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Fat magnetic resonance imaging

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https://www.readbyqxmd.com/read/28531456/multi-frequency-bioelectrical-impedance-analysis-bia-compared-to-magnetic-resonance-imaging-mri-for-estimation-of-fat-free-mass-in-colorectal-cancer-patients-treated-with-chemotherapy
#1
Stine S Palle, Line T Møllehave, Zahra Taheri-Kadkhoda, Susanne Johansen, Lisbeth Larsen, Janne W Hansen, Nikolaj K G Jensen, Anette O Elingaard, Alice H Møller, Karen Larsen, Jens R Andersen
BACKGROUND: Changes in body composition in cancer patients during chemotherapy are associated with treatment related toxicities or mortalities. Thus, it is relevant to identify accessible, relatively inexpensive, portable and reliable tools for evaluation of body composition in cancer patients during the course of their treatments. OBJECTIVE: To examine relationships between single cross-sectional thighs magnetic resonance imaging (MRI), skeletal muscle mass (SM) as reference and multi-frequency bioelectrical impedance analysis (BIA) fat free mass (FFM) in patients with colorectal cancer undergoing chemotherapy...
December 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28530680/the-effect-of-glucose-dependent-insulinotropic-polypeptide-gip-variants-on-visceral-fat-accumulation-in-han-chinese-populations
#2
T Wang, X Ma, T Tang, K Higuchi, D Peng, R Zhang, M Chen, J Yan, S Wang, D Yan, Z He, F Jiang, Y Bao, W Jia, K Ishida, C Hu
OBJECTIVES: We aim to validate the effects of glucose-dependent insulinotropic polypeptide (GIP) on fat distribution and glucose metabolism in Han Chinese populations. METHODS: We genotyped six tag single-nucleotide polymorphisms (SNPs) of GIP and four tag SNPs of glucose-dependent insulinotropic polypeptide receptor (GIPR) among 2884 community-based individuals from Han Chinese populations. Linear analysis was applied to test the associations of these variants with visceral fat area (VFA) and subcutaneous fat area (SFA) quantified by magnetic resonance imaging as well as glucose-related traits...
May 22, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28523317/mri-as-indicator-of-pulmonary-tuberculosis-activity-from-morphological-to-molecular-level-assessment-a-case-report
#3
Maria Teodora Antuaneta Buzan, Hanelore Herta, Mihaela Maria Coman, Daniela Homorodean, Silviu Andrei Sfrângeu, Carmen Monica Pop
We present the case of an adult patient with active post-primary pulmonary tuberculosis (TB) and discuss specific morphological and textural aspects found at high-field magnetic resonance imaging (MRI) of the lung. The 42-year-old man, heavy smoker, undertook a routine employment medical examination and was admitted to a referral pulmonology and TB center due to the abnormal findings seen on his chest radiography. The patient presented nonspecific symptoms, bilateral bronchial breath at pulmonary auscultation, inflammatory syndrome on the laboratory blood tests and positive sputum smears for acid-fast bacilli, which together with the typical aspect on the chest radiography lead to a diagnosis of post-primary pulmonary TB and administration of specific medication...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28522646/mr-spectroscopy-of-hepatic-fat-and-adiponectin-and-leptin-levels-during-testosterone-therapy-in-type-2-diabetes-a-randomized-double-blinded-placebo-controlled-trial
#4
Line Velling Magnussen, Poul Erik Andersen, Anabel Diaz, Jelena Markovic Ostojic, Kurt Højlund, David M Hougaard, Anders Nymark Christensen, Torben Leo Nielsen, Marianne Skovsager Andersen
BACKGROUND: Men with type 2 diabetes mellitus (T2D) often have lowered testosterone levels and an increased risk of cardiovascular disease (CVD). Ectopic fat increases the risk of CVD, whereas subcutaneous gluteofemoral fat protects against CVD and has a beneficial adipokine secreting profile. HYPOTHESIS: Testosterone replacement therapy (TRT) may reduce the content of ectopic fat and improve the adipokine profile in men with T2D. DESIGN AND METHODS: A randomized, double-blinded, placebo-controlled study in 39 men aged 50-70 years with T2D and bioavailable testosterone levels <7...
May 18, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28520813/pancreatic-fat-content-by-magnetic-resonance-imaging-in-subjects-with-prediabetes-diabetes-and-controls-from-a-general-population-without-cardiovascular-disease
#5
Sophia D Heber, Holger Hetterich, Roberto Lorbeer, Christian Bayerl, Jürgen Machann, Sigrid Auweter, Corinna Storz, Christopher L Schlett, Konstantin Nikolaou, Maximilian Reiser, Annette Peters, Fabian Bamberg
BACKGROUND/OBJECTIVE: Despite the relevance of pancreatic fat content in the development of metabolic diseases, its association with impaired glucose metabolism, diabetes, and other adipose tissue compartments remains unclear. Thus, we determined differences in pancreatic fat content by magnetic resonance imaging (MRI) between subjects with prediabetes, diabetes, and normal controls in a cohort from the general population. METHODS: Subjects without history of cardiovascular disease with established diabetes or prediabetes as well as normal controls were included and underwent whole-body MRI on a 3T scanner...
2017: PloS One
https://www.readbyqxmd.com/read/28514304/diagnostic-and-clinical-application-value-of-magnetic-resonance-imaging-mri-for-progressive-massive-fibrosis-of-coal-worker-pneumoconiosis-case-reports
#6
Lansheng Zhang, Chun Wang, Qiuyue Yan, Tao Zhang, Zhengxiang Han, Guan Jiang
RATIONALE: Using magnetic resonance imaging (MRI), we diagnosed pneumoconiosis by identifying the content and distribution of hydrogen protons in the water molecules in different tissues and lesions. PATIENT CONCERNS: 25 cases of CWP patients with progressive massive fibrosis (PMF) lesions. DIAGNOSES: Patients were correctly diagnosed, with one case each of Phase I and II pneumoconiosis and 23 cases of Phase III pneumoconiosis. INTERVENTIONS: None...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28513264/body-composition-analysis-by-using-bioelectrical-impedance-in-a-young-healthy-chinese-population-methodological-considerations
#7
Wei Chen, Hua Jiang, Jiong-Xian Yang, Hao Yang, Jing-Min Liu, Xiu-Yuan Zhen, Lian-Jun Feng, Jian-Chun Yu
OBJECTIVE: To develop a new bioelectrical impedance analysis (BIA) model for analyzing body composition by using isotope dilution, magnetic resonance imaging (MRI), and dual-energy X-ray absorptiometry (DEXA) as the reference methods in young healthy Chinese populations. METHODS: Thirty healthy participants were enrolled. Their body composition was analyzed using BIA and 3 reference methods. We established a model that uniformed data from 3 references methods (isotope, MRI, and DEXA) into 1 formula...
June 2017: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/28505623/effect-of-a-low-rank-denoising-algorithm-on-quantitative-magnetic-resonance-imaging-based-measures-of-liver-fat-and-iron
#8
Brian C Allen, Felix Lugauer, Dominik Nickel, Lubna Bhatti, Randa A Dafalla, Brian M Dale, Tracy A Jaffe, Mustafa R Bashir
PURPOSE: This study aimed to assess the effect of a low-rank denoising algorithm on quantitative magnetic resonance imaging-based measures of liver fat and iron. MATERIALS AND METHODS: This was an institutional review board-approved, Health Insurance Portability and Accountability Act-compliant, retrospective analysis of 42 consecutive subjects who were imaged at 3T using a multiecho gradient echo sequence that was reconstructed using the multistep adaptive fitting algorithm to obtain quantitative proton density fat fraction (PDFF) and R2* maps (original maps)...
May 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28505622/fat-suppressed-contrast-enhanced-t1-weighted-dynamic-magnetic-resonance-imaging-at-3t-comparison-of-image-quality-between-spectrally-adiabatic-iversion-recovery-and-the-multiecho-dixon-technique-in-imaging-of-the-prostate
#9
Yuji Iyama, Takeshi Nakaura, Masafumi Kidoh, Kazuhiro Katahira, Tomohiro Namimoto, Shoji Morishita, Yasuyuki Yamashita
OBJECTIVE: To compare the quality of fat suppression and image quality between multiecho Dixon technique (mDixon) and spectrally adiabatic iversion recovery (SPAIR) in dynamic contrast-enhanced magnetic resonance imaging of the prostate. METHODS: This prospective study assigned thirty consecutive patients to scanning with SPAIR technique (SPAIR protocol) and another consecutive 30 patients to scanning with mDixon technique (mDixon protocol). We calculated the contrast, signal to noise ratio (SNR), contrast to noise ratio (CNR) and the coefficient of variation between the 2 protocols...
May 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28504921/plasminogen-activator-inhibitor-1-and-pericardial-fat-in-individuals-with-type-2-diabetes-mellitus
#10
Omar Bayomy, Ajay D Rao, Rajesh Garg, Anand Vaidya, Alyssa R Kotin, Beata Reiber, Stephanie Nijmeijer, Marcelo F Di Carli, Michael Jerosch-Herold, Raymond Y Kwong, Gail K Adler
BACKGROUND: Plasminogen activator inhibitor-1 (PAI-1) is implicated in the pathophysiology of cardiovascular disease (CVD) and increased in individuals with type 2 diabetes mellitus (T2DM). Adipose tissue produces PAI-1, and pericardial fat is a CVD risk factor. We sought to determine the relationship between PAI-1 and pericardial fat in males and females with well-controlled T2DM. METHODS: The study population consisted of 32 males and 19 females, aged 35-70 years with T2DM, without clinical evidence of CVD or other active medical problems except for hypertension...
May 15, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28501537/effects-of-exercise-on-liver-fat-and-metabolism-in-alcohol-drinkers
#11
David Houghton, Kate Hallsworth, Christian Thoma, Sophie Cassidy, Timothy Hardy, Sarah Heaps, Kieren G Hollingsworth, Roy Taylor, Christopher P Day, Steve Masson, Stuart McPherson, Quentin M Anstee, Michael I Trenell
BACKGROUND & AIMS: Exercise is an important component of obesity associated disorders and has been shown to reduce markers of non-alcoholic fatty liver disease (NAFLD). However, little is known about how these effects are influenced by alcohol intake. We performed a randomized controlled trial to investigate the effects of exercise on hepatic triglyceride content (HTGC) and metabolism in overweight or obese patients who consume alcohol. METHODS: We performed a prospective study of 27 patients (mean age 54±11years, body mass index [BMI], 31±4kg/m2) with >5% HTGC in the United Kingdom, consuming alcohol (mean 221±75 g/week)...
May 10, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28501343/changes-of-renal-sinus-fat-and-renal-parenchymal-fat-during-an-18-month-randomized-weight-loss-trial
#12
Hila Zelicha, Dan Schwarzfuchs, Ilan Shelef, Yftach Gepner, Gal Tsaban, Lilac Tene, Anat Yaskolka Meir, Avital Bilitzky, Oded Komy, Noa Cohen, Nitzan Bril, Michal Rein, Dana Serfaty, Shira Kenigsbuch, Yoash Chassidim, Benjamin Sarusi, Joachim Thiery, Uta Ceglarek, Michael Stumvoll, Matthias Blüher, Yosef S Haviv, Meir J Stampfer, Assaf Rudich, Iris Shai
BACKGROUND & AIMS: Data regarding the role of kidney adiposity, its clinical implications, and its dynamics during weight-loss are sparse. We investigated the effect of long-term weight-loss induced intervention diets on dynamics of renal-sinus-fat, an ectopic fat depot, and %renal-parenchymal-fat, lipid accumulation within the renal parenchyma. METHODS: We randomized 278 participants with abdominal obesity/dyslipidemia to low-fat or Mediterranean/low-carbohydrate diets, with or without exercise...
May 2, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28495576/quantitative-assessment-of-fatty-infiltration-and-muscle-volume-of-the-rotator-cuff-muscles-using-3-dimensional-2-point-dixon-magnetic-resonance-imaging
#13
Noboru Matsumura, Sota Oguro, Shigeo Okuda, Masahiro Jinzaki, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
BACKGROUND: In patients with rotator cuff tears, muscle degeneration is known to be a predictor of irreparable tears and poor outcomes after surgical repair. Fatty infiltration and volume of the whole muscles constituting the rotator cuff were quantitatively assessed using 3-dimensional 2-point Dixon magnetic resonance imaging. METHODS: Ten shoulders with a partial-thickness tear, 10 shoulders with an isolated supraspinatus tear, and 10 shoulders with a massive tear involving supraspinatus and infraspinatus were compared with 10 control shoulders after matching age and sex...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28495210/3-tesla-23-na-magnetic-resonance-imaging-during-acute-kidney-injury
#14
Matthias Hammon, Susan Grossmann, Peter Linz, Hannes Seuss, Rebecca Hammon, Daniela Rosenhauer, Rolf Janka, Alexander Cavallaro, Friedrich C Luft, Jens Titze, Michael Uder, Anke Dahlmann
RATIONALE AND OBJECTIVES: Sodium and proton magnetic resonance imaging ((23)Na/(1)H-MRI) have shown that muscle and skin can store Na(+) without water. In chronic renal failure and in heart failure, Na(+) mobilization occurs, but is variable depending on age, dialysis vintage, and other features. Na(+) storage depots have not been studied in patients with acute kidney injury (AKI). MATERIALS AND METHODS: We studied 7 patients with AKI (mean age: 51.7 years; range: 25-84) and 14 age-matched and gender-matched healthy controls...
May 8, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28490763/methylglyoxal-induced-glycation-changes-adipose-tissue-vascular-architecture-flow-and-expansion-leading-to-insulin-resistance
#15
Tiago Rodrigues, Paulo Matafome, José Sereno, José Almeida, João Castelhano, Luís Gamas, Christian Neves, Sónia Gonçalves, Catarina Carvalho, Amina Arslanagic, Elinor Wilcken, Rita Fonseca, Ilda Simões, Silvia Vilares Conde, Miguel Castelo-Branco, Raquel Seiça
Microvascular dysfunction has been suggested to trigger adipose tissue dysfunction in obesity. This study investigates the hypothesis that glycation impairs microvascular architecture and expandability with an impact on insulin signalling. Animal models supplemented with methylglyoxal (MG), maintained with a high-fat diet (HFD) or both (HFDMG) were studied for periepididymal adipose (pEAT) tissue hypoxia and local and systemic insulin resistance. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) was used to quantify blood flow in vivo, showing MG-induced reduction of pEAT blood flow...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28487798/orbital-t-cell-lymphoma-with-discrete-enlargements-of-all-extraocular-muscles-bilaterally-in-patient-with-moon-face-countenance
#16
Hideaki Kawakami, Kiyofumi Mochizuki, Hideko Goto, Naoki Watanabe, Takuji Tanaka
Purpose. To report our findings in a case of orbital T-cell lymphoma in which all of the extraocular muscles (EOMs) were bilaterally and discretely enlarged and the patient had a moon face countenance. Case. A 59-year-old woman presented with visual disturbances in her left eye, hyperemia in both eyes, and a moon face countenance. Examinations showed limited upward gaze in the right eye, blepharoptosis, hypertropia, and limited downward and rightward gaze in the left eye. Slit-lamp examination showed only chemosis and hyperemia of both eyes...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/28486977/rapid-cartesian-versus-radial-acquisition-comparison-of-two-sequences-for-hepatobiliary-phase-mri-at-3-tesla-in-patients-with-impaired-breath-hold-capabilities
#17
Johannes Budjan, Philipp Riffel, Melissa M Ong, Stefan O Schoenberg, Ulrike I Attenberger, Daniel Hausmann
BACKGROUND: Hepatocyte-specific gadolinium based contrast agents (HSCA) provide substantial information for the classification of liver lesions in magnetic resonance imaging (MRI). However, breathing artifacts which reduce image quality and diagnostic confidence of hepatobiliary phase acquisitions are regularly observed in clinical routine. The aim of this study was to evaluate two approaches to reduce breathing artifacts for hepatobiliary phase imaging. METHODS: Twenty minutes after administration of a HSCA (gadoxetic acid), a T1-weighted VIBE sequence with radial k-space sampling (radialVIBE, 180 s acquisition time in free breathing) and a highly accelerated Cartesian VIBE with Dixon fat separation (CD-VIBE, CAIPIRINHA acceleration with r = 2 × 2, breath-hold 8-10 s) were acquired in 35 patients (12 female, 57 ± 13 years), who showed breath-holding difficulties in early phases of the examinations...
May 9, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28481336/association-between-individual-fat-depots-and-cardio-metabolic-traits-in-normal-and-overweight-children-adolescents-and-adults
#18
M Hübers, C Geisler, S Plachta-Danielzik, M J Müller
OBJECTIVES: To determine age-related associations between fat mass (FM), regional fat depots and cardiometabolic traits in normal- and overweight children, adolescents and adults. METHODS: Detailed body composition (regional subcutaneous and visceral adipose tissue; SAT, VAT) by whole-body magnetic resonance imaging (MRI), FM and fat-free mass by air-displacement plethysmography, systolic and diastolic blood pressure (SBP, DBP), triglycerides (TG), high-density lipoprotein cholesterol (HDL), plasma glucose and plasma insulin were measured in 433 subjects (BMI: 23...
May 8, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28481195/prevalence-of-fatty-liver-disease-and-hepatic-iron-overload-in-a-northeastern-german-population-by-using-quantitative-mr-imaging
#19
Jens-Peter Kühn, Peter Meffert, Christian Heske, Marie-Luise Kromrey, Carsten O Schmidt, Birger Mensel, Henry Völzke, Markus M Lerch, Diego Hernando, Julia Mayerle, Scott B Reeder
Purpose To quantify liver fat and liver iron content by measurement of confounder-corrected proton density fat fraction (PDFF) and R2* and to identify clinical associations for fatty liver disease and liver iron overload and their prevalence in a large-scale population-based study. Materials and Methods From 2008 to 2013, 2561 white participants (1336 women; median age, 52 years; 25th and 75th quartiles, 42 and 62 years) were prospectively recruited to the Study of Health in Pomerania (SHIP). Complex chemical shift-encoded magnetic resonance (MR) examination of the liver was performed, from which PDFF and R2* were assessed...
May 5, 2017: Radiology
https://www.readbyqxmd.com/read/28476042/the-combination-of-prostate-imaging-reporting-and-data-system-version-2-pi-rads-v2-and-periprostatic-fat-thickness-on-multi-parametric-mri-to-predict-the-presence-of-prostate-cancer
#20
Yudong Cao, Min Cao, Yuke Chen, Wei Yu, Yu Fan, Qing Liu, Ge Gao, Zheng Zhao, Xiaoying Wang, Jie Jin
PURPOSE: To evaluate the auxiliary effectiveness of periprostatic fat thickness (PPFT) on multi-parametric magnetic resonance imaging (mp-MRI) to Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) in predicting the presence of prostate cancer (PCa) and high-grade prostate cancer (HGPCa, Gleason Score ≥ 7). RESULTS: Overall, there were 371 patients (54.3%) with PCa and 292 patients (42.8%) with HGPCa. The mean value of PPFT was 4.04 mm. Multivariate analysis revealed that age, prostatic specific antigen (PSA), volume, PI-RADS score, and PPFT were independent predictors of PCa...
April 18, 2017: Oncotarget
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