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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New GBCA uses 60% less gadolinium

Bayer’s latest contrast agent is proving its potential in clinical trials as a promising alternative to agents with higher gadolinium content. 

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Advanced MRI techniques may provide insight into brain damage stemming from youth sports

The study is part of a bigger effort to understand why some children recover better than others following head injuries.

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Basketball players' brains are wired differently, new MRI data suggest

Although some form of neural superiority may not be the driving factor behind an elite athlete’s talent, new evidence shows these individuals have unique structure and connectivity patterns.

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Altered brain structure may play a role in eating disorders, MRI data suggest

Experts recently uncovered evidence suggesting  behaviors such as undereating, binging and purging could be owed to anatomical alterations in parts of the brain. 

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Abbreviated MRI protocols present suitable alternatives for liver cancer screening

Ultrasound is routinely used to screen for HCC. However, its utility is limited by numerous factors, including patient body habitus, operator experience and certain liver conditions, all of which contribute to decreases in sensitivity. 

technologist remote scanning Philips Radiology Operations Command Center ROCC

Imaging leaders share 7 key considerations for remote scanning programs

A new AHRA report provides an in-depth overview of concerns related to remote operations, highlighting everything from safety issues to regulatory oversight.

UCSF professor using ilumr desktop MRI

'Desktop' MRI brings physics education to the classroom

The tabletop scanner provides students with more hands-on opportunities to learn about the processes that drive the modality’s imaging capabilities.  

PHOTO GALLERY: Medical imaging technology at RSNA 2024

Take a virtual tour around the Radiological Society of North America (RSNA) meeting to see the sights and new technologies displayed across the vast exhibit hall floors.

Around the web

GE HealthCare designed the new-look Revolution Vibe CT scanner to help hospitals and health systems embrace CCTA and improve overall efficiency.

Clinicians have been using HeartSee to diagnose and treat coronary artery disease since the technology first debuted back in 2018. These latest updates, set to roll out to existing users, are designed to improve diagnostic performance and user access.

The cardiac technologies clinicians use for CVD evaluations have changed significantly in recent years, according to a new analysis of CMS data. While some modalities are on the rise, others are being utilized much less than ever before.