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.

Toshiba Medical Launches New MR to Enhance Patient Comfort in Community Hospital Settings

Vantage Elan / Zen Edition 1.5T Delivers Smart Technology for Quiet, Fast and Accurate Exams

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Could unenhanced MR replace CT when diagnosing pediatric appendicitis?

Ultrasonography followed by CT is often viewed as the industry standard for diagnosing pediatric appendicitis, but could unenhanced MR imaging, used in place of CT, produce similar results?

Hitachi Healthcare Americas Introduces SynergyDrive MRI Workflow Solution

Hitachi’s latest update to its MR workflow solutions is available at RSNA17 

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RSNA 2017: Web glossary helps patients decipher MRI reports

With the ubiquity of electronic medical records combined with online patient portals, patients have easier access to physicians’ reports than ever before. But understanding those documents is another matter altogether.

Could MRI coils mimicking 'second skin' be a tool in MRI efficacy, patient experience?

Numerous barriers in MRI, including the bulkiness of coils, can prevent radiologists from obtaining accurate and high-quality images of children during scans or obtaining images at all.

MRI unveils rare ‘sagging brain syndrome’

A recent story in the New York Times describes how Adam Weinstein, MD, received a call from a neuroradiologist reviewing the patient’s MRI. The man was suffering from a rare condition known as "sagging brain syndrome."

PTSD linked to larger brain responses via MRI

Using MRI to measure brain activity, researchers have shown patients with post-traumatic stress disorder (PTSD) have larger brain responses in the locus coerulus, a region that controls arousal and reactivity.

Inmate: 'Something is eating my brain'; MRI, CT show he was right

In December 2016, Marques Davis, a 27-year-old inmate in a prison outside of Witchita, Kansas, claimed that he wasn't feeling right. "It feels like something is eating my brain," he said.

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.