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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Wales lags behind England in multiparametric MRI availability

Welsh men may be at a disadvantage compared to other countries in the United Kingdom when it comes to early diagnosis of prostate cancer. According to Prostate Cancer UK, availability of multiparametric MRI (mpMRI) is significantly lower in Wales than England, its neighbor to the east.

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Chinese team develops MRI-compatible robot to facilitate neurosurgery

A team of Hong Kong scientists led by Kwok Ka-wai, PhD, have developed the world’s first intraoperative MRI-guided robot for bilateral stereotactic neurosurgery, opening new doors for less invasive, safer and more accurate treatment of conditions like Parkinson’s disease.

Untraditional teaching tool underscores importance of MRI safety for radiology trainees

Applying an alternative deep learning, assessment-based approach to radiology education could help trainees better retain information for use in future work, according to a study published in Radiography this month.

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Can biparametric MRI accurately detect prostate cancer?

Research from the last 17 years shows that biparametric MRI (bpMRI) gives radiologists an accurate tool for detecting prostate cancer (PCa), according to a new meta-analysis published by the American Journal of Roentgenology.

MRI finds brains of children hooked on video games similar to those of drug, alcohol addicts

An MRI study out of California has found excessive social media and addictive video games can have an effect on children’s brains similar to that of drug abuse or alcoholism.

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Arterial spin labeling MRI explains cognitive dysfunction in young kidney disease patients

Arterial spin labeling MRI may offer a noninvasive alternative for quantifying cerebral blood flow without the use of contrast agents—a necessity for patients with illnesses like kidney disease, researchers wrote in a Radiology study this June.

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MRI adds value to endometrial cancer prognosis

Including MRI in the routine evaluation of endometrial cancer could help assess the aggressiveness of tumors while stratifying which patients may benefit from surgeries like lymphadenectomy, researchers reported in Clinical Radiology this June.

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Auburn launches interdisciplinary MRI trial to study brain plasticity

A $90,000 grant from the National Endowment for the Arts is offering Auburn University imagers an opportunity to study the effect art classes can have on brain plasticity, the university announced this week. Results could have important implications for how cognitive impairment cases are handled.

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.