Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is the gold standard imaging modality for soft tissues. It produces detail cross-sectional images of soft tissue and bone anatomy, including muscles, tendons, ligaments, brain and organs, without the use of ionizing radiation. In addition to orthopedic imaging, MRI is also used for heart, brain and breast. MRI uses gadolinium contrast in many exams to highlight tissues and blood vessels, which enhances images and offers better diagnostic quality. It can also be used in conjunction with PET scans. How does MRI work? MR creates images by using powerful magnets to polarize hydrogen atoms in water (the body is made of of more than 80% water) so they face in one direction. A radiofrequency pulse is then used to ping these atoms, causing them to wobble, or resonate. The MRI coils detect this and computers can assemble images from the signals. Basic MRI scans will focus on the resonance of fat and water in two different sequences, which highlight and contrast different features in the anatomy.

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Researchers working to make 15-minute MRI scans a reality

Researchers from the University of Arizona (UA) are working to develop a 15-minute MRI scan for patients with Parkinson’s disease, children and other patient populations who may have issues remaining still for the normal 40-60 minutes.

What brain MRI scans tell us about gadolinium-based contrast agents

When researchers compared brain MRI scans of patients who had previously received gadobutrol, a common gadolinium-based contrast agent (GBCA), with patients not exposed to gadobutrol, they did not observe any visual signal intensity changes. The team noted, however, that patients who received gadobutrol had shorter T1 relaxation times of the globus pallidus.

FDA approves MRI-compatible blood pressure module

IRadimed announced Wednesday, Dec. 19, that the company has gained FDA clearance for its 3883 MRI-compatible blood pressure module.

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Gadolinium not needed for monitoring pediatric thoracic lymphoma with MRI

Teenagers hit by thoracic lymphoma can be safely and effectively imaged for primary staging and follow-up care with MRI unenhanced by gadolinium-based contrast agents—or by any contrast at all.

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How chemical shift-encoded MRI can help obese patients after weight loss treatments

MRI scans can be used to monitor liver fat levels in obese patients who undergo bariatric surgery, according to new findings published in Radiology.

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MRI scan using diffusion tensor imaging wins photo competition

An MRI scan using diffusion tensor imaging of a mouse kidney has won publisher BMC’s "Research in progress" photo competition, which included more than 370 entrants.

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Kamil Ugurbil to receive IEEE award for MRI research

Kamil Ugurbil, PhD, director of the Center for Magnetic Resonance Research (CMRR) at the University of Minnesota, will receive the 2019 Institute of Electrical and Electronics Engineers (IEEE) Medal for Innovations in Healthcare Technology “for pioneering the development and leading the advancement of ultra-high-field MRI technology for biomedical and brain research.”

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fMRI with flower-sniff test can help monitor children’s neurodevelopment

Normal children can be assessed for various neuropsychological risk factors when given a simple test of their ability to identify aromas and simultaneously imaged with functional brain MRI.

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