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.

Brain MRI could ID metastases in breast cancer patients, but guidelines don’t recommend it

Though not the guideline-recommended route for treatment, select breast cancer patients could benefit greatly from MRI screenings designed to identify brain metastases, according to a research letter penned this month by Dana-Farber/Brigham and Women’s Cancer Center experts and published in JAMA Oncology.

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Conventional MRI shows promise for measuring lung function in asthmatics

Conventional MRI has a new use in the clinical setting, Canadian researchers wrote in Radiology this month: measuring lung ventilation abnormalities in free-breathing patients.

Texas man faces up to 20 years for selling $1M of false MRI equipment

A Richardson, Texas, man was convicted by a federal jury Tuesday for his involvement in a scheme to impersonate multi-billion-dollar health tech company Cerner Corporation in a series of business deals that included a ploy to sell fraudulent MRI equipment.

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Integrated PET/MR shows promise in diagnosing Alzheimer's

Integrated PET/MR systems are showing promise when it comes to analyzing spatially and temporally co-registered multimodal and multiparametric 3D images, one physician wrote in Radiology this month—but the technique is nowhere near ready for prime time.

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Why do some women with dense breasts skip supplemental MRI after a negative mammogram?

Most women with extremely dense breasts who decline the invitation to receive supplemental MRI after a negative mammogram do so because of “MRI-related inconveniences” or anxiety, according to a new study published by Clinical Radiology.

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Research finds talking with radiographer calms patients before MRI

Nerves before an MRI are normal—up to 37 percent of patients report either moderate or high levels of anxiety leading up to an exam—and this apprehension can have physical consequences that render an entire scanning experience useless, first author J.R. Tugwell and colleagues wrote in Radiography this month.

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Extracting radiomic features from MR images helps with breast lesion classification

Extracting radiomic features from MR images can help radiologists distinguish between benign breast lesions and luminal A breast cancers, according to a new study published by Academic Radiology.

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Expensive imaging: New data reveal MRI prices highest in the US

The average price of an MRI in the United States is $1,119, higher than in any comparable countries, according to a new report from the Kaiser Family Foundation. The report examined the availability, utilization and prices of a variety of health services in countries all over the world.