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Whole body MRI

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https://www.readbyqxmd.com/read/29029532/11c-choline-pet-ct-and-whole-body-mri-including-diffusion-weighted-imaging-for-patients-with-recurrent-prostate-cancer
#1
Hinrich Wieder, Ambros J Beer, Konstantin Holzapfel, Martin Henninger, Tobias Maurer, Sarah Schwarzenboeck, Ernst J Rummeny, Matthias Eiber, Jens Stollfuss
PURPOSE: To compare the detection efficacy of 11C-choline positron emission tomography and computed tomography (PET/CT) with whole-body magnetic resonance imaging (MRI) including diffusion-weighted imaging (DWI) in patients with suspected recurrent prostate cancer. MATERIALS AND METHODS: Fifty-seven patients (mean age 68, range 54-80 years) underwent 11C-choline PET/CT and MRI using T1-weighted (T1w), short-tau inversion recovery (STIR), and DWI. Two readers visually rated suspicious lesions on a 5-point scale in 20 different regions...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29018927/whole-body-magnetic-resonance-in-indolent-lymphomas-under-watchful-waiting-the-time-is-now
#2
EDITORIAL
Massimo Galia, Domenico Albano, Corrado Tarella, Caterina Patti, Luca Maria Sconfienza, Antonino Mulè, Pierpaolo Alongi, Massimo Midiri, Roberto Lagalla
ᅟ: The indolent non-Hodgkin lymphomas (i-NHLs) are characterised by 'indolent' clinical behaviour with slow growth and prolonged natural history. The watchful waiting (WW) strategy is a frequently employed treatment option in these patients. This implies a strict monitoring by imaging examinations, including 18F-fluorodeoxyglucose-positron emission tomography/computed tomography (18F-FDG-PET/CT) and CT. A major concern is radiation exposure due to regularly monitoring by conventional imaging procedures. Several studies have demonstrated the reliability of whole-body magnetic resonance imaging (WB-MRI) for lymphoma staging...
October 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28994004/advantages-of-18-f-fdg-pet-ct-over-conventional-staging-for-sarcoma-patients
#3
Zsuzsanna Németh, Katalin Boér, Katalin Borbély
The effective management of patients with sarcomas requires accurate diagnosis and staging. Imaging, such as ultrasonography (US), computed tomography (CT), magnetic resonance imaging (MRI) are the most freqently used methods for the detection of the lesion location, size, morphology and structural changes to adjacent tissues; however, these modalities provide little information about tumour biology. MRI is a robust and useful modality in tumour staging of sarcomas, however metabolic-fluorodeoxyglucose positron emission tomography/ computer tomography ((18)F-FDG PET/CT) provides greater accuracy to overall staging in combination with MRI [1]...
October 9, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28993708/body-mass-index-is-associated-with-cortical-thinning-with-different-patterns-in-mid-and-late-life
#4
M E Shaw, P S Sachdev, W Abhayaratna, K J Anstey, N Cherbuin
OBJECTIVE: High BMI at midlife is associated with increased risk of dementia as well as faster decline in cognitive function. In late-life, however, high BMI has been found to be associated with both increased and decreased dementia risk. The objective of this study was to investigate the neural substrates of this age-related change in BMI risk. METHODS: We measured longitudinal cortical thinning over the whole brain, based on MRI scans for 910 individuals aged 44 to 66 years at baseline...
October 10, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28988289/whole-body-magnetic-resonance-imaging-wb-mri-and-brain-mri-baseline-surveillance-in-tp53-germline-mutation-carriers-experience-from-the-li-fraumeni-syndrome-education-and-early-detection-lead-clinic
#5
Jasmina Bojadzieva, Behrang Amini, Suzanne F Day, Tiffiny L Jackson, Parijatham S Thomas, Brandy J Willis, Whitney R Throckmorton, Najat C Daw, Therese B Bevers, Louise C Strong
Individuals with Li-Fraumeni syndrome (LFS) have a significantly increased lifetime cancer risk affecting multiple organ sites. Therefore, novel comprehensive screening approaches are necessary to improve cancer detection and survival in this population. The objective of this study was to determine the diagnostic performance of whole body MRI (WB-MRI) and dedicated brain MRI screening as part of a comprehensive screening clinic called Li-Fraumeni Education and Early Detection (LEAD) at MD Anderson Cancer Center...
October 7, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28986620/-imaging-of-primary-muscular-diseases-what-do-neurologists-expect-from-radiologists
#6
REVIEW
M P Wattjes, A Fischmann, D Fischer
Imaging, in particular magnetic resonance imaging (MRI), has in recent years increasingly become a crucial tool for the diagnostics of inherited and acquired muscular diseases. The aim of imaging in neuromuscular disorders goes beyond the detection and quantification of degenerative muscular changes, such as fatty degeneration and includes recognition of very early signs of muscular pathologies presenting as muscular edema. Therefore, imaging is a valuable diagnostic method to support the clinical diagnosis and to narrow down the differential diagnoses, leading to specific additional diagnostic tests in order to establish the correct diagnosis...
October 6, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28984777/anti-ma2-associated-limbic-encephalitis-with-coexisting-chronic-inflammatory-demyelinating-polyneuropathy-in-a-patient-with-non-hodgkin-lymphoma-a-case-report
#7
Weina Ju, Baochang Qi, Xu Wang, Yu Yang
RATIONALE: We report the rare case of a 74-year-old man with anti-Ma2-associated paraneoplastic neurologic syndrome (PNS), and review and analyze the clinical manifestations, diagnosis, and treatment of the disease. PATIENT CONCERNS: The patient presented with a 5-month history of muscle weakness, progressive body aches, and weakness and numbness in both lower extremities. Before his hospitalization, he had experienced cognitive function decline; ptosis, inward gaze, and vertical gaze palsy in the right eye; and occasional visual hallucinations...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28981613/-wrong-way-up-temporal-and-spatial-dynamics-of-the-networks-for-body-motion-processing-at-9-4-t
#8
Marina A Pavlova, Michael Erb, Gisela E Hagberg, Joana Loureiro, Alexander N Sokolov, Klaus Scheffler
Body motion delivers a wealth of socially relevant information. Yet display inversion severely impedes biological motion (BM) processing. It is largely unknown how the brain circuits for BM are affected by display inversion. As upright and upside-down point-light BM displays are similar, we addressed this issue by using ultrahigh field functional MRI at 9.4 T providing for high sensitivity and spatial resolution. Whole-brain analysis along with exploration of the temporal dynamics of the blood-oxygen-level-dependent response reveals that in the left hemisphere, inverted BM activates anterior networks likely engaged in decision making and cognitive control, whereas readily recognizable upright BM activates posterior areas solely...
July 10, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28981354/whole-body-mri-current-applications-in-oncology
#9
Mario Morone, Maria Antonietta Bali, Nina Tunariu, Christina Messiou, Matthew Blackledge, Luigi Grazioli, Dow-Mu Koh
OBJECTIVE: The purpose of this article is to review current image acquisition and interpretation for whole-body MRI, clinical applications, and the emerging roles in oncologic imaging, especially in the assessment of bone marrow diseases. CONCLUSION: Whole-body MRI is an emerging technique used for early diagnosis, staging, and assessment of therapeutic response in oncology. The improved accessibility and advances in technology, including widely available sequences (Dixon and DWI), have accelerated its deployment and acceptance in clinical practice...
October 5, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28978865/economic-benefits-and-diagnostic-quality-of-diffusion-weighted-magnetic-resonance-imaging-for-primary-lung-cancer
#10
Katsuo Usuda, Aika Funazaki, Ryo Maeda, Atsushi Sekimura, Nozomu Motono, Munetaka Matoba, Hidetaka Uramoto
This paper focuses on the latest research of diffusion-weighted magnetic resonance imaging (DWI), and deals with economic benefits, diagnostic benefits, and prospects of DWI for lung cancer. The medical cost of a magnetic resonance imaging (MRI) is 81%-84% cheaper than that of 18-fluoro-2-deoxy-glucose positron emission tomography/computed tomography (FDG-PET/CT). DWI is reported to be useful for differential diagnosis of malignancy or benignity for neoplasm in various organs. Diagnostic efficacy by DWI for pulmonary nodules and masses and the evaluation of N factor and M factor in lung cancer are equivalent to or more than that of FDG-PET/CT...
October 4, 2017: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28977797/evaluation-of-magnetic-resonance-imaging-safety-and-imaging-issues-associated-with-the-occlusion-balloon-used-during-fetoscopic-endoluminal-tracheal-occlusion
#11
Teresa Victoria, Ann M Johnson, N Scott Adzick, Holly L Hedrick, Frank G Shellock
INTRODUCTION: Congenital diaphragmatic hernias can be successfully treated by fetoscopic tracheal occlusion (FETO), a minimally invasive procedure that may improve postnatal survival. The endoluminal balloon utilized for FETO contains a metallic component that may pose possible risks for the fetus and mother related to the use of magnetic resonance imaging (MRI). The objective of this study is to evaluate MRI-related imaging and safety issues (magnetic field interactions, heating, and artifacts) for the occlusion balloon used in FETO...
October 5, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28971512/reduced-acoustic-noise-in-diffusion-tensor-imaging-on-a-compact-mri-system
#12
Ek T Tan, Christopher J Hardy, Yunhong Shu, Myung-Ho In, Arnaud Guidon, John Huston, Matt A Bernstein, Thomas K F Foo
PURPOSE: To investigate the feasibility of substantially reducing acoustic noise while performing diffusion tensor imaging (DTI) on a compact 3T (C3T) MRI scanner equipped with a 42-cm inner-diameter asymmetric gradient. METHODS: A-weighted acoustic measurements were made using 10 mT/m-amplitude sinusoidal waveforms, corresponding to echo-planar imaging (EPI) echo spacing of 0.25 to 5.0 ms, on a conventional, whole-body 3T MRI and on the C3T. Acoustic measurements of DTI with trapezoidal EPI waveforms were then made at peak gradient performance on the C3T (80 mT/m amplitude, 700 T/m/s slew rate) and at derated performance (33 mT/m, 10 to 50 T/m/s) for acoustic noise reduction...
October 2, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28971346/combined-pet-mri-global-warming-summary-report-of-the-6th-international-workshop-on-pet-mri-march-27-29-2017-t%C3%A3-bingen-germany
#13
REVIEW
D L Bailey, B J Pichler, B Gückel, G Antoch, H Barthel, Z M Bhujwalla, S Biskup, S Biswal, M Bitzer, R Boellaard, R F Braren, C Brendle, K Brindle, A Chiti, C la Fougère, R Gillies, V Goh, M Goyen, M Hacker, L Heukamp, G M Knudsen, A M Krackhardt, I Law, J C Morris, K Nikolaou, J Nuyts, A A Ordonez, K Pantel, H H Quick, K Riklund, O Sabri, B Sattler, E G C Troost, M Zaiss, L Zender, Thomas Beyer
The 6th annual meeting to address key issues in positron emission tomography (PET)/magnetic resonance imaging (MRI) was held again in Tübingen, Germany, from March 27 to 29, 2017. Over three days of invited plenary lectures, round table discussions and dialogue board deliberations, participants critically assessed the current state of PET/MRI, both clinically and as a research tool, and attempted to chart future directions. The meeting addressed the use of PET/MRI and workflows in oncology, neurosciences, infection, inflammation and chronic pain syndromes, as well as deeper discussions about how best to characterise the tumour microenvironment, optimise the complementary information available from PET and MRI, and how advanced data mining and bioinformatics, as well as information from liquid biomarkers (circulating tumour cells and nucleic acids) and pathology, can be integrated to give a more complete characterisation of disease phenotype...
October 2, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28964929/towards-quantification-of-myelin-by-solid-state-mri-of-the-lipid-matrix-protons
#14
Alan C Seifert, Cheng Li, Michael J Wilhelm, Suzanne L Wehrli, Felix W Wehrli
PURPOSE: Direct assessment of myelin has the potential to reveal central nervous system abnormalities and serve as a means to follow patients with demyelinating disorders during treatment. Here, we investigated the feasibility of direct imaging and quantification of the myelin proton pool, without the many possible confounds inherent to indirect methods, via long-T2 suppressed 3D ultra-short echo-time (UTE) and zero echo-time (ZTE) MRI in ovine spinal cord. METHODS: ZTE and UTE experiments, with and without inversion-recovery (IR) preparation, were conducted in ovine spinal cords before and after D2O exchange of tissue water, on a 9...
September 28, 2017: NeuroImage
https://www.readbyqxmd.com/read/28957842/comparison-of-68ga-psma-pet-ct-and-multiparametric-mri-for-staging-of-high-risk-prostate-cancer68ga-psma-pet-and-mri-in-prostate-cancer
#15
Shruti Tulsyan, Chandan J Das, Madhavi Tripathi, Amlesh Seth, Rajeev Kumar, Chandrasekhar Bal
INTRODUCTION: We carried out this study to compare Glu-NH-CO-NH-Lys-(Ahx) [Ga(HBED-CC)] [Ga prostate-specific membrane antigen-11 (PSMA-11)] PET with multiparametric MRI (mpMRI) for the staging of high-risk prostate cancer. PATIENTS AND METHODS: This was a prospective study in which 36 patients with high-risk prostate cancer were included. The criteria for inclusion were biopsy-proven prostate cancer with a serum prostate specific antigen of at least 20 and/or Gleason's score of at least 8...
September 27, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28949286/altered-intrinsic-functional-brain-architecture-in-female-patients-with-bulimia-nervosa
#16
Li Wang, Qing-Mei Kong, Ke Li, Xue-Ni Li, Ya-Wei Zeng, Chao Chen, Ying Qian, Shi-Jie Feng, Ji-Tao Li, Yun'Ai Su, Christoph U Correll, Philip B Mitchell, Chao-Gan Yan, Da-Rong Zhang, Tian-Mei Si
BACKGROUND: Bulimia nervosa is a severe psychiatric syndrome with uncertain pathogenesis. Neural systems involved in sensorimotor and visual processing, reward and impulsive control may contribute to the binge eating and purging behaviours characterizing bulimia nervosa. However, little is known about the alterations of functional organization of whole brain networks in individuals with this disorder. METHODS: We used resting-state functional MRI and graph theory to characterize functional brain networks of unmedicated women with bulimia nervosa and healthy women...
September 26, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28947878/diagnostic-methods-for-detection-of-bone-metastases
#17
REVIEW
Bartosz Łukaszewski, Jerzy Nazar, Maciej Goch, Marta Łukaszewska, Adrian Stępiński, Mieczysława U Jurczyk
Skeletal metastases are severe complications in the course of cancer, and they indicate a worse prognosis. The use of modern imaging techniques allows rapid diagnosis of bone metastases. Properly selected diagnostic imaging (scintigraphy, positron emission tomography, whole body MRI) allows us to evaluate the number of metastatic foci in the skeletal system. Complementary imaging examinations (X-ray, computed tomography, magnetic resonance imaging) determine the extent of metastasis and its character: osteolytic, osteoblast, mixed)...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/28935829/contribution-of-structural-brain-phenotypes-to-the-variance-in-resting-energy-expenditure-in-healthy-caucasian-subjects
#18
Corinna Geisler, Mark Hübers, Oliver Granert, Manfred James Muller
BACKGROUND: Brain gray (GM) and white matter (WM) volumes are related to weight changes. The impact of structural variations in GM and WM on the variance in resting energy expenditure (REE) and the REE on fat free mass (FFM) association is unknown. The aim of this study was to address this in healthy Caucasian subjects. METHODS: Cross-sectional data analysis of 493 healthy Caucasian subjects (age range 6 to 80 years; three age groups) with comprehensive information on FFM, organ and tissue masses and detailed brain composition as assessed by whole body magnetic resonance imaging (MRI) and REE (assessed by indirect calorimetry)...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28929419/high-resolution-mr-imaging-for-dental-impressions-a-feasibility-study
#19
Julian Boldt, Kurt Rottner, Marc Schmitter, Andreas Hopfgartner, Peter Jakob, Ernst-Jürgen Richter, Olga Tymofiyeva
OBJECTIVES: Magnetic resonance imaging is an emerging technology in dental medicine. While low-resolution MRI has especially provided means to examine the temporomandibular joint due to its anatomic inaccessibility, it was the goal of this study to assess whether high-resolution MRI is capable of delivering a dataset sufficiently precise enough to serve as digital impression of human teeth. MATERIALS AND METHODS: An informed and consenting patient in need of dental restoration with fixed partial dentures was chosen as subject...
September 19, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28927330/thalamocortical-neural-responses-during-hyperthermia-a-resting-state-functional-mri-study
#20
Jing Zhang, Shaowen Qian, Qingjun Jiang, Guanzhong Gong, Kai Liu, Bo Li, Yong Yin, Gang Sun
The neural responses during hyperthermia, once thought of as simple physiological processes (e.g. thermal sensation and regulation), have now been recognized involving more cognitive processes, which would be highly of importance to the management of those occupations during heavy heat exposure. Previous studies have demonstrated altered activity in localized subcortical clusters for thermal sensation and regulation, as well as cortical-cortical activity for behavioral tasks during hyperthermia. However, the involvement of cortical-subcortical activity during hyperthermia has not been investigated...
September 19, 2017: International Journal of Hyperthermia
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