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Fat magnetic resonance imaging

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https://www.readbyqxmd.com/read/28643383/multiecho-pseudo-golden-angle-stack-of-stars-thermometry-with-high-spatial-and-temporal-resolution-using-k-space-weighted-image-contrast
#1
Bryant T Svedin, Allison Payne, Bradley D Bolster, Dennis L Parker
PURPOSE: Implement and evaluate a 3D MRI method to measure temperature changes with high spatial and temporal resolution and large field of view. METHODS: A multiecho pseudo-golden angle stack-of-stars (SOS) sequence with k-space weighted image contrast (KWIC) reconstruction was implemented to simultaneously measure multiple quantities, including temperature, initial signal magnitude M(0), transverse relaxation time ( T2*), and water/fat images. Respiration artifacts were corrected using self-navigation...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28643359/an-open-8-channel-parallel-transmission-coil-for-static-and-dynamic-7t-mri-of-the-knee-and-ankle-joints-at-multiple-postures
#2
Jin Jin, Ewald Weber, Aurelien Destruel, Kieran O'Brien, Bassem Henin, Craig Engstrom, Stuart Crozier
PURPOSE: We present the initial in vivo imaging results of an open architecture eight-channel parallel transmission (pTx) transceive radiofrequency (RF) coil array that was designed and constructed for static and dynamic 7T MRI of the knee and ankle joints. METHODS: The pTx coil has a U-shaped dual-row configuration (200 mm overall length longitudinally) that allows static and dynamic imaging of the knee and ankle joints at various postures and during active movements...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28643295/fat-suppression-techniques-for-breast-mri-dixon-versus-spectral-fat-saturation-for-3d-t1-weighted-at-3%C3%A2-t
#3
Anastasia Kalovidouri, Natacha Firmenich, Benedicte M A Delattre, Marlise Picarra, Christoph D Becker, Xavier Montet, Diomidis Botsikas
OBJECTIVE: To compare two fat suppression techniques used for 3D T1-weighted sequence in breast MRI (magnetic resonance imaging), namely Dixon versus spectral fat saturation (fat sat). MATERIALS AND METHODS: All breast MRI examinations performed in a Philips 3 T unit between March 2013 and October 2015 including either a Dixon or a fat sat sequence were retrospectively analyzed. The examinations were subjectively evaluated by two independent experienced readers in a scale of 5 for overall quality of fat suppression, homogeneity of fat suppression, definition of anatomic structures and focal lesions, diagnostic confidence for axillary and internal mammary regions and the presence of artifacts, 1 corresponding to excellent and 5 to non-diagnostic quality...
June 22, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28640216/a-branched-chain-amino-acid-related-metabolic-signature-characterizes-obese-adolescents-with-non-alcoholic-fatty-liver-disease
#4
Martina Goffredo, Nicola Santoro, Domenico Tricò, Cosimo Giannini, Ebe D'Adamo, Hongyu Zhao, Gang Peng, Xiaoqing Yu, Tukiet T Lam, Bridget Pierpont, Sonia Caprio, Raimund I Herzog
Dysregulation of several metabolite pathways, including branched-chain amino acids (BCAAs), are associated with Non-Alcoholic Fatty Liver Disease (NAFLD) and insulin resistance in adults, while studies in youth reported conflicting results. We explored whether, independently of obesity and insulin resistance, obese adolescents with NAFLD display a metabolomic signature consistent with disturbances in amino acid and lipid metabolism. A total of 180 plasma metabolites were measured by a targeted metabolomic approach in 78 obese adolescents with (n = 30) or without (n = 48) NAFLD assessed by magnetic resonance imaging (MRI)...
June 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28640157/association-of-visceral-fat-area-with-the-presence-of-depressive-symptoms-in-chinese-postmenopausal-women-with-normal-glucose-tolerance
#5
Qin Xiong, Xiang Hu, Yiting Xu, Xueli Zhang, Xiaoping Pan, Yunfeng Xiao, Xiaojing Ma, Yuqian Bao, Weiping Jia
OBJECTIVE: Depression is one of the most common mental disorders, and women are more vulnerable to depression than men, particularly during stages of hormonal fluctuations. After menopause, fat accumulation shifts from the subcutaneous area to the visceral area, and the risk of metabolic disorder increases in parallel. The present study aimed to evaluate the association between abdominal fat distribution and the presence of depressive symptoms in postmenopausal women. METHODS: Visceral fat area (VFA) was detected by magnetic resonance imaging...
June 19, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28639049/multiparametric-voxel-based-analyses-of-standardized-uptake-values-and-apparent-diffusion-coefficients-of-soft-tissue-tumours-with-a-positron-emission-tomography-magnetic-resonance-system-preliminary-results
#6
Koji Sagiyama, Yuji Watanabe, Ryotaro Kamei, Sungtak Hong, Satoshi Kawanami, Yoshihiro Matsumoto, Hiroshi Honda
OBJECTIVES: To investigate the usefulness of voxel-based analysis of standardized uptake values (SUVs) and apparent diffusion coefficients (ADCs) for evaluating soft-tissue tumour malignancy with a PET/MR system. METHODS: Thirty-five subjects with either ten low/intermediate-grade tumours or 25 high-grade tumours were prospectively enrolled. Zoomed diffusion-weighted and fluorodeoxyglucose ((18)FDG)-PET images were acquired along with fat-suppressed T2-weighted images (FST2WIs)...
June 20, 2017: European Radiology
https://www.readbyqxmd.com/read/28626403/a-twenty-four-year-old-woman-with-left-flank-lipoma-like-hibernoma
#7
R E Shackelford, M Al Shaarani, J Ansari, E Wei, J Cotelingam
A 24-year-old woman presented with a 5-month history of a left flank mass that was painful on palpation. Magnetic resonance imaging revealed a 10.0 × 6.0 × 2.5 cm mass consistent with lipoma. A fatty lobulated mass was excised and subjected to H&E staining and immunohistochemical analyses. The specimen consisted of mature univacuolated adipocytic cells, with intermixed multivacuolated eosinophilic granular cells. No atypia or hyperchromasia was identified. Most of the cells were S100 positive and Ki-67 immunonegative...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28626099/-a-cross-sectional-study-on-the-correlation-between-mri-signal-for-ipfp-and-knee-osteoarthritis
#8
Song Wu, Hongliang Ba, Jinshen He, Yunjie Liao
To investigate the correlation between MRI signal for infrapatellar fat pad (IPFP) and pathological changes in knee osteoarthritis (KOA), and to analyze the role of IPFP in the development of knee osteoarthritis.
 Methods: A total of 114 subjects (without special knee disease) were enrolled for this study. The intensity of MRI signal for IPFP was determined by fat-suppressed proton-density-weighted turbospin-echo magnetic resonance imaging. Based on the cartilage defects and osteophytes of knee joint, the subjects were divided into a KOA group and a control group...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28624865/bone-marrow-fat-contributes-to-insulin-sensitivity-and-adiponectin-secretion-in-premenopausal-women
#9
Federica Ermetici, Silvia Briganti, Alessandra Delnevo, Paola Cannaò, Giovanni Di Leo, Stefano Benedini, Ileana Terruzzi, Francesco Sardanelli, Livio Luzi
PURPOSE: Bone marrow fat is a functionally distinct adipose tissue that may contribute to systemic metabolism. This study aimed at evaluating a possible association between bone marrow fat and insulin sensitivity indices. METHODS: Fifty obese (n = 23) and non-obese (n = 27) premenopausal women underwent proton magnetic resonance spectroscopy to measure vertebral bone marrow fat content and unsaturation index at L4 level. Abdominal visceral, subcutaneous fat, and epicardial fat were also measured using magnetic resonance imaging...
June 17, 2017: Endocrine
https://www.readbyqxmd.com/read/28624576/agreement-between-magnetic-resonance-imaging-proton-density-fat-fraction-measurements-and-pathologist-assigned-steatosis-grades-of-liver-biopsies-from-adults-with-nonalcoholic-steatohepatitis
#10
Michael S Middleton, Elhamy R Heba, Catherine A Hooker, Mustafa R Bashir, Kathryn J Fowler, Kumar Sandrasegaran, Elizabeth M Brunt, David E Kleiner, Edward Doo, Mark L Van Natta, James Tonascia, Joel E Lavine, Brent A Neuschwander-Tetri, Arun Sanyal, Rohit Loomba, Claude B Sirlin
BACKGROUND & AIMS: We assessed the diagnostic performance of magnetic resonance imaging (MRI) proton density fat fraction (PDFF) in grading hepatic steatosis and change in hepatic steatosis in adults with nonalcoholic steatohepatitis (NASH) in a multi-center study, using central histology as reference. METHODS: We collected data from 113 adults with NASH participating in a multi-center, randomized, double-masked, placebo-controlled, phase 2b trial to compare the efficacy cross-sectionally and longitudinally of obeticholic acid vs placebo...
June 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28619249/metabolism-of-sex-steroids-is-influenced-by-acquired-adiposity-a-study-of-young-adult-male-monozygotic-twin-pairs
#11
Veera Vihma, Jussi Naukkarinen, Ursula Turpeinen, Esa Hämäläinen, Jaakko Kaprio, Aila Rissanen, Sini Heinonen, Antti Hakkarainen, Jesper Lundbom, Nina Lundbom, Tomi S Mikkola, Matti J Tikkanen, Kirsi H Pietiläinen
Obesity and ageing are associated with lower serum testosterone levels in men. How fat distribution or adipose tissue metabolism, independent of genetic factors and age, are related to sex steroid metabolism is less clear. We studied the associations between adiposity and serum sex hormone concentrations, and mRNA expression of genes regulating sex hormone metabolism in adipose tissue in young adult male monozygotic (MZ) twin pairs. The subjects [n=18 pairs; mean age, 32 years; individual body mass indexes (BMIs) 22-36kg/m(2)] included 9 male MZ twin pairs discordant for BMI [intra-pair difference (Δ) in BMI ≥3kg/m(2)]...
June 12, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28616806/ipragliflozin-reduces-epicardial-fat-accumulation-in-non-obese-type-2-diabetic-patients-with-visceral-obesity-a-pilot-study
#12
Tatsuya Fukuda, Ryotaro Bouchi, Masahiro Terashima, Yuriko Sasahara, Masahiro Asakawa, Takato Takeuchi, Yujiro Nakano, Masanori Murakami, Isao Minami, Hajime Izumiyama, Koshi Hashimoto, Takanobu Yoshimoto, Yoshihiro Ogawa
INTRODUCTION: Epicardial fat (EF) was reported to be independently associated with cardiovascular disease regardless of obesity. We have previously reported that a sodium-glucose co-transporter-2 (SGLT2) inhibitor, luseogliflozin, reduces the EF volume (EFV) in parallel with the reduction of body weight in obese patients (BMI ≥25 kg/m(2)) with type 2 diabetes. However, it is unknown whether SGLT2 inhibitors could reduce EFV in non-obese patients (BMI <25 kg/m(2)) with type 2 diabetes...
June 14, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28609470/physical-fitness-and-plasma-leptin-in-women-with-recent-gestational-diabetes
#13
C Gar, M Rottenkolber, H Grallert, F Banning, I Freibothe, V Sacco, C Wichmann, S Reif, A Potzel, V Dauber, C Schendell, N N Sommer, B Wolfarth, J Seissler, A Lechner, U Ferrari
AIMS/HYPOTHESIS: Low physical fitness (PF) is a risk factor for type 2 diabetes mellitus (T2D). Women with a history of gestational diabetes (GDM) are at risk for T2D at a young age, but the role of PF in this population is not clear. PF has also been found to correlate inversely with plasma leptin in previous studies. Here, we examine whether women who had GDM have lower PF than women after a normoglycemic pregnancy and, second, whether PF is associated with plasma leptin, independently of body fat mass...
2017: PloS One
https://www.readbyqxmd.com/read/28608728/dietary-factors-and-pediatric-multiple-sclerosis-a-case-control-study
#14
Julia Pakpoor, Brandon Seminatore, Jennifer S Graves, Teri Schreiner, Amy T Waldman, Timothy E Lotze, Anita Belman, Benjamin M Greenberg, Bianca Weinstock-Guttman, Gregory Aaen, Jan-Mendelt Tillema, Jamie C McDonald, Janace Hart, Jayne M Ness, Yolanda Harris, Jennifer Rubin, Meghan Candee, Lauren Krupp, Mark Gorman, Leslie Benson, Moses Rodriguez, Tanuja Chitnis, Soe Mar, Ilana Kahn, John Rose, Suzan L Carmichael, Shelly Roalstad, Michael Waltz, T Charles Casper, Emmanuelle Waubant
BACKGROUND: The role of diet in multiple sclerosis (MS) is largely uncharacterized, particularly as it pertains to pediatric-onset disease. OBJECTIVE: To determine the association between dietary factors and MS in children. METHODS: Pediatric MS patients and controls were recruited from 16 US centers (MS or clinically isolated syndrome onset before age 18, <4 years from symptom onset and at least 2 silent lesions on magnetic resonance imaging)...
June 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28606641/fatty-infiltration-of-stage-1-or-higher-significantly-compromises-long-term-healing-of-supraspinatus-repairs
#15
Arnaud Godenèche, Fanny Elia, Jean-François Kempf, Christophe Nich, Julien Berhouet, Mo Saffarini, Philippe Collin
BACKGROUND: Fatty infiltration (FI) compromises outcomes of rotator cuff repairs. Most clinicians consider FI of the infraspinatus, whether it is torn or intact, because it is most rapidly affected. The purpose of this study was to report long-term outcomes of isolated supraspinatus repairs and to determine their associations with FI of the infraspinatus and supraspinatus. METHODS: The records of 182 patients who underwent repair of isolated supraspinatus tears and had preoperative magnetic resonance imaging were retrieved...
June 9, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28606026/subclinical-myocardial-disease-by-cardiac-magnetic-resonance-imaging-and-spectroscopy-in-healthy-hiv-hepatitis-c-virus-coinfected-persons
#16
Kara W Chew, Chia-Ying Liu, Bharath Ambale-Venkatesh, Diana Liao, Tamara B Horwich, João A C Lima, David A Bluemke, J Paul Finn, Adeel A Butt, Judith S Currier
Objective The contribution of hepatitis C virus (HCV) infection to the risk of heart failure in human immunodeficiency virus (HIV)-coinfected persons is unknown. The objective was to characterize cardiac function and morphology in HIV-treated coinfected persons. Methods In a cross-sectional study, HIV-infected patients virologically suppressed on antiretroviral therapy without known cardiovascular disease or diabetes mellitus underwent cardiac magnetic resonance imaging and spectroscopy for measures of cardiac function, myocardial fibrosis, and steatosis...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28604567/epicardial-fat-pathophysiology-and-clinical-significance
#17
Elijah Douglass, Shana Greif, William Frishman
Over the last decade and a half there has been much interest in understanding the role of epicardial adipose tissue (EAT) in cardiac pathology. EAT is a visceral adipose deposit with putative paracrine function. In the non-diseased state, EAT releases cardioprotective cytokines and chemokines to the coronary vasculature. In pathological states, EAT releases an inflammatory cytokine profile that is believed to contribute to the development and progression of coronary artery disease (CAD). EAT imaging with echocardiography, computed tomography, and magnetic resonance imaging has demonstrated a correlation between EAT size and CAD...
May 3, 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28604251/the-effect-of-a-vegetarian-vs-conventional-hypocaloric-diabetic-diet-on-thigh-adipose-tissue-distribution-in-subjects-with-type-2-diabetes-a-randomized-study
#18
Hana Kahleova, Marta Klementova, Vit Herynek, Antonin Skoch, Stepan Herynek, Martin Hill, Andrea Mari, Terezie Pelikanova
OBJECTIVE: The aim of our study was to compare the effects of a vegetarian and a conventional diet on thigh adipose tissue distribution in subjects with type 2 diabetes (T2D). METHODS: Seventy-four subjects with T2D were randomly assigned to either follow a vegetarian diet (V, n = 37) or a control group who followed an isocaloric conventional anti-diabetic diet (C, n = 37). Both diets were calorie restricted (-500 kcal/day). To measure insulin sensitivity, the hyperinsulinemic (1 mU...
June 10, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28602782/associations-between-serum-ghrelin-and-knee-symptoms-joint-structures-and-cartilage-or-bone-biomarkers-in-patients-with-knee-osteoarthritis
#19
J Wu, K Wang, J Xu, G Ruan, Q Zhu, J Cai, J Ren, S Zheng, Z Zhu, P Otahal, C Ding
OBJECTIVE: The roles of ghrelin in knee osteoarthritis (OA) are unclear. This study aimed to examine cross-sectional associations of ghrelin with knee symptoms, joint structures and cartilage or bone biomarkers in patients with knee OA. METHODS: This study included 146 patients with symptomatic knee OA. Serum levels of ghrelin and cartilage or bone biomarkers including cartilage oligomeric matrix protein (COMP), cross linked C-telopeptide of type I collagen (CTXI), cross linked N-telopeptide of type I collagen (NTXI), N-terminal procollagen III propeptide (PIIINP), and matrix metalloproteinase (MMP)-3, 10, 13 were measured using Enzyme-linked immunosorbent assay (ELISA)...
June 15, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28601401/orbital-magnetic-resonance-imaging-is-useful-in-age-related-distance-esotropia
#20
Pilar Gómez de Liaño Sanchez, Gloria Olavarri González, Pilar Merino Sanz, Jose C Escribano Villafruela
PURPOSE: To describe findings for orbital magnetic resonance imaging (MRI) in patients with age-related distance esotropia (ARDE). METHODS: We compared 31 orbital MRI from patients with ARDE (77±7 SD years) with 2 control groups: 32 orbits from individuals aged 18-50 years (33±8 SD years) and 16 orbits from individuals aged >60 years (77±7 SD years). MRI scans were acquired using 3D fast field echo in T1 sequence without fat saturation. Exclusion criteria for all groups were neurological or thyroid disease and a relevant ophthalmological history (e...
June 7, 2017: Journal of Optometry
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