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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MRI technology that provides whole-body composition reports gets FDA greenlight

AMRA Medical's product assesses body composition by analyzing muscle and fat on magnetic resonance imaging scans, the company said in a statement.

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Allergic reactions to iodinated CT contrast increase likelihood of sensitivity to GBCAs

Historically, sensitivity to iodinated contrast media was not a risk factor for adverse reactions to gadolinium-based contrast agents, experts explained this week in Radiology.

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Breast MRI screening cuts cancer mortality rates in half for women with lesser-known gene mutations

Women with ATM, CHEK2 and PALB2 gene mutations would benefit from beginning MRI screenings earlier than previously recommended, experts reported in JAMA Oncology.

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MRI-guided radiotherapy for prostate cancer cuts treatment side effects in half

The team originally planned to enroll 300 men in the study, but the decisive results seen among the first 100 patients prompted them to cut enrollment in half.

coronavirus COVID-19 vaccine vaccination

Cardiac MRI scans offer new insight into COVID vaccine-related myocarditis

Vaccine-related myocarditis displayed less severe injury patterns than the heart inflammation caused by COVID infection, doctors explained in Radiology.

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These 3 MRI features can help junior radiologists identify placental attachment disorders

When using three specific MRI features to identify placental attachment abnormalities, junior radiologists' detection accuracy increased significantly, experts recently explained in EJR.

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Is PET/CT or multiparametric MRI best for detecting prostate cancer? New research offers guidance

A comparison of the detection rates for 68Ga-PSMA PET/CT and mpMRI in low, intermediate and high-risk prostate cancer was recently shared by experts in EJNMMI.

University awarded research grant to study Alzheimer's using specialized brain MRI

The $3.8 million grant spans five years and will focus on cerebrovascular abnormalities by using a specialized imaging technique, the university announced this week.

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