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Whole body MRI

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https://www.readbyqxmd.com/read/29675640/effects-of-combined-whole-body-electromyostimulation-and-protein-supplementation-on-local-and-overall-muscle-fat-distribution-in-older-men-with-sarcopenic-obesity-the-randomized-controlled-franconia-sarcopenic-obesity-franso-study
#1
Wolfgang Kemmler, Alexandra Grimm, Michael Bebenek, Matthias Kohl, Simon von Stengel
The primary aim of the project was to determine the combined effect of whole-body electromyostimulation (WB-EMS) and protein supplements on local and overall muscle/fat distribution in older man with sarcopenic obesity (SO). Community-dwelling (cdw) men ≥ 70 years with SO were randomly allocated to a WB-EMS and protein supplementation (n = 33) or a non-intervention control group (CG: n = 34). WB-EMS was conducted 1.5 sessions of 20 min/week for 16 weeks. Whey protein supplementation aimed to ensure a daily intake of 1...
April 19, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29674325/adenylate-cyclase-type-9-adcy9-inactivation-protects-from-atherosclerosis-only-in-the-absence-of-cholesteryl-ester-transfer-protein-cetp
#2
Yohann Rautureau, Vanessa Deschambault, Marie-Ève Higgins, Daniel Rivas, Mélanie Mecteau, Pascale Geoffroy, Géraldine Miquel, Kurunradeth Uy, Rocio Sanchez, Véronique Lavoie, Geneviève Brand, Audrey Nault, Pierre-Marc Williams, Maria Laura Suarez, Nolwenn Merlet, Line Lapointe, Natacha Duquette, Marc-Antoine Gillis, Samaneh Samami, Gaétan Mayer, Philippe Pouliot, Adeline Raignault, Foued Maafi, Mathieu R Brodeur, Sylvie Levesque, Marie-Claude Guertin, Marie-Pierre Dubé, Éric Thorin, David Rhainds, Éric Rhéaume, Jean-Claude Tardif
Background -Pharmacogenomic studies have shown that ADCY9 genotype determines the effects of the cholesteryl ester transfer protein (CETP) inhibitor dalcetrapib on cardiovascular events and atherosclerosis imaging. The underlying mechanisms responsible for the interactions between ADCY9 and CETP activity have not yet been determined. Methods - Adcy9 -inactivated ( Adcy9 Gt/Gt ) and wild-type (WT) mice, that were or not transgenic for the CETP gene (CETPtg Adcy9 Gt/Gt and CETPtg Adcy9 WT ), were submitted to an atherogenic protocol (injection of an AAV8 expressing a PCSK9 gain-of-function variant and 0...
April 19, 2018: Circulation
https://www.readbyqxmd.com/read/29671193/diagnostic-performance-of-18-f-fdg-pet-ct-and-whole-body-mri-before-and-early-after-treatment-of-multiple-myeloma-a-prospective-comparative-study
#3
Mohammad Abd Alkhalik Basha, Maged Abdel Gelil Hamed, Rania Refaat, Mohamad Zakarya AlAzzazy, Manar A Bessar, Elshaimaa Mohamed Mohamed, Ayman F Ahmed, Heba Fathy Tantawy, Khaled Mohamed Altaher, Ahmed Ali Obaya, Amira Hamed Mohamed Afifi
OBJECTIVE: To determine the diagnostic accuracy of WB-MRI and 18 F-FDG PET/CT in detecting infiltration pattern, disease activity, and response to treatment in patients with multiple myeloma (MM). MATERIALS AND METHODS: Fifty-six patients with confirmed MM were included in the present study for pre-treatment evaluation. Among these individuals, 22 patients were available for the post-treatment evaluation of response to therapy. All patients were imaged with both WB-MRI and 18 F-FDG PET/CT...
April 18, 2018: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29670784/ultrasound-presentation-of-a-disseminated-fetal-and-neonatal-rhabdoid-tumor
#4
Yolaine Joueidi, Aline Rousselin, Céline Rozel, Philippe Loget, Dominique Ranchere Vince, Sylvie Odent, Franck Bourdeaut, Vincent Lavoue, Maela Le Lous
This is a case report of a disseminated fetal rhabdoid tumor discovered at 32 weeks of gestation in a 29-year-old woman on immunosuppressive therapy. The mother consulted for a decrease in fetal movement. Fetal ultrasound showed signs of a disseminated tumor affecting the left armpit, liver, spleen, and limbs. A caesarian section was performed because of signs of fetal distress. Immunohistochemical analysis of a fetal biopsy showed deletion of the SMARCB1 gene. Pathological analysis of the placenta showed a rhabdoid tumor invading both fetal and maternal compartments...
2018: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29670259/association-between-fat-mass-adipose-tissue-fat-fraction-per-adipose-tissue-and-metabolic-risks-a-cross-sectional-study-in-normal-overweight-and-obese-adults
#5
Mark Hübers, Corinna Geisler, Anja Bosy-Westphal, Wiebke Braun, Maryam Pourhassan, Thorkild I A Sørensen, Manfred J Müller
BACKGROUND/OBJECTIVES: We investigated whether fat mass (FM) and total adipose tissue (TAT) can be used interchangeably and FM per TAT adds to metabolic risk assessment. SUBJECTS/METHODS: Cross-sectional data were assessed in 377 adults (aged 18-60 years; 51.2% women). FM was measured by either 4-compartment (4C) model or quantitative magnetic resonance (QMR); total-, subcutaneous- and visceral adipose tissue (TAT, SAT, VAT), and liver fat by whole-body MRI; leptin, insulin, homeostasis model assessment of insulin resistance (HOMA-IR), C-reactive protein (CRP), and triglycerides; resting energy expenditure and respiratory quotient by indirect calorimetry were determined...
April 18, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29668616/lung-metastases-from-intracranial-bleeding-meningioma-a-case-report
#6
Su Hu, Yaqi Zhang, Yue Sun, Yang Yu, Jia Wang, Hui Dai, Feng Sun, Chunhong Hu
RATIONALE: Meningioma is slow-growing benign neoplasm that derived from the meningothelial cells of the arachnoid mater, and it is the most common type of primary brain tumor. Although cases of extracranial metastatic meningioma have been reported previously, few cases have reported the concurrent occurrence of primary meningioma with intratumoral bleeding and lung metastases. Here we report a case of meningioma with concurrent intratumoral bleeding and lung metastases. PATIENT CONCERNS: The patient was admitted to our hospital with sudden left limb paralysis combined with complaints of headache and dizziness...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29666994/whole-body-mri-in-spondyloarthritis-spa-preliminary-results-suggest-that-dwi-outperforms-stir-for-lesion-detection
#7
Frederic E Lecouvet, Nicolas Vander Maren, Laurence Collette, Nicolas Michoux, Perrine Triqueneaux, Maria Stoenoiu, Frederic Houssiau, Jacques Malghem, Marie-Laurence Denis, Ahmed Larbi, Adrien Nzeusseu Toukap
PURPOSE: To compare the diagnostic accuracy of DWI and STIR sequences in Whole body (WB) MRI of SpA patients. MATERIALS AND METHODS: Twenty consecutive patients with confirmed active SpA and 20 controls were investigated with identical WB MRI protocols, including DWI and STIR images. Two observers recorded 'lesions' (high signal intensity foci on STIR and high b-value DWI) in 17 anatomical areas, making a 17-point 'area score' and a 40-point 'lesion score'. ROC performance, inter-observer agreement, correlation with clinical parameters and spine and sacro-iliac joints (SIJ) MRI scores were assessed...
April 17, 2018: European Radiology
https://www.readbyqxmd.com/read/29665140/review-functional-and-hybrid-imaging-of-bone-metastases
#8
Gary J R Cook, Vicky Goh
Bone metastases are common, cause significant morbidity and impact on healthcare resources. While radiographs, computed tomography (CT), magnetic resonance imaging (MRI) and bone scintigraphy have frequently been used for staging the skeleton, it is recognized that these methods are insensitive and non-specific for monitoring treatment response in a clinically relevant time frame. We summarize several recent reports on new functional and hybrid imaging methods including single photon emission CT / CT, positron emission tomography / CT and whole-body MRI with diffusion-weighted imaging...
April 17, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29659316/longitudinal-changes-in-gray-matter-regions-after-cranial-radiation-and-comparative-analysis-with-whole-body-radiation-a-dti-study
#9
Apurva Watve, Mamta Gupta, Subash Khushu, Poonam Rana
PURPOSE: Radiation induced white matter changes are well known and vastly studied. However, radiation induced gray matter alterations are still a research question. In the present study, these changes were assessed in a longitudinal manner using Diffusion Tensor Imaging (DTI) and further compared for cranial and whole body radiation exposure. MATERIALS AND METHODS: Male mice (C57BL/6) were irradiated with cranial or whole body radiation followed by DTI study at 7T animal MRI system during pre-dose, sub-acute and early delayed phases of radiation sickness...
April 16, 2018: International Journal of Radiation Biology
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
#10
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/29651606/age-related-apparent-diffusion-coefficients-of-lumbar-vertebrae-in-healthy-children-at-1-5-t
#11
Alexander Tschischka, Christoph Schleich, Johannes Boos, Markus Eichner, Jörg Schaper, Joel Aissa, Gerald Antoch, Dirk Klee
BACKGROUND: Diffusion-weighted magnetic resonance imaging with apparent diffusion coefficient (ADC) calculation is important for detecting bone marrow pathologies. OBJECTIVE: To investigate age-related differences of lumbar vertebral body ADC to establish normal values for healthy children. MATERIALS AND METHODS: Forty-nine healthy children without any history of oncological or hematological diseases (10.2±4.7 years, range: 0-20 years) were included in this retrospective study...
April 13, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29648977/severe-tbi-patients-without-focal-lesion-but-with-behavioral-disorders-shrinkage-of-gray-matter-nuclei-and-thalamus-revealed-in-a-pilot-voxel-based-mri-study
#12
Alexis Ruet, Françoise Joyeux, Shailandra Segobin, Corinne Jokic, Béatrice Desgranges, Francis Eustache, Anne-Lise Pitel
After a traumatic brain injury (TBI), behavioral disorders can occur without major focal brain lesion and in this case, their pathophysiology remains unclear. The aim of this study is to examine whether TBI patients with behavioral disorders but without any focal damage, as observed from an initial clinical CT scan, present subtle volumetric alterations that could be measured voxel-by-voxel in the whole brain with magnetic resonance imaging (MRI). Eight severe TBI male adults with behavioral sequela but without major focal cerebral lesion and 17 age-matched controls underwent a volumetric T1-weighted 1...
March 6, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29627288/multiparametric-whole-body-mri-with-diffusion-weighted-imaging-and-adc-mapping-for-the-identification-of-visceral-and-osseous-metastases-from-solid-tumors
#13
Michael A Jacobs, Katarzyna J Macura, Atif Zaheer, Emmanuel S Antonarakis, Vered Stearns, Antonio C Wolff, Thorsten Feiweier, Ihab R Kamel, Richard L Wahl, Li Pan
RATIONALE AND OBJECTIVES: The purpose of this study was to investigate the use of multiparametric, whole-body, diffusion-weighted imaging (WB-DWI) and apparent diffusion coefficient (ADC) maps with T2 -weighted magnetic resonance imaging (MRI) at 3T for the detection and monitoring of metastatic disease in patients. MATERIALS AND METHODS: Fifty-four participants (32 healthy subjects and 22 patients) were scanned with WB-DWI methods using a 3T MRI scanner. Axial, sagittal, or coronal fat-suppressed T2 -weighted (T2 WI), T1 -weighted (T1 WI), and DWI images were acquired...
April 4, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29621194/vibration-and-noise-in-magnetic-resonance-imaging-of-the-vocal-tract-differences-between-whole-body-and-open-air-devices
#14
Jiří Přibil, Anna Přibilová, Ivan Frollo
This article compares open-air and whole-body magnetic resonance imaging (MRI) equipment working with a weak magnetic field as regards the methods of its generation, spectral properties of mechanical vibration and acoustic noise produced by gradient coils during the scanning process, and the measured noise intensity. These devices are used for non-invasive MRI reconstruction of the human vocal tract during phonation with simultaneous speech recording. In this case, the vibration and noise have negative influence on quality of speech signal...
April 5, 2018: Sensors
https://www.readbyqxmd.com/read/29610677/potential-association-of-lmna-associated-generalized-lipodystrophy-with-juvenile-dermatomyositis
#15
Melis Sahinoz, Shafaq Khairi, Ashley Cuttitta, Graham F Brady, Amit Rupani, Rasimcan Meral, Marwan K Tayeh, Peedikayil Thomas, Meredith Riebschleger, Sandra Camelo-Piragua, Jeffrey W Innis, M Bishr Omary, Daniel E Michele, Elif A Oral
Background: Juvenile dermatomyositis (JDM) is an auto-immune muscle disease which presents with skin manifestations and muscle weakness. At least 10% of the patients with JDM present with acquired lipodystrophy. Laminopathies are caused by mutations in the lamin genes and cover a wide spectrum of diseases including muscular dystrophies and lipodystrophy. The p.T10I LMNA variant is associated with a phenotype of generalized lipodystrophy that has also been called atypical progeroid syndrome...
2018: Clinical Diabetes and Endocrinology
https://www.readbyqxmd.com/read/29581385/advanced-body-composition-assessment-from-body-mass-index-to-body-composition-profiling
#16
Magnus Borga, Janne West, Jimmy D Bell, Nicholas C Harvey, Thobias Romu, Steven B Heymsfield, Olof Dahlqvist Leinhard
This paper gives a brief overview of common non-invasive techniques for body composition analysis and a more in-depth review of a body composition assessment method based on fat-referenced quantitative MRI. Earlier published studies of this method are summarized, and a previously unpublished validation study, based on 4753 subjects from the UK Biobank imaging cohort, comparing the quantitative MRI method with dual-energy X-ray absorptiometry (DXA) is presented. For whole-body measurements of adipose tissue (AT) or fat and lean tissue (LT), DXA and quantitative MRIs show excellent agreement with linear correlation of 0...
March 25, 2018: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29577630/diagnostic-accuracy-of-diffusion-weighted-imaging-magnetic-resonance-imaging-compared-to-positron-emission-tomography-computed-tomography-in-evaluating-and-assessing-pathological-response-to-treatment-in-adult-patients-with-lymphoma-a-systematic-review
#17
REVIEW
John J Fitzpatrick, Miriam A Ryan, John F Bruzzi
The use of Positron emission tomography/computerised tomography (PET/CT) is well established in the staging and assessment of treatment response of lymphoma. Recent studies have suggested that whole body diffusion-weighted imaging -magnetic resonance imaging (WB-DW-MRI) may be an alternative to PET/CT in both staging and assessment of treatment response. A systematic review was performed to assess the ability of DW-MRI in the assessment of treatment response in lymphoma. Pubmed, Medline, Web of Science and Embase databases were queried for studies examining whole body DW-MRI compared to PET/CT in adult patients using a protocol of search terms...
March 25, 2018: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29569318/insulin-resistance-is-associated-with-smaller-brain-volumes-in-a-preliminary-study-of-depressed-and-obese-children
#18
Owen R Phillips, Alexander K Onopa, Yevgeniya V Zaiko, Manpreet K Singh
OBJECTIVE: During childhood, the brain can consume up to 65% of total calories and a steady supply of the brain's main fuel glucose needs to be maintained. Though the brain itself is not dependent on insulin for the uptake of glucose, insulin plays an important role in energy homeostasis. Thus, risk for insulin resistance during brain development may negatively impact whole brain volume. METHODS: We investigated the link between insulin resistance and whole brain volume as measured by structural MRI in 46 unmedicated depressed and overweight youth between the ages of 9 to 17 years...
March 22, 2018: Pediatric Diabetes
https://www.readbyqxmd.com/read/29569217/mri-evaluation-of-peripheral-vascular-anomalies-using-time-resolved-imaging-of-contrast-kinetics-tricks-sequence
#19
Nicolò Schicchi, Corrado Tagliati, Giacomo Agliata, Paolo Esposto Pirani, Raffaella Spadari, Andrea Giovagnoni
INTRODUCTION: We describe the use of time-resolved imaging of contrast kinetics (TRICKS) sequence in the diagnosis of Peripheral Vascular Anomalies. In case of suspected vascular malformations time-resolved MR angiography might add important information for therapeutic decisions and follow-up. OBJECTIVE: The objective of our study was to assess the usefulness and diagnostic performance of time-resolved imaging of contrast kinetics sequence in the evaluation of peripheral vascular anomalies...
March 22, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29565651/quantitative-mri-evaluation-of-whole-abdomen-adipose-tissue-volumes-in-healthy-volunteers-validation-of-technique-and-implications-for-clinical-studies
#20
Matthew Marzetti, Tracy Brunton, Laura McCreight, Ewan Pearson, Stephen Docherty, Stephen J Gandy
OBJECTIVE: To explore "whole abdomen" MRI methods for quantifying adipose tissue volumes and to establish associations with body mass index (BMI) and measurement reproducibility - relative to existing "partial abdomen" methods. METHODS: Fifteen healthy volunteers were scanned on a 3.0T MRI scanner using a double-echo three-point-Dixon gradient echo sequence. Whole abdomen volumes were acquired via three separate scans ("supine 1", "supine 2" and "prone")...
March 22, 2018: British Journal of Radiology
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