News | April 13, 2008

MRI Better Than MDCT in Detecting Endoleaks

April 14, 2008 - Contrast-enhanced MR imaging is significantly superior to 16 slice multidetector CT in the detection of endoleaks after endovascular repair of abdominal aortic aneurisms (EVAR), according to a recent study conducted by researchers at Ospedale San Giovanni in Bellinzona, Switzerland.

"Endovascular repair of abdominal aortic aneurysms has become a viable alternative treatment to open surgery for many patients. Endoleak development represents a complication of endovascular aortic aneurysm repair and is characterized by blood flow outside the stent-graft lumen but within the aneurysm sac," said Rolf Wyttenbach, M.D., lead author of the study. "Patients after EVAR need livelong imaging surveillance to detect endoleaks. CT is most commonly used for imaging follow-up of these patients. , A few prior studies suggested that MRI may be superior to CT for the detection of endoleaks. However, these studies mostly used single or 4-row MDCT and standard gadolinium contrast media for MR imaging," he said.

The study consisted of 43 patients who had undergone EVAR. Each of the patients had both MDCT and MRI within one week of the procedure. According to the study, MRI was performed using a high relaxivity contrast medium and for MDCT, an iodine containing agent was used. Upon the completion of the study, two observers evaluated MRI and MDCT separately.

The study showed that 21 endoleaks were detected in 18 patients. Sensitivity, specificity and accuracy for endoleak detection were 100percent, 96percent and 98percent for reader 1 and 90percent, 81percent and 85percent for reader 2 on MRI and 48percent, 96percent and 74percent for both readers on MDCT.

"The results indicate that MR is a good choice for diagnosing endoleaks. In addition, MRI does not expose the patients to radiation and the MR contrast agent is less nephrotoxic in the clinically used dose compared to iodinated contrast agents used for CT. For this reason MRI may become a preferred imaging modality to follow-up patients after endovascular aneurysm repair," said Dr. Wyttenbach.

For more information: www.arrs.org

Related Content

HeartVista Announces One Click Autonomous MRI Solution
News | Magnetic Resonance Imaging (MRI) | November 25, 2018
HeartVista announced its artificial intelligence (AI)-driven, One-Click Autonomous MRI acquisition software for cardiac...
Carotid Artery MRI Improves Cardiovascular Disease Risk Assessment
News | Magnetic Resonance Imaging (MRI) | October 23, 2018
Magnetic resonance imaging (MRI) measurements of wall thickness in the carotid arteries improve cardiovascular disease...
FDA Clears Magnetom Sola 1.5T MRI From Siemens Healthineers
Technology | Magnetic Resonance Imaging (MRI) | October 09, 2018
The U.S. Food and Drug Administration (FDA) has cleared the Magnetom Sola, a 1.5 Tesla magnetic resonance imaging (MRI...
Stress Cardiac MRI Shows High Prognostic Value for Suspected Ischemia Patients
News | Magnetic Resonance Imaging (MRI) | September 17, 2018
Raymond Kwong, M.D., MPH, from the Harvard Medical School recently presented his findings on a study of how single-...
Rapid Cardiac MRI Technique May Cut Costs, Boost Care in Developing World
News | Magnetic Resonance Imaging (MRI) | August 29, 2018
A newly developed rapid imaging protocol quickly and cheaply diagnosed heart ailments in patients in Peru, according to...
Videos | Magnetic Resonance Imaging (MRI) | August 13, 2018
Haojie Wang, M.D., director of advanced cardiovascular MRI and a member of the heart valve clinic at Baylor Scott Whi
High Prevalence of Atherosclerosis Found in Lower Risk Patients
News | Magnetic Resonance Imaging (MRI) | June 08, 2018
Whole-body magnetic resonance angiography (MRA) found a surprisingly high prevalence of atherosclerosis in people...
A cardiac MRI scanner at the Houston Methodist DeBakey Heart and Vascular Center. There is growing concern that gadolinium contrast may cause chronic health problems in some patients.

A cardiac MRI scanner at the Houston Methodist DeBakey Heart and Vascular Center. There is growing concern that gadolinium contrast may cause chronic health problems in some patients.

Feature | Magnetic Resonance Imaging (MRI) | February 28, 2018 | Dave Fornell
One of the biggest concerns in radiology in recent years is the safety of gadolinium-based contrast agents (GBCAs) us
Contrast-Free Cardiac MRI May Better Assess Need for Mitral Valve Surgery
News | Magnetic Resonance Imaging (MRI) | February 27, 2018
A new study published in the Journal of the American College of Cardiology confirms non-invasive cardiac magnetic...
The FDA has cleared the Toshiba Vantage Galan 3.0T XGO Edition MRI from Canon Medical Systems.
Technology | Magnetic Resonance Imaging (MRI) | February 12, 2018
February 12, 2018 — Physicians now have access to more neuro and cardiac ...
Overlay Init