathy. METHODS: This study included 7 patients with Wernicke's encephalopathy (2 men, 5 women; mean age, 52.3 years) that underwent brain MR examination between January 2012 and March 2016 in a single institution. Three patients were alcoholics and 4 patients were non-alcoholics. MR protocol included a T2-weighted sequence, a fluid attenuation inversion recovery (FLAIR) sequence, a diffusion-weighted sequence (b = 0 and 1000 s/mm(2)), and a contrast-enhanced MR sequence...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28296739/ugt1a1-28-relationship-with-abnormal-total-bilirubin-levels-in-chronic-hepatitis-c-patients-outcomes-from-a-case-control-study
#14
Marcelo Moreira Tavares de Souza, Victor Van Vaisberg, Rodrigo Martins Abreu, Aline Siqueira Ferreira, Camila daSilvaFerreira, Paulo Dominguez Nasser, Helena Scavone Paschoale, Flair José Carrilho, Suzane Kioko Ono
Gilbert syndrome (GS) is a frequent benign clinical condition, marked by intermittent unconjugated hyperbilirubinemia, mostly due to the polymorphism uridine diphosphate-glucuronosyltransferase 1A1*28 (UGT1A1*28). Hyperbilirubinemia has been reported in a GS patient undergoing hepatitis C treatment, and other UGT isoforms polymorphisms have been linked to worse outcomes in viral hepatitis. Yet, little is known to GS contributions' to the liver disease scenario. Our aim was to assess UGT1A1 genotypes' frequency in chronic hepatitis C (CHC) patients and correlate with total bilirubin (TB)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28291429/pathophysiological-consideration-of-medullary-streaks-on-flair-imaging-in-pediatric-moyamoya-disease
#15
Hime Suzuki, Takeshi Mikami, Tomoyoshi Kuribara, Kazuhisa Yoshifuji, Katsuya Komatsu, Yukinori Akiyama, Hirofumi Ohnishi, Kiyohiro Houkin, Nobuhiro Mikuni
OBJECTIVE Medullary streaks detected on fluid-attenuated inversion recovery (FLAIR) imaging have been considered to be reflected ischemic regions in pediatric moyamoya disease. The purpose of this study was to evaluate these medullary streaks both clinically and radiologically and to discuss associated pathophysiological concerns. METHODS The authors retrospectively reviewed data from 14 consecutive pediatric patients with moyamoya disease treated between April 2009 and June 2016. Clinical and radiological features and postoperative imaging changes were analyzed...
March 10, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28290943/bereaved-military-dependent-spouses-and-children-those-left-behind-in-a-decade-of-war-2001-2011
#16
Stephen J Cozza, Joscelyn E Fisher, Jing Zhou, Jill Harrington-LaMorie, Lareina La Flair, Carol S Fullerton, Robert J Ursano
BACKGROUND: U.S. military service members die from a variety of causes (i.e., accidents, combat, illnesses, homicide, suicide, and terrorism) while on duty and in greater numbers during times of war, leaving behind bereaved dependent family members. Identifying characteristics of these dependent families improves our understanding of their unique needs, helps educate service providers who offer assistance to these surviving family members, and better informs policy addressing their health and well-being...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290939/susceptibility-weighted-imaging-and-white-matter-abnormality-findings-in-service-members-with-persistent-cognitive-symptoms-following-mild-traumatic-brain-injury
#17
David F Tate, Maria Gusman, Jonathan Kini, Matthew Reid, Carmen S Velez, Ann Marie Drennon, Douglas B Cooper, Jan E Kennedy, Amy O Bowles, Erin D Bigler, Jeffrey D Lewis, John Ritter, Gerald E York
Mild traumatic brain injury (mTBI) is a major health concern among active duty service members and Veterans returning from combat operations, and it can result in variable clinical and cognitive outcomes. Identifying biomarkers that can improve diagnosis and prognostication has been at the forefront of recent research efforts. The purpose of this study was to compare the sensitivity and specificity of abnormalities identified using more traditional magnetic resonance imaging (MRI) sequences such as fluid attenuation inversion recovery (FLAIR) to more advanced MRI sequences such as susceptibility weighted imaging (SWI) among a cohort of active duty service members experiencing persistent cognitive symptoms after mTBI...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28289940/the-effect-of-hippocampal-function-volume-and-connectivity-on-posterior-cingulate-cortex-functioning-during-episodic-memory-fmri-in-mild-cognitive-impairment
#18
Janne M Papma, Marion Smits, Marius de Groot, Francesco U Mattace Raso, Aad van der Lugt, Henri A Vrooman, Wiro J Niessen, Peter J Koudstaal, John C van Swieten, Frederik M van der Veen, Niels D Prins
OBJECTIVES: Diminished function of the posterior cingulate cortex (PCC) is a typical finding in early Alzheimer's disease (AD). It is hypothesized that in early stage AD, PCC functioning relates to or reflects hippocampal dysfunction or atrophy. The aim of this study was to examine the relationship between hippocampus function, volume and structural connectivity, and PCC activation during an episodic memory task-related fMRI study in mild cognitive impairment (MCI). METHOD: MCI patients (n = 27) underwent episodic memory task-related fMRI, 3D-T1w MRI, 2D T2-FLAIR MRI and diffusion tensor imaging...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28284332/confirmed-case-of-levamisole-associated-multifocal-inflammatory-leukoencephalopathy-in-a-cocaine-user
#19
Jeffrey R Vitt, Ethan G Brown, Daniel S Chow, S Andrew Josephson
Levamisole is a common adulterant in cocaine and has previously been associated with a variety of serious complications including multifocal inflammatory leukoencephalopathy (MIL). There have been several reports of MIL in patients taking cocaine and, though suspected, the presence of levamisole was not confirmed. We present a case of a 63-year-old woman presenting with stupor and spastic quadraparesis found to have urine positive for cocaine and levamisole. An MRI brain revealed innumerable FLAIR hyperintensities with restricted diffusion and incomplete ring-enhancement...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28283598/leptomeningeal-gadolinium-enhancement-across-the-spectrum-of-chronic-neuroinflammatory-diseases
#20
Martina Absinta, Irene C M Cortese, Luisa Vuolo, Govind Nair, Manori P de Alwis, Joan Ohayon, Alessandro Meani, Vittorio Martinelli, Roberta Scotti, Andrea Falini, Bryan R Smith, Avindra Nath, Steven Jacobson, Massimo Filippi, Daniel S Reich
OBJECTIVE: To assess the prevalence and the specificity of leptomeningeal enhancement (LME) on postcontrast T2-fluid-attenuated inversion recovery (FLAIR) MRI in multiple sclerosis (MS) compared to a variety of inflammatory and noninflammatory neurologic conditions assessed in 2 academic research hospitals. METHODS: On 3T postcontrast T2-FLAIR images, the presence of focal gadolinium enhancement was evaluated in the leptomeningeal compartment in 254 people with non-MS neurologic conditions or neurotropic viral infections...
March 10, 2017: Neurology
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