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https://www.readbyqxmd.com/read/29656621/effect-of-myoarchitectonic-spinolaminoplasty-on-concurrent-hypertension-in-patients-with-cervical-spondylotic-myelopathy
#1
Kazushige Itoki, Ryu Kurokawa, Tetsuro Shingo, Phyo Kim
OBJECTIVE: When treating patients with cervical spondylotic myelopathy (CSM), we often note amelioration in concomitant hypertension after surgery. To assess the effects of surgery and the mechanisms thereof, blood pressure (BP) and parasympathetic nervous activity were monitored prospectively in CSM patients undergoing surgery. METHODS: Sixty-eight consecutive CSM patients who underwent surgery with myoarchitectonic spinolaminoplasty were enrolled. BP and electrocardiography were recorded preoperatively and at 1, 3, and 6 months postoperatively...
March 2018: Neurospine
https://www.readbyqxmd.com/read/29656584/improving-lymph-node-characterization-in-staging-malignant-lymphoma-using-first-order-adc-texture-analysis-from-whole-body-diffusion-weighted-mri
#2
Katja N De Paepe, Frederik De Keyzer, Pascal Wolter, Oliver Bechter, Daan Dierickx, Ann Janssens, Gregor Verhoef, Raymond Oyen, Vincent Vandecaveye
BACKGROUND: Correct staging and treatment initiation in malignant lymphoma depends on accurate lymph node characterization. However, nodal assessment based on conventional and diffusion-weighted (DWI) MRI remains challenging, particularly in smaller nodes. PURPOSE: To evaluate first-order apparent diffusion coefficient (ADC) texture parameters compared to mean ADC for lymph node characterization in non-Hodgkin lymphoma (NHL) using whole-body DWI (WB-DWI). STUDY TYPE: Retrospective...
April 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29656284/findings-of-optical-coherence-tomography-angiography-in-best-vitelliform-macular-dystrophy
#3
Xiao Na Wang, Qi Sheng You, Qian Li, Yang Li, Yu Mao, Feng Hu, Hui Ying Zhao, Frank F Tsai, Xiao Yan Peng
PURPOSE: To evaluate the vascular anatomy of eyes with Best vitelliform macular dystrophy (BVMD) using optical coherence tomography angiography (OCTA). METHODS: This retrospective case-control study enrolled 11 consecutive BVMD patients and 13 age-matched healthy participants. Both eyes of each participant were imaged using a macular OCTA scan (3 × 3 mm) by 70-kHz 840-nm spectral-domain OCT. The flow signal was calculated using the split-spectrum amplitude-decorrelation angiography (SSADA) algorithm...
April 13, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29656031/cerebral-small-vessel-disease-and-risk-of-incident-stroke-dementia-and-depression-and-all-cause-mortality-a-systematic-review-and-meta-analysis
#4
REVIEW
S P Rensma, T T van Sloten, L J Launer, C D A Stehouwer
MRI features of cerebral small vessel disease, i.e. white matter hyperintensities, lacunes, microbleeds, perivascular spaces, and cerebral atrophy, may be associated with clinical events, but the strength of these associations remains unclear. We conducted a systematic review and meta-analysis on the association between these features and incident ischaemic and haemorrhagic stroke, all-cause dementia and depression, and all-cause mortality. For the association with stroke, 36 studies were identified (number of individuals/events [n] = 37,987/4,087), for dementia 28 (n = 16,458/1,709), for depression nine (n = 9,538/1,746), and for mortality 28 (n = 23,031/2,558)...
April 12, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29651769/superolateral-hoffa-s-fat-pad-shfp-oedema-and-patellar-cartilage-volume-loss-quantitative-analysis-using-longitudinal-data-from-the-foundation-for-the-national-institute-of-health-fnih-osteoarthritis-biomarkers-consortium
#5
Arya Haj-Mirzaian, Ali Guermazi, Nima Hafezi-Nejad, Christopher Sereni, Michael Hakky, David J Hunter, Bashir Zikria, Frank W Roemer, Shadpour Demehri
OBJECTIVES: To determine the association of superolateral Hoffa's fat pad (SHFP) oedema and patellofemoral joint structural damage in participants of Foundation for the National Institute of Health Osteoarthritis Biomarkers Consortium study. METHODS: Baseline and 24-month MRIs of 600 subjects were assessed. The presence of SHFP oedema (using 0-3 grading scale) and patellar morphology metrics were determined using baseline MRI. Quantitative patellar cartilage volume and semi-quantitative MRI osteoarthritis knee score (MOAKS) variables were extracted...
April 12, 2018: European Radiology
https://www.readbyqxmd.com/read/29650780/differentiating-atypical-hemangiomas-and-metastatic-vertebral-lesions-the-role-of-t1-weighted-dynamic-contrast-enhanced-mri
#6
K A Morales, J Arevalo-Perez, K K Peck, A I Holodny, E Lis, S Karimi
BACKGROUND AND PURPOSE: Vertebral hemangiomas are benign vascular lesions that are almost always incidentally found in the spine. Their classic typical hyperintense appearance on T1- and T2-weighted MR images is diagnostic. Unfortunately, not all hemangiomas have the typical appearance, and they can mimic metastases on routine MR imaging. These are generally referred to as atypical hemangiomas and can result in misdiagnosis and ultimately additional imaging, biopsy, and unnecessary costs...
April 12, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29649851/primary-malignant-melanoma-in-the-pineal-region-case-report-and-literature-review
#7
Christopher Wendel, Denis Laurent Kaech, Martin Woodtli
BACKGROUND:  Primary pineal malignant melanoma is a rare type of primary central nervous system melanoma with only 19 cases reported in the literature. CASE REPORT:  We present a case of a 53-year-old man with primary melanoma of the pineal region. He presented to the emergency department with gait unsteadiness and ataxia. Magnetic resonance imaging (MRI) revealed a 22 × 17 × 22-mm mass in the pineal region. On MRI the tumor was hyperintense in T1, isointense in T2, and on T1-weighted images with gadolinium enhancement it appeared homogeneously hyperintense with hypointense spots...
April 12, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29648842/ethnoracial-differences-in-brain-structure-change-and-cognitive-change
#8
Brandon E Gavett, Evan Fletcher, Danielle Harvey, Sarah Tomaszewski Farias, John Olichney, Laurel Beckett, Charles DeCarli, Dan Mungas
OBJECTIVE: The purpose of this study was to examine longitudinal associations between structural MRI and cognition in a diverse sample. METHOD: Older adults (n = 444; Mage = 74.5)-121 African Americans, 212 Whites, and 111 Hispanics-underwent an average of 5.3 annual study visits. Approximately half were cognitively normal at baseline (global Clinical Dementia Rating M = 0.5). Of the patients with dementia, most (79%) were diagnosed with Alzheimer's disease (AD)...
April 12, 2018: Neuropsychology
https://www.readbyqxmd.com/read/29644327/regional-tract-specific-white-matter-hyperintensities-are-associated-with-patterns-to-aging-related-brain-atrophy-via-vascular-risk-factors-but-also-independently
#9
Mohamad Habes, Guray Erus, Jon B Toledo, Nick Bryan, Deborah Janowitz, Jimit Doshi, Henry Völzke, Ulf Schminke, Wolfgang Hoffmann, Hans J Grabe, David A Wolk, Christos Davatzikos
Introduction: We sought to investigate associations of regional white matter hyperintensities (WMHs) within white matter (WM) tracts with cardiovascular risk and brain aging-related atrophy throughout adulthood in the general population, leveraging state of the art pattern analysis methods. Methods: We analyzed a large sample (n = 2367) from the Study of Health in Pomerania, Germany (range 20-90 years). WMHs were automatically segmented on T1-weighted and fluid-attenuated inversion recovery magnetic resonance images, and WMH volumes were calculated in WM regions defined using the John Hopkins University WM tractography atlas...
2018: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/29643322/metabolically-healthy-obesity-and-risk-of-leukoaraiosis-a-population-based-cross-sectional-study
#10
Takuro Okamura, Yoshitaka Hashimoto, Masahide Hamaguchi, Akihiro Ohbora, Takao Kojima, Michiaki Fukui
Metabolically healthy obese (MHO) individual is known to be defended from the metabolic complications of obesity. Leukoaraiosis, which is commonly detected on brain magnetic resonance imaging (MRI), is now recognized as a risk of stroke, dementia and death. However, the association between MHO and the prevalence of leukoaraiosis is unclear. In this cross-sectional study of 796 participants who received a medical examination program, we investigated the association between MHO and the prevalence of leukoaraiosis...
April 10, 2018: Endocrine Journal
https://www.readbyqxmd.com/read/29629525/high-dietary-glycemic-load-is-associated-with-poor-functional-outcome-in-patients-with-acute-cerebral-infarction
#11
Tae Jin Song, Yoonkyung Chang, Min Young Chun, Chan Young Lee, A Ram Kim, Yuri Kim, Yong Jae Kim
BACKGROUND AND PURPOSE: Elevated postprandial blood glucose is a critical risk factor for stroke. The dietary glycemic load (GL) and glycemic index (GI) are frequently used as markers of the postprandial blood glucose response to estimate the overall glycemic effect of diets. We hypothesized that high dietary GL, GI, or total carbohydrate intake is associated with a poor functional outcome in patients with acute ischemic stroke. METHODS: We prospectively included 263 first-ever ischemic stroke patients who completed a semiquantitative food-frequency questionnaire...
April 2018: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/29627833/small-hyperintensities-in-the-area-of-the-perforating-arteries-in-patients-with-seizure
#12
Nobuyuki Izutsu, Yasunori Fujimoto, Naoaki Yamada, Ryuichiro Kajikawa, Kazuhiro Yoshimura, Munenori Nagashima, Akatsuki Wakayama, Toshiki Yoshimine
BACKGROUND/AIM: We previously observed spotty hyperintense lesions in the region of the perforating arteries on peri-ictal diffusion-weighted imaging (DWI); however, no report has formally described these findings. The aim of this study was to investigate focal intensities on peri-ictal DWI, and to evaluate the clinical significance of these lesions. METHODS: We conducted a retrospective review of 677 consecutive patients with seizure who completed peri-ictal DWI within 24 h after seizure onset...
April 6, 2018: European Neurology
https://www.readbyqxmd.com/read/29627018/bilateral-wallerian-degeneration-of-the-middle-cerebellar-peduncles-secondary-to-pontine-infarction-a-case-series
#13
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/29627015/spinal-cord-infarction-clinical-and-imaging-insights-from-the-periprocedural-setting
#14
Nicholas L Zalewski, Alejandro A Rabinstein, Karl N Krecke, Robert D Brown, Eelco F M Wijdicks, Brian G Weinshenker, Derrick A Doolittle, Eoin P Flanagan
OBJECTIVE: Describe the range of procedures associated with spinal cord infarction (SCI) as a complication of a medical/surgical procedure and define clinical and imaging characteristics that could be applied to help diagnose spontaneous SCI, where the diagnosis is often less secure. METHODS: We used an institution-based search tool to identify patients evaluated at Mayo Clinic, Rochester, MN from 1997 to 2016 with a periprocedural SCI. We performed a descriptive analysis of clinical features, MRI and other laboratory findings, and outcome...
May 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29627006/predictors-of-cognitive-impairment-in-multiple-system-atrophy
#15
Masahiro Hatakeyama, Tomoe Sato, Tetsuya Takahashi, Masato Kanazawa, Osamu Onodera, Masatoyo Nishizawa, Takayoshi Shimohata
OBJECTIVE: To determine predictors of cognitive impairment and frontal dysfunction in patients with multiple system atrophy (MSA). METHODS: We recruited 59 patients with MSA and determined the predictors of a decline in the Mini-Mental State Examination (MMSE) and Frontal Assessment Battery (FAB) scores. RESULTS: The MMSE scores negatively correlated with disease duration, Unified MSA Rating Scale (UMSARS) part 1 and 4 scores, and residual urine volume, and positively correlated with the coefficient of variation of electrocardiographic RR intervals...
May 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29626359/simultaneous-ph-sensitive-and-oxygen-sensitive-mri-of-human-gliomas-at-3-t-using-multi-echo-amine-proton-chemical-exchange-saturation-transfer-spin-and-gradient-echo-echo-planar-imaging-cest-sage-epi
#16
Robert J Harris, Jingwen Yao, Ararat Chakhoyan, Catalina Raymond, Kevin Leu, Linda M Liau, Phioanh L Nghiemphu, Albert Lai, Noriko Salamon, Whitney B Pope, Timothy F Cloughesy, Benjamin M Ellingson
PURPOSE: To introduce a new pH-sensitive and oxygen-sensitive MRI technique using amine proton CEST echo spin-and-gradient echo (SAGE) EPI (CEST-SAGE-EPI). METHODS: pH-weighting was obtained using CEST estimations of magnetization transfer ratio asymmetry (MTRasym ) at 3 ppm, and oxygen-weighting was obtained using R2' measurements. Glutamine concentration, pH, and relaxation rates were varied in phantoms to validate simulations and estimate relaxation rates. The values of MTRasym and R2' in normal-appearing white matter, T2 hyperintensity, contrast enhancement, and macroscopic necrosis were measured in 47 gliomas...
April 6, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29626258/mr-elastography-in-primary-sclerosing-cholangitis-correlating-liver-stiffness-with-bile-duct-strictures-and-parenchymal-changes
#17
Candice A Bookwalter, Sudhakar K Venkatesh, John E Eaton, Thomas D Smyrk, Richard L Ehman
AIM: To determine correlation of liver stiffness measured by MR Elastography (MRE) with biliary abnormalities on MR Cholangiopancreatography (MRCP) and MRI parenchymal features in patients with primary sclerosing cholangitis (PSC). METHODS: Fifty-five patients with PSC who underwent MRI of the liver with MRCP and MRE were retrospectively evaluated. Two board-certified abdominal radiologists in agreement reviewed the MRI, MRCP, and MRE images. The biliary tree was evaluated for stricture, dilatation, wall enhancement, and thickening at segmental duct, right main duct, left main duct, and common bile duct levels...
April 7, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29622707/paediatric-non-ketotic-hyperglycaemic-hemichorea-hemiballismus
#18
Cezar Thomas Reyes Suratos, James Albert Edward Lim Benitez, Sheen Corvera Urquiza, Cheryl Anne Lubaton Sacro
Non-ketotic hyperglycaemic hemichorea-hemiballismus (NHHH) is commonly seen among elderly Asian women with type 2 diabetes mellitus. Here, we present a case of a 16-year-old Filipina with type 1 diabetes mellitus who is poorly compliant to her medications and subsequently developed right hemichorea-hemiballismus (HH). She was initially admitted with hyperglycaemia but was negative for ketonuria or metabolic acidosis. Neuroimaging showed bilateral lentiform nuclei and left caudate hyperdensities on CT and T1-weighted hyperintensity on MRI...
April 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29622553/edge-contrast-of-the-flair-hyperintense-region-predicts-survival-in-patients-with-high-grade-gliomas-following-treatment-with-bevacizumab
#19
N Bahrami, D Piccioni, R Karunamuni, Y-H Chang, N White, R Delfanti, T M Seibert, J A Hattangadi-Gluth, A Dale, N Farid, C R McDonald
BACKGROUND AND PURPOSE: Treatment with bevacizumab is standard of care for recurrent high-grade gliomas; however, monitoring response to treatment following bevacizumab remains a challenge. The purpose of this study was to determine whether quantifying the sharpness of the fluid-attenuated inversion recovery hyperintense border using a measure derived from texture analysis-edge contrast-improves the evaluation of response to bevacizumab in patients with high-grade gliomas. MATERIALS AND METHODS: MRIs were evaluated in 33 patients with high-grade gliomas before and after the initiation of bevacizumab...
April 5, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29620664/adult-renal-neuroblastoma-a-case-report-and-literature-review
#20
Ming-De Huang, Li-Sheng Hsu, Huei-Chieh Chuang, Wei-Yu Lin, Wei-Hsiu Lin, Chih-Wei Yen, Min-Lang Chen
RATIONALE: Adult renal neuroblastoma (NB) is extremely rare, and there have been only a few cases previously described in the literature. We report a case of adult renal NB and summarize the clinical and imaging features of the reported cases. PATIENT CONCERNS: A 41-year-old female was admitted to our hospital with a chief complaint of gross hematuria that had persisted for a month. Nonenhanced computed tomography (CT) revealed a hypodense right renal mass without calcification...
April 2018: Medicine (Baltimore)
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