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.

Routine MRI measurements as accurate as invasive testing for heart failure
New findings suggest that measurements of blood oxygen acquired via T2 mapping during routine MRI scans could provide the same information on heart health as catheterization procedures.
Some patients more prone to MRI motion, with key implications for scheduling, procedure prep
Movement during these exams can have downstream consequences such as diagnostic uncertainty, higher costs from repeat scans, and delayed clinical decision-making.
MRI findings link fat distribution to risk of cognitive decline
Not all fat is created equal, and some specific types carry more neurological consequences than others, according to new research.
Radiology practice SimonMed Imaging launches new ‘longevity screening’ division
The elective exams have previously been delivered under the SimonONE brand and will be folded into the rest of the radiology practice for greater service integration.
MRI findings reveal how spaceflight changes the brain
New data suggest that spending an extended period of time in a zero-gravity environment causes the brain to become somewhat displaced.

MRI technique reduces low-value surgeries for patients with colorectal cancer

Though effective, surgery for colorectal peritoneal metastases is accompanied by a high risk of major morbidity, making the decision to undergo the procedure complex for many patients.

Siemens Healthineers' latest 'helium-free' MRI nabs FDA clearance

The health tech company announced the news Thursday, noting that the platform should help facilities address the growing demand for imaging.

Sarah-Jane James, CT, MRI, molecular imaging senior market analyst for Signify Research, explains key trends in imaging systems she saw at the Radiological Society of North America (RSNA) 2025 meeting.

Key trends in medical imaging systems at RSNA 2025

Sarah-Jane James, imaging market analyst for Signify Research, discusses key trends in the specialty that she saw at the Radiological Society of North America's annual meeting.

PHOTO GALLERY: Radiology technologies at RSNA 2025

See some of the latest medical imaging technologies from around the expo floor at the 2025 Radiological Society of North America (RSNA) meeting.

Neuroimaging not necessary for all patients who present to ED with vertigo

The decision to utilize such scans is challenging for emergency providers, with the condition most often of benign origin, according to new research published in the journal of Emergency Radiology.

New iron-based imaging agent significantly improves brain tumor visualization

Ferumoxytol is used primarily in medications that treat anemia, but the FDA recently cleared it for deployment in brain imaging as well.

ST-RADS scoring system for predicting risk of soft tissue tumor malignancy

Scoring system outperforms standard radiology reports for predicting soft tissue tumor malignancy

The Soft-Tissue Tumor Reporting and Data System (ST-RADS) is an MRI framework that was designed to assess the risk of soft tissue tumors and help providers in managing the finding.

Mindfulness improves brain connectivity, MRI data show

Mindfulness-based stress reduction techniques combine meditation, bodily awareness exercises and yoga to temper stress and anxiety.

Magnetic Resonance Imaging

Routine MRI measurements as accurate as invasive testing for heart failure

Some patients more prone to MRI motion, with key implications for scheduling, procedure prep

MRI findings link fat distribution to risk of cognitive decline

Radiology practice SimonMed Imaging launches new ‘longevity screening’ division

MRI findings reveal how spaceflight changes the brain