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.

RSS icon
Thumbnail

MRI could play central role in community-based screening for prostate cancer, experts say

"If successful, prostate MRI will be able to join mammography and LDCT of the thorax as an imaging screening test that saves lives," experts wrote in JAMA. 

Thumbnail

FDA clears artificial intelligence add-on for ‘world’s first’ portable MR imaging system

Hyperfine said its new deep-learning software can aid in measuring brain structure and pathology in images obtained by its Swoop product. 

Smart Choice MRI

Wisconsin imaging operator Smart Choice MRI goes out of business, closing handful of Midwest centers

The once-promising practice managed 16 or so locations across four markets at its height and had considered expanding to as many as 70, offering MR scans for a $600 flat fee.

Built for value-based care: How the world’s first portable MR scanner is democratizing imaging

Sponsored by Hyperfine

Connecticut-based Hyperfine made waves earlier this year when it announced the arrival of what it calls the “world’s first” portable MRI scanner. Which brings about interesting questions: How does it work? Is it replacing traditional technology? And what has COVID-19 meant for mobile imaging?

Thumbnail

Preventative, elective care plummet nationwide amid pandemic, including drops in mammography, MRI

The JAMA study is one of the first to quantify cuts in such care, authors claim, using data from nearly 7M commercially insured Americans in all 50 states. 

Thumbnail

Acoustic noise reduction in MRI significantly reduces patient discomfort without hurting image quality

Loud sounds emitting from magnetic resonance machines can erode the patient experience, but Swiss experts may have found the fix. 

political brain imaging politics

Scientists look to functional MR brain imaging to understand America’s political divide

Experts from three prominent institutions hope their neuroimaging work will inform new interventions to address partisan discord. 

New 3D imaging technique doubles the visibility of brain tumors on MR scans

Inventor and lead author Robert Edelman, MD, compared the advancement to stargazing at night versus during the day. 

Displaying 649 - 656 of 1060
Design by Adaptive Theme