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.

Wisconsin researchers combat obesity with fat-measuring MRI

Researchers from UW-Madison have developed an MRI-based fat quantification method that separately measures brown adipose tissue (BAT) and white adipose tissue (WAT).

August 19, 2016

Study uses MRI to link breast-feeding, intelligence

The health benefits associated with breast-feeding are many, including lower risk of SIDS, descreased cancer rates and stronger immune systems. A recent study used MRIs to show increased intelligence in premature babies who were breast-fed.

August 12, 2016

Hitachi Medical announces software upgrade for MRI systems

Hitachi Medical Systems America announced this week that it has released Evolution 5, a significant software upgrade to its Oasis 1.2T MRI systems. 

August 11, 2016

A dead fish might have called 17,000 fMRI-based studies into question

In the last 25 years, functional MRIs have become an important part of neurological research, as physicians and other scientists use its techniques to look inside the brain. But what if long-held assumptions about what is standard and how to correct for outliers have been wrong? 

August 8, 2016

MRI test reveals age fraud by Nigerian youth soccer team

MRI testing to prevent age fraud by youth soccer teams produced some shocking results. All but two players on the under-17 Nigerian squad were ineligible, leaving the team unable to play in an upcoming tournament.

August 4, 2016

Nanoparticles could improve MRI contrast

A team of scientists who have developed nanoparticles capable of improving MRI signals tenfold, reports AZO Nano.

August 4, 2016

MRI images are clearer with new superconducting coil

Researchers from the University of Houston have developed a high-temperature superconducting coil for magnetic resonance imaging (MRI) scanners that can lead to images with higher resolution when compared to conventional coils.

July 20, 2016
Mammography workstation at Georgia Regents Medical Center

Diffusion-weighted MRI shows potential for finding cancers in patients with dense breasts

Researchers believe diffusion-weighted MRI (DWI) has potential as a “rapid supplemental screening tool,” according to a study published in the American Journal of Roentgenology. Their findings show that DWI can help radiologists see mammographically occult cancers in at-risk women with dense breasts.

July 8, 2016

Around the web

"This was an unneeded burden, which was solely adding to the administrative hassles of medicine," said American Society of Nuclear Cardiology President Larry Phillips.

SCAI and four other major healthcare organizations signed a joint letter in support of intravascular ultrasound. 

The newly approved AI models are designed to improve the detection of pulmonary embolisms and strokes in patients who undergo CT scans.

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