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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Radiologists still reading more lower extremity MRIs than nonradiologists, especially on weekends

Nonradiologists such as orthopedic surgeons are interpreting a growing number of musculoskeletal imaging examinations. According to a new study published in the American Journal of Roentgenology, however, radiologists are still performing a lion’s share of the work, including a much higher percentage of weekend reads and clinically complex patients.

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Researchers use deep learning to detect cartilage lesions in knee MR images

Deep learning technology can be used to evaluate MR images of the knee, according to a new study published in Radiology.

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Google, Flywheel partner for 1st cloud-based MRI research center at Columbia

Research informatics company Flywheel and the Google Cloud Platform have partnered to launch the first node of a cloud-based Columbia University MR Research Center, according to a statement released this week.

North Carolina surgeon’s effort to make MRIs affordable impeded by state law

A surgeon attempting to make MRIs more affordable for North Carolina residents filed a lawsuit Monday, July 30, in the state’s Superior Court to overturn a law that’s barring him from purchasing his own MR machine, Vox has reported.

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Florida medical center first in US to install new Canon Medical Systems MR theater

Parrish Medical Center in Titusville, Florida, has installed the first Vantage Titan / Zen Edition 1.5T MR Theater from Canon Medical Systems in the entire country.

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36% of MRI facilities fail to meet Joint Commission guidelines

More than one-third of MRI facilities fail to adhere to the 2015 Joint Commission’s Revised Requirements for Diagnostic Imaging Services, according to a survey conducted by global MRI safety firm Metrasens. 

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Patient at Massachusetts hospital breaks facial bone after ‘freak accident’ in MRI suite

An MRI patient in Lowell, Massachusetts, sustained a facial fracture last month after a technologist at Lowell General Hospital Saints Campus introduced a metal hamper to the room, causing the hamper to fly toward the MRI’s magnet and strike the man in his face, the Lowell Sun reported.

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The evolution of the EMR: Radiologists reveal how they’d react to a new system

Radiology leaders responded this week to a difficult hypothetical—something the Journal of the American College of Radiology itself called a “devilish dilemma”: What would they do if their hospitals insisted on permanently switching to a new electronic medical record (EMR) without first consulting them?

Around the web

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.

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.

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