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Fat magnetic resonance imaging

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https://www.readbyqxmd.com/read/29777107/differentiation-of-periapical-granulomas-and-cysts-by-using-dental-mri-a-pilot-study
#1
Alexander Juerchott, Thorsten Pfefferle, Christa Flechtenmacher, Johannes Mente, Martin Bendszus, Sabine Heiland, Tim Hilgenfeld
The purpose of this pilot study was to evaluate whether periapical granulomas can be differentiated from periapical cysts in vivo by using dental magnetic resonance imaging (MRI). Prior to apicoectomy, 11 patients with radiographically confirmed periapical lesions underwent dental MRI, including fat-saturated T2-weighted (T2wFS) images, non-contrast-enhanced T1-weighted images with and without fat saturation (T1w/T1wFS), and contrast-enhanced fat-saturated T1-weighted (T1wFS+C) images. Two independent observers performed structured image analysis of MRI datasets twice...
May 17, 2018: International Journal of Oral Science
https://www.readbyqxmd.com/read/29775733/association-of-childhood-adiposity-measures-with-adulthood-knee-cartilage-defects-and-bone-marrow-lesions-a-25-year-cohort-study
#2
Tao Meng, Shaun Thayer, Alison Venn, Feitong Wu, Flavia Cicuttini, Lyn March, Terence Dwyer, Andrew Halliday, Marita Cross, Laura L Laslett, Graeme Jones, Changhai Ding, Benny Antony
OBJECTIVE: To describe the associations between childhood adiposity measures and adulthood knee cartilage defects and bone marrow lesions (BMLs) measured 25 years later. METHODS: 327 participants from the Australian Schools Health and Fitness Survey of 1985 (aged 7-15 years) were followed up 25 years later (aged 31-41 years). Childhood measures (weight, height and skinfolds) were collected in 1985. Body mass index (BMI), overweight status and fat mass were calculated...
May 15, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29774594/in-vivo-characterization-of-3d-skull-and-brain-motion-during-dynamic-head-vibration-using-magnetic-resonance-elastography
#3
Ziying Yin, Yi Sui, Joshua D Trzasko, Phillip J Rossman, Armando Manduca, Richard L Ehman, John Huston
PURPOSE: To introduce newly developed MR elastography (MRE)-based dual-saturation imaging and dual-sensitivity motion encoding schemes to directly measure in vivo skull-brain motion, and to study the skull-brain coupling in volunteers with these approaches. METHODS: Six volunteers were scanned with a high-performance compact 3T-MRI scanner. The skull-brain MRE images were obtained with a dual-saturation imaging where the skull and brain motion were acquired with fat- and water-suppression scans, respectively...
May 17, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29773823/comparison-of-conventional-sonographic-signs-and-magnetic-resonance-imaging-proton-density-fat-fraction-for-assessment-of-hepatic-steatosis
#4
Mimi Kim, Bo-Kyeong Kang, Dae Won Jun
This study correlated conventional ultrasonography (US) signs with the magnetic resonance imaging (MRI) proton density fat fraction (PDFF) to evaluate the diagnostic performance of US signs (alone or combined) to predict presence and degree of hepatic steatosis (HS). Overall, 182 subjects met the study inclusion criteria between February 2014 and October 2016. Four US signs were evaluated independently by two radiologists. MRI PDFF was defined as the average of 24 non-overlapping regions of interest (ROIs) within eight liver segments obtained by drawing three ROIs within each segment...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29772956/lumbar-muscle-structure-predicts-operational-postures-in-active-duty-marines
#5
David B Berry, Bahar Shahidi, Ana E Rodríguez-Soto, Jan M Hughes-Austin, Karen R Kelly, Samuel R Ward
Study Design Cross-sectional. Background The relationship between lumbar spine posture and muscle structure is not well understood. Objectives Investigate the predictive capacity of muscle structure on lumbar spine posture in active duty Marines. Methods Fouty-three Marines were scanned using an upright magnetic resonance imaging (MRI) scanner while standing unloaded and standing, sitting, and prone on elbows with body armor. Cobb, horizontal, and sacral angles were measured. Marines were then scanned unloaded in supine using a supine MRI scanner...
May 17, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29772342/is-local-or-central-adiposity-more-strongly-associated-with-incident-knee-osteoarthritis-than-the-body-mass-index-in-men-or-women
#6
Adam G Culvenor, David T Felson, Wolfgang Wirth, Torben Dannhauer, Felix Eckstein
OBJECTIVE: To determine whether central (abdominal) or peripheral (thigh) adiposity measures are associated with incident radiographic knee osteoarthritis (RKOA) independent of body mass index (BMI) and whether their relation to RKOA was stronger than that of BMI. DESIGN: 161 Osteoarthritis Initiative participants (62% female) with incident RKOA (Kellgren/Lawrence grade 0/1 at baseline, developing an osteophyte and joint space narrowing grade ≥1 by year-4) were matched to 186 controls (58% female) without incident RKOA...
May 14, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29770772/fse-t2-weighted-two-point-dixon-technique-for-fat-suppression-in-the-lumbar-spine-comparison-with-spair-technique
#7
Sangmin Lee, Dae Seob Choi, Hwa Seon Shin, Hye Jin Baek, Ho Cheol Choi, Sung Eun Park
PURPOSE: Fat suppression magnetic resonance imaging (MRI) technique has been used to improve the diagnostic confidence in lumbar spine diseases. We aimed to compare T2-weighted water-fat separation technique (T2 Dixon) with spectral attenuated inversion recovery (SPAIR) image for fat suppression. METHODS: Lumbar spine MRI examinations were performed in 79 patients by using a 3.0 T machine. We compared T2 Dixon water-only image and SPAIR image for the evaluation of fat suppression quality and lesion conspicuity...
May 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29768298/orbital-cellulitis-when-computed-tomography-imaging-is-falsely-reassuring
#8
Arsany Basily, Sasha Mansukhani, Andrew Anzeljc, Peter Gutierrez
An 8-year-old male presented to the pediatric emergency department with subjective fever, blurry vision, and left eye pain. On physical examination, there was mild left lower lid erythema and a subtle left eye elevation deficit. Computed tomography demonstrated preseptal soft tissue swelling without orbital involvement; however, there was varying amounts of paranasal sinus opacification. Despite the negative scan, a diagnosis of orbital cellulitis associated with sinusitis was made and treatment with intravenous antibiotics was initiated...
May 15, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29764718/metabolic-syndrome-associates-with-left-atrial-dysfunction
#9
K Nyman, M Granér, M O Pentikäinen, J Lundbom, A Hakkarainen, R Sirén, M S Nieminen, M-R Taskinen, N Lundbom, K Lauerma
BACKGROUND AND AIMS: Obesity and metabolic syndrome (MetS) are risk factors of atrial fibrillation (AF), but limited data exist on their effect on left atrial (LA) function. The aim of the study was to evaluate the effects of cardiac, hepatic and intra-abdominal ectopic fat depots and cardiometabolic risk factors on LA function in non-diabetic male subjects. METHODS AND RESULTS: Myocardial and hepatic triglyceride contents were measured with 1.5T 1 H-magnetic resonance spectroscopy and LA and left ventricular function, visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), epicardial and pericardial fat by magnetic resonance imaging (MRI) in 33 men with MetS and 40 men without MetS...
February 21, 2018: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29762121/friction-syndromes-of-the-knee-the-iliotibial-band-and-anterior-fat-pads
#10
Robert D Wissman, Stephen J Pomeranz
As participation in sporting activities increases among the general population, the incidence of overuse injuries continues to rise. Friction syndromes of the knee are common and are often clinically diagnosed without the need for imaging. However, clinical symptoms may overlap with other joint abnormalities, and physical examination may be limited in individuals with excessive pain. Magnetic resonance imaging has remained the modality of choice for the evaluation of internal derangements of the joints and is a useful aid in the diagnosis of friction syndrome of the knee...
2018: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/29762056/fracture-of-ankle-mri-using-opposed-phase-imaging-obtained-from-turbo-spin-echo-modified-dixon-image-shows-improved-sensitivity
#11
Jin Hee You, In Hwan Kim, Jinwoo Hwang, Hye Sun Lee, Eun Hae Park
OBJECTIVE: To evaluate if opposed-phase (OP) imaging obtained from the turbo spin echo (TSE) modified Dixon (mDixon) technique can increase the sensitivity of magnetic resonance imaging (MRI) for diagnosing ankle fractures. METHODS: This study included 95 CT-confirmed ankle fractures with additional MRI of the ankle using a TSE modified Dixon technique. Two groups of images were analyzed independently: Group 1 - imaging group without OP imaging; Group 2 - imaging group with OP imaging...
May 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29761171/coding-variants-in-pnpla3-and-tm6sf2-are-risk-factors-for-hepatic-steatosis-and-elevated-serum-alanine-aminotransferases-caused-by-a-glucagon-receptor-antagonist
#12
Cristina B Guzman, Suman Duvvuru, Anthony Akkari, Pallav Bhatnagar, Chakib Battioui, Wendra Foster, Xiaotian Michelle Zhang, Sudha S Shankar, Mark A Deeg, Naga Chalasani, Thomas A Hardy, Christof M Kazda, Sreekumar G Pillai
LY2409021 is a glucagon receptor antagonist that was associated with hepatic steatosis and elevated aminotransferases in phase 2 diabetes studies. We investigated the relationship between selected genetic variants and hepatic steatosis and elevated alanine aminotransferases (ALTs) associated with LY2409021. Patients participated in a 6-week placebo-controlled trial (I1R-MC-GLDI [GLDI], n = 246) and a 52-week placebo- and active comparator-controlled trial (I1R-MC-GLDJ [GLDJ], n = 158). GLDJ had endpoints at 6 months, including measures of hepatic fat fraction (HFF) by magnetic resonance imaging...
May 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29760871/presacral-myelolipoma-as-a-possible-parasymptom-of-cancer-a-case-report
#13
Akio Sakamoto, Iori Nagamatsu, Eisuke Shiba, Takeshi Okamoto, Masanori Hisaoka, Shuichi Matsuda
Presacral myelolipomas are rare, benign, asymptomatic tumors composed of mature adipose tissue and hematopoietic elements. Presacral myelolipomas can occur in patients with a medical history of malignancy, steroid use, and/or endocrine disorders including diabetes mellitus. A 65-year-old man with no specific medical history experienced temporal abdominal pain without bowel symptoms that lasted a few hours. By the time he visited a hospital, the pain had diminished. Computed tomography failed to detect any abnormality in the abdominal or pelvic organs that would have caused the abdominal pain but revealed a lesion 4 cm in diameter in the frontal sacrum...
2018: Rare Tumors
https://www.readbyqxmd.com/read/29757721/spectrum-of-extratesticular-and-testicular-pathologic-conditions-at-scrotal-mr-imaging
#14
Pardeep K Mittal, Ahmed S Abdalla, Argha Chatterjee, Deborah A Baumgarten, Peter A Harri, Jay Patel, Courtney C Moreno, Helena Gabriel, Frank H Miller
Diagnostic workup of scrotal lesions should begin with a complete clinical history and physical examination, including analysis of risk factors such as family history of testicular cancer, personal history of tumor in the contralateral testis, and cryptorchidism, followed by imaging. Scrotal ultrasonography (US) with a combination of gray-scale and color Doppler techniques has been the first-line imaging modality for evaluation of testicular and extratesticular lesions because of its low cost, wide availability, and high diagnostic accuracy...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29753949/associations-between-knee-structural-measures-circulating-inflammatory-factors-and-mmp13-in-patients-with-knee-osteoarthritis
#15
Guangfeng Ruan, Jianhua Xu, Kang Wang, Juan Wu, Qicui Zhu, Jiale Ren, Fuqin Bian, Bingru Chang, Xiaochun Bai, Weiyu Han, Changhai Ding
OBJECTIVE: To investigate cross-sectional associations between serum level of MMP13 and knee structural measures and circulating inflammatory factors in patients with symptomatic knee osteoarthritis (OA). DESIGN: A total of 149 subjects with symptomatic knee OA were included. Magnetic resonance imaging was used to measure infrapatellar fat pad (IPFP) volume, IPFP signal intensity alternation, cartilage volume and cartilage defects. Knee radiography was used to assess radiographic OA using the Kellgren-Lawrence (K-L) grading system...
May 10, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29750890/impact-of-age-on-disease-progression-and-microenvironment-in-oral-cancer
#16
V K Vincent-Chong, H DeJong, L J Rich, A Patti, M Merzianu, P A Hershberger, M Seshadri
Despite the recognized link between aging and cancer, most preclinical studies in experimental tumor models are conducted with 6- to 8-wk-old rodents. The goal of the present study was to examine the impact of age on tumor incidence, growth, and microenvironmental characteristics in mouse models of head and neck squamous cell carcinoma (HNSCC). Experimental studies were conducted with the 4-nitroquinoline-oxide (4NQO) oral carcinogenesis model and orthotopic FaDu HNSCC xenografts, established in young (7 to 12 wk of age) and old (65 to 70 wk of age) female C57BL/6 mice ( n = 44; 4NQO model) and severe combined immunodeficient mice ( n = 13; HNSCC xenografts)...
May 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29748692/clinics-in-diagnostic-imaging-185
#17
Ying Xin Candice Leong, Poh Lye Paul See
A 20-year-old National Serviceman presented with left knee pain and swelling after training for his physical fitness test. Lateral knee radiography and magnetic resonance (MR) imaging showed patellar tendon-lateral femoral condyle friction syndrome (PT-LFCFS), on a background of patella alta and patellar malalignment. The patient was treated non-operatively with a course of physiotherapy and given advice on rest and activity modification. PT-LFCFS is a less well-recognised but important cause of anterior knee pain and represents an entity in a spectrum of disorders related to patellofemoral instability...
April 2018: Singapore Medical Journal
https://www.readbyqxmd.com/read/29748651/advances-in-assessing-body-composition-during-pregnancy
#18
REVIEW
Jasper Most, Kara Lynn Marlatt, Abby Duhé Altazan, Leanne Maree Redman
The prevalence of excess gestational weight gain is increasing worldwide and is associated with pregnancy complications, including gestational diabetes mellitus, pre-eclampsia, preterm birth, macrosomia, and development of obesity in offspring. Whereas gestational weight gain positively correlates with the gain in fat mass (FM), fat-free mass (FFM) gain is relatively consistent across pregnancies. Commonly used methods to assess body composition include anthropometry, densitometry (air displacement plethysmography, underwater weighing), and hydrometry (isotope dilution, bioimpedance analysis)...
May 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29742918/can-unenhanced-mri-of-the-breast-replace-contrast-enhanced-mri-in-assessing-response-to-neoadjuvant-chemotherapy
#19
Beatrice Cavallo Marincola, Marianna Telesca, Fulvio Zaccagna, Frank Riemer, Michele Anzidei, Carlo Catalano, Federica Pediconi
Background The goals of neoadjuvant chemotherapy (NAC) are to reduce tumor volume and to offer a prognostic indicator in assessing treatment response. Contrast-enhanced magnetic resonance imaging (CE-MRI) is an established method for evaluating response to NAC in patients with breast cancer. Purpose To validate the role of unenhanced MRI (ue-MRI) compared to CE-MRI for assessing response to NAC in women with breast cancer. Material and Methods Seventy-one patients with ongoing NAC for breast cancer underwent MRI before, during, and at the end of NAC...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29742917/diagnostic-value-of-mri-signs-in-differentiating-ewing-sarcoma-from-osteomyelitis
#20
Ömer Kasalak, Jelle Overbosch, Hugo Ja Adams, Amelie Dammann, Rudi Ajo Dierckx, Paul C Jutte, Thomas C Kwee
Background The value of magnetic resonance imaging (MRI) signs in differentiating Ewing sarcoma from osteomyelitis has not be thoroughly investigated. Purpose To investigate the value of various MRI signs in differentiating Ewing sarcoma from osteomyelitis. Material and Methods Forty-one patients who underwent MRI because of a bone lesion of unknown nature with a differential diagnosis that included both Ewing sarcoma and osteomyelitis were included. Two observers assessed several MRI signs, including the transition zone of the bone lesion, the presence of a soft-tissue mass, intramedullary and extramedullary fat globules, and the penumbra sign...
January 1, 2018: Acta Radiologica
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