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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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.

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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.

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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.

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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. 

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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.

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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.

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New MRI technique uses lower magnetic field

National Institutes of Health experts have developed a new high-performing MRI method that uses a low magnetic field and could open a whole new wealth of possibilities for the technology.

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How superheroes are helping one imaging center drop its sedation rates

It can be difficult to convince a child to sit still through an MRI scan, especially without an assist from anesthesiology. One academic medical center is changing that norm with the help of Captain America and Iron Man.