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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Placental MRI can predict adverse pregnancy outcomes early on in gestation

A new study highlights the benefits of MRI for determining pregnancy risks related to placental dysfunction, opening doors for earlier care management. 

Emergency overreads change care for 92% of patients with discrepant outside reports

When emergency radiologists overread interpretations of critically ill transfer patients, they discover discrepancies in fewer than 15% of cases. However, more than 90% of these second opinions produce a change in patient care or follow-up.

New MRI algorithm could qualify more epilepsy patients for surgery

When applied to brain imaging, the algorithm assists in the detection of subtle abnormalities in instances of drug-resistant focal cortical dysplasia (FCD), which is known to cause epilepsy and is historically difficult to detect. 

FDA greenlights ortho robot, automated MRI brain modeling

FDA approvals arrive for ClearPoint Neuro and MicroPort Navibot. 

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Prostate AI cleared for U.S. sales

A medical AI startup in Omaha, Neb., has received the FDA’s blessing to market software for diagnosing prostate cancer on MRI scans.

Breathing issues, language barriers swell MRI scan times

MRI technologists serving patients who have difficulty understanding English may need to budget additional scanner time—especially when image quality largely depends on patients’ compliance with breathing instructions.

COVID-19 medical imaging examples of various clinical presentations. SARS-CoV-2 clinical imaging presentations.

PHOTO GALLERY: What does COVID-19 look like on medical imaging?

This image gallery shows what the various clinical presentations associated with the COVID-19 virus that have been documented during the coronavirus pandemic.

father of #MRI, Raymond Damadian

'Father of MRI' dies at 86

The science community lost a man who pioneered one of medical imaging’s most important developments when Raymond Vahan Damadian passed away August 3. 

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