Magnetic Resonance Imaging

Cardiac magnetic resonance imaging MRI is used as both a functional and anatomical cardiac imaging test. It offers excellent soft tissue detail and the ability to quantify cardiac function. MRI scans can be performed with or without gadolinium contrast depending on what information is needed. Unlike computed tomography (CT), MRI does not use X-ray radiation, but patients with metal implants may have contraindications for MRI use because MR will heat up most metal objects. MRI exams usually take much longer than CT 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.

Kate Hanneman, MD, University Of Toronto, explains why vendors and hospitals are increasingly discussing lowing their carbon footprint by starting with radiology. 

What does radiology have to do with climate change?

Kate Hanneman, MD, explains why many vendors and hospitals want to lower radiology's impact on the environment. "Taking steps to reduce the carbon footprint in healthcare isn’t just an opportunity," she said. "It’s also a responsibility."

March 1, 2024
An example of cardiac MRI myocardial blood flow reserve (MBFR) imaging. Image courtesy of https://doi.org/10.3390/diagnostics10090679

Imaging group thrilled with new CPT codes for MBFR measurements

The Society for Cardiovascular Magnetic Resonance applauded two new CPT Category III codes for myocardial blood flow reserve (MBFR) assessments.

February 16, 2024
João Cavalcante, MD, Minneapolis Heart Institute, spoke at the Radiological Society of North America (RSNA) 2023 meeting to try and get more radiologists interested in cardiac imaging to help fill the rising need for cardiac imagers on structural heart teams and a growing number of other types of heart and acute care teams.

Filling the crucial role of multimodality imagers on the heart team

João Cavalcante, MD, spoke at RSNA 2023 about key topics and tried to get more radiologists interested in cardiac imaging.

December 15, 2023

Multidisciplinary quality improvement initiative significantly improves on-time starts for cardiac MRI

Such delays can result in longer patient fasts, extended wait times, and poor synchronization of anesthesia induction, researchers detailed in JACR

October 16, 2023
Marcelo DiCarli, MD, chief, division of nuclear medicine and molecular imaging, executive director for the cardiovascular imaging program, Brigham and Women's Hospital, discusses how artificial intelligence (AI) is impacting cardiac imaging.

What is the ROI for adopting AI in cardiac imaging?

Marcelo DiCarli, MD, and Rob Beanlands, MD, discussed the long-term value of investing in the development and implementation of AI technologies. 

May 11, 2023
COVID-19 vaccine vaccination myocarditis heart damage inflammation RSNA imaging radiology cardiology

Heart inflammation remains 2 months later in some patients with COVID-19 vaccine-related myocarditis

A team of cardiologists and radiologists collaborated on the study, using advanced imaging to take a closer look at the long-term impact of vaccination. 

March 9, 2023

Fatal accident calls MRI safety standards into question—are more regulations needed?

There are a number of well-intended recommendations for preventing MRI injuries, but many of them stop short of implementing safety requirements.

February 24, 2023
mixed reality LAAO Chase Western Reserve MRI. The group—which includes engineers, cardiologist, radiologists and other specialists—will attempt to perform a robotic-controlled left atrial appendage occlusion (LAAO) on a patient inside an MRI scanner.

Researchers receive $3.7M to attempt robotic heart surgery inside MRI scanner

The group—which includes engineers, cardiologist, radiologists and other specialists—will attempt to perform a robotic-controlled left atrial appendage occlusion (LAAO) on a patient inside an MRI scanner.

October 20, 2022

Around the web

"This was an unneeded burden, which was solely adding to the administrative hassles of medicine," said American Society of Nuclear Cardiology President Larry Phillips.

SCAI and four other major healthcare organizations signed a joint letter in support of intravascular ultrasound. 

The newly approved AI models are designed to improve the detection of pulmonary embolisms and strokes in patients who undergo CT scans.

Trimed Popup
Trimed Popup