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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FDA announces Class I recall of 150 MRI scanners due to risk of explosion

Just one explosion has been reported due to this issue, but the risk is considered severe enough to require a recall. 

PHOTO GALLERY: New technology at RSNA 2023

Images from the world's largest radiology conference include new technologies and the latest advances in MRI, CT, nuclear medicine, X-ray, artificial intelligence, and PACS/enterprise imaging.

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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.

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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.

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. 

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. 

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. 

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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. 

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Global shortage of nuclear imaging isotopes may be over

The nuclear imaging isotope shortage of molybdenum-99 may be over now that the sidelined reactor is restarting. ASNC's president says PET and new SPECT technologies helped cardiac imaging labs better weather the storm.

Cardiovascular Business
‘A huge win’: CMS significantly increases Medicare payments for cardiac CT

CMS has more than doubled the CCTA payment rate from $175 to $357.13. The move, expected to have a significant impact on the utilization of cardiac CT, received immediate praise from imaging specialists.

Cardiovascular Business
GE HealthCare moves PET/CT scanner production to United States

The all-in-one Omni Legend PET/CT scanner is now being manufactured in a new production facility in Waukesha, Wisconsin.

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