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.

Screening tool helps find pediatric patients who can undergo an MRI without anesthesia

A new screening tool can identify pediatric patients who could potentially undergo an MRI without anesthesia, according to a study published in the Journal of the American College of Radiology.

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MRI shows how music alters brain activity in beatboxers, guitarists

Scientists from University College London used MRI to show how music can change our brain, finding neural activity in guitarists, beatboxers and non-musicians differed when listening to various sounds.

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Q&A: NYU’s Daniel Sodickson on AI, Facebook and the importance of making MRI scans faster

The NYU School of Medicine’s department of radiology and Facebook recently announced a new collaborative research project focused on using artificial intelligence (AI) to make MRI scans up to 10 times faster.

MRI-defined EMVI can accurately determine recurrence, mortality in rectal cancer patients

Extramural venous invasion (EMVI) can be reliably evaluated with MRI in patients with locally advanced rectal cancer treated with neoadjuvant chemotherapy–radiation therapy followed by surgery, according to new research published in Radiology.

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fMRI reveals how cannabis helps patients at a high risk of psychosis

Cannabidiol (CBD), a major constituent of cannabis, has been found to have a therapeutic effect on patients with psychosis. That therapeutic effect may be a result of how CBD partially normalizes alterations found in the brains of patients at a high risk of psychosis, according to new fMRI research published in JAMA Psychiatry.

Questions remain months after MRI-related death in Mumbai

Back in January, a 32-year-old man from Mumbai, India, died after being sucked into an MRI chamber while holding an oxygen cylinder. More than seven months later, the fate of the two hospital employees suspended due to the incident remains unclear.

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5 keys to maintaining a safety program in the MRI suite

No matter how much safety planning and training occur in a radiology department, accidents can still happen in the MRI suite—and they are often dramatic and unpredictable. An article published online Aug. 24 in the Journal of the American College of Radiology details the experience of a team from the University in Seattle in implementing training and risk management procedures.

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Breast MRI improves quality of care for DCIS patients

Performing MRI on patients with non-invasive breast cancer can provide additional value, according to a new study published in Academic Radiology.

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.