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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Offshoot of digital mammography could provide alternative to breast MRI

An adaptation of digital mammography could cut image acquisition times and provide a new screening method to patients unable to undergo breast MRI, but added time commitments could make the technique difficult to implement in clinical practice, a case study published in the Journal of the American College of Radiology suggests.

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Increased background parenchymal enhancement on screening MRI associated with higher risk of breast cancer

High-risk patients with any amount of background parenchymal enhancement (BPE) beyond the minimum on screening MRI have an increased risk of developing breast cancer, according to a new study published by Academic Radiology.

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Spanish team applies MR imaging to quality control in the meat industry

Scientists at the University of Extremadura in Badajoz, Spain, have found another use for MR imaging—but it has nothing to do with medicine, the Spanish Foundation for Science and Technology has announced.

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UK officials worry patients are getting 'too big' for standard MRI machines

In one of Western Europe’s most overweight areas, British officials are struggling to tackle a growing obesity epidemic that’s barring hundreds of patients from receiving MRI exams, the BBC reported this week.

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NIST paving the way for traceable measurements in the human body via MRI

A novel system that can calibrate medical imaging biomarkers could be paving the way for MRI to make precise, traceable measurements inside the human body, the National Institute of Standards and Technology (NIST) announced late this March.

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Hospital where MRI-related death occurred installing brand new equipment

A 32-year-old man died on Jan. 27 after being sucked into an MRI chamber at BYL Nair Hospital in Mumbai, India. That hospital has now decided to replace the MRI scanner, which had not been used since the incident.

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Canadian health minister promises $11M to reduce MRI wait times

British Columbia, Canada, will be receiving an additional $11 million this year to expand MRI usage across the province, the Canadian Broadcasting Corporation reported this week.

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7-Tesla MRI could be a game-changer for diagnosing, treating brain tumors

A 7-Tesla-strong MRI machine could be changing the way brain tumors are diagnosed and treated, University of Southern California researchers reported this week.

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.