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.

Implementation of AI-based detection aid has no impact on radiologists’ workload, stress

UPDATED: Numerous studies have explored artificial intelligence's use in imaging, but researchers rarely take radiology’s complex work environment into account, experts noted.

December 11, 2023
jury court verdict juror lawsuit trial

Jury convicts radiology business owner in imaging-contrast kickback scheme

Neurosurgeon Payam Toobian, MD, oversaw a scam in which two physicians would receive gift cards and cash in exchange for referrals to his imaging center.

December 1, 2023
Coronavirus

Long COVID tied to microstructural changes in the brain, new MRI technique reveals

The study also unearthed a correlation between such changes and symptom-specific brain networks related to impaired cognition, sense of smell and fatigue. 

November 29, 2023
Philips BlueSeal Mobile MRI

Philips debuts first helium-conserving mobile MRI system of its kind at RSNA 2023

The imaging industry giant developed the mobile unit for outpatient radiology and oncology services provider Akumin Inc. 

November 29, 2023
brain stethoscope

FDA clears AI-powered brain MRI software from French firm Pixyl

The product aims to reduce radiologists’ read times while bolstering the detection of certain neurological disorders. 

November 21, 2023
stroke brain dementia alzheimer's puzzle mental health

MRI the most cost-effective tool for evaluating patients presenting with dizziness in the ED

When imaging is used to exclude stroke or clarify a diagnosis for secondary prevention, MRI leads to better long-term outcomes and more cost-effective management, experts advised. 

November 9, 2023

Hospital faulted after 20-week MRI delay, missing opportunity for earlier diagnosis of terminal cancer

Dunedin Hospital has since ordered an additional MRI scanner to address lagging wait times and is updating processes to better track cancer patients' progress. 

November 7, 2023

Kaiser Permanente fined $18K by OSHA for MRI accident

A nurse was crushed between a bed and MRI machine, resulting in serious injuries.

October 25, 2023

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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