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.

3-D-printed model of stenotic intracranial artery enables vessel-wall MRI standardization

A collaboration between stroke neurologists at the Medical University of South Carolina (MUSC) and bioengineers at the University of Massachusetts has led to the creation of a realistic, 3D-printed phantom of a stenotic intracranial artery that is being used to standardize protocols for high-resolution MRI, also known as vessel-wall MRI, at a network of U.S. and Chinese institutions, according to an article published online March 9, 2017 by the Journal of NeuroInterventional Surgery.  

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Hyperpolarized helium MRI tests effectiveness of cystic fibrosis drug

More than 30,000 Americans have cystic fibrosis, a genetic lung disorder that affects the pancreas and other organs, according to the Cystic Fibrosis Foundation. Although there is no cure, there is a drug approved by the U.S. Food and Drug Administration (FDA) that treats the underlying cause of the disease.

MRI machines can cause serious damage if patients, professionals aren't careful

A recent article in the Boston Globe outlined various dangers associated with MRI scans.

Northwestern Memorial unveils Illinois' first combined MRI-PET scanner

Northwestern Memorial Hospital in Chicago has become first in Illinois to house a combined MRI and PET scanner, a machine that reduces the time a patient spends on imaging tests, while producing quality images at lower doses of radiation.

Cost of MRI varies drastically by state, type of facility

MRI costs vary drastically from facility to facility, according to an analysis from Amino, a startup using big data to match patients with providers. American consumers are paying more out of pocket for healthcare than ever before, so choosing where to receive care is a more impactful decision than it’s been in the past.

GE Healthcare to expand its production of MRI components

GE Healthcare recently announced a $40 million expansion to its existing MRI components production operations in Florence County, South Carolina.

Knee-jerk reaction? MRI inspires rad tech to pursue career

Radiology as a field is powered by the passion of its professionals. For one registered technologist, that desire to pursue a career in the field was sparked by a tweaked knee that required an MRI.

Researchers working to develop MRI-powered mini robots to deliver treatment

Researchers from the University of Houston and Houston Methodist Hospital are working to develop and deploy MRI-powered mini robots to travel the body’s venous system delivering drugs or a self-assembled interventional tool as treatment.

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.