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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FDA approves first AI-assisted cardiac MRI scanner

Los Altos, California-based HeartVista has gained approval from the Food and Drug Administration for its one-click heart MRI examination tool. 

October 30, 2019

MRI technique may make diagnosing liver cancer easier, scientists say

Experts with Charité – Universitätsmedizin Berlin have developed a new diagnostic technique to let doctors visualize liver tumors using “tomoelastography,” which combines tomography and elasticity.

October 29, 2019

AI can predict MR sequence types, saving providers time

Researchers found that deep convolutional neural networks (CNNs) can predict sequence types for brain MR images, sharing their findings in the Journal of Digital Imaging.

October 28, 2019

Startup collaborating with Yale on new point-of-care MRI system

As part of the collaboration, Yale New Haven Hospital has been using the MRI system for a two-year study involving the American Heart Association. Results of the preliminary research will be announced early next year.

October 25, 2019
Patient

Yale School of Medicine, tech company collaborate to create portable MRI

The Ivy League institution is now trying out the transportable tool in the neuro intensive care unit of Yale New Haven Hospital.

October 14, 2019

Children’s National Hospital using sophisticated MRI to track impact of opioids on infant brains

The District of Columbia-based provider joins several other institutions as part of the NIH’s massive Helping to End Addiction Long-Term Initiative. 

October 14, 2019
Videogames

Take a break? fMRI shows videogaming fatigues brain area associated with attention span

Playing videogames during breaktimes reduces activation in the brain’s supplementary motor area, and the falloff shows up in findings on fMRI and as poorer functional performance in short-term memory tests when people get back to work.

October 14, 2019

Why women are skipping their follow-up breast cancer MRI

Women initially deemed to have a less than 2% chance of developing breast cancer often skip the recommended follow-up MRI six months later. Johns Hopkins researchers are attempting to understand why, and recently published some early insights into the issue.

October 11, 2019

Around the web

"This was an unneeded burden, which was solely adding to the administrative hassles of medicine," said American Society of Nuclear Cardiology President Larry Phillips.

SCAI and four other major healthcare organizations signed a joint letter in support of intravascular ultrasound. 

The newly approved AI models are designed to improve the detection of pulmonary embolisms and strokes in patients who undergo CT scans.

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