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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Clinical trial focused on MRI-guided radiation therapy enrolls first patient

Researchers have enrolled the first patient for the Stereotactic MRI-guided On-table Adaptive Radiation Therapy (SMART) Trial, a multi-center clinical trial that will investigate the benefits of MRI-guided, high-dose radiation therapy on patients with inoperable pancreatic cancer.

Aspiration system using real-time MRI guidance gains FDA clearance

Irvine, California-based MRI Interventions announced that it has received FDA clearance for its ClearPoint PURSUIT Neuro Aspiration system. The solution helps surgeons identify an aspiration target using real-time MRI guidance and monitor aspiration during the procedure.

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Researchers in China developing $126M MRI to search for 'the soul'

An MRI scanner to find and study—the soul? Researchers at the Shenzhen Institutes of Advanced Technology are currently working on building a £100 million ($126 million) MRI scanner they say could do just that.

Researchers working to make 15-minute MRI scans a reality

Researchers from the University of Arizona (UA) are working to develop a 15-minute MRI scan for patients with Parkinson’s disease, children and other patient populations who may have issues remaining still for the normal 40-60 minutes.

What brain MRI scans tell us about gadolinium-based contrast agents

When researchers compared brain MRI scans of patients who had previously received gadobutrol, a common gadolinium-based contrast agent (GBCA), with patients not exposed to gadobutrol, they did not observe any visual signal intensity changes. The team noted, however, that patients who received gadobutrol had shorter T1 relaxation times of the globus pallidus.

FDA approves MRI-compatible blood pressure module

IRadimed announced Wednesday, Dec. 19, that the company has gained FDA clearance for its 3883 MRI-compatible blood pressure module.

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Gadolinium not needed for monitoring pediatric thoracic lymphoma with MRI

Teenagers hit by thoracic lymphoma can be safely and effectively imaged for primary staging and follow-up care with MRI unenhanced by gadolinium-based contrast agents—or by any contrast at all.

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How chemical shift-encoded MRI can help obese patients after weight loss treatments

MRI scans can be used to monitor liver fat levels in obese patients who undergo bariatric surgery, according to new findings published in Radiology.

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