Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

MRI better than MDCT in detecting endoleaks

14.04.2008
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, MD, 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 100%, 96% and 98% for reader 1 and 90%, 81% and 85% for reader 2 on MRI and 48%, 96% and 74% 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.

Necoya Tyson | EurekAlert!
Further information:
http://www.arrs.org

More articles from Studies and Analyses:

nachricht Drought hits rivers first and more strongly than agriculture
06.09.2018 | Max-Planck-Institut für Biogeochemie

nachricht Landslides triggered by human activity on the rise
23.08.2018 | European Geosciences Union

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Goodbye, silicon? On the way to new electronic materials with metal-organic networks

Scientists at the Max Planck Institute for Polymer Research (MPI-P) in Mainz (Germany) together with scientists from Dresden, Leipzig, Sofia (Bulgaria) and Madrid (Spain) have now developed and characterized a novel, metal-organic material which displays electrical properties mimicking those of highly crystalline silicon. The material which can easily be fabricated at room temperature could serve as a replacement for expensive conventional inorganic materials used in optoelectronics.

Silicon, a so called semiconductor, is currently widely employed for the development of components such as solar cells, LEDs or computer chips. High purity...

Im Focus: Storage & Transport of highly volatile Gases made safer & cheaper by the use of “Kinetic Trapping"

Augsburg chemists present a new technology for compressing, storing and transporting highly volatile gases in porous frameworks/New prospects for gas-powered vehicles

Storage of highly volatile gases has always been a major technological challenge, not least for use in the automotive sector, for, for example, methane or...

Im Focus: Disrupting crystalline order to restore superfluidity

When we put water in a freezer, water molecules crystallize and form ice. This change from one phase of matter to another is called a phase transition. While this transition, and countless others that occur in nature, typically takes place at the same fixed conditions, such as the freezing point, one can ask how it can be influenced in a controlled way.

We are all familiar with such control of the freezing transition, as it is an essential ingredient in the art of making a sorbet or a slushy. To make a cold...

Im Focus: Micro energy harvesters for the Internet of Things

Fraunhofer IWS Dresden scientists print electronic layers with polymer ink

Thin organic layers provide machines and equipment with new functions. They enable, for example, tiny energy recuperators. In future, these will be installed...

Im Focus: Dynamik einzelner Proteine

Neue Messmethode erlaubt es Forschenden, die Bewegung von Molekülen lange und genau zu verfolgen

Das Zusammenspiel aus Struktur und Dynamik bestimmt die Funktion von Proteinen, den molekularen Werkzeugen der Zelle. Durch Fortschritte in der...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Conference to pave the way for new therapies

17.10.2018 | Event News

Berlin5GWeek: Private industrial networks and temporary 5G connectivity islands

16.10.2018 | Event News

5th International Conference on Cellular Materials (CellMAT), Scientific Programme online

02.10.2018 | Event News

 
Latest News

Nanocages in the lab and in the computer: how DNA-based dendrimers transport nanoparticles

19.10.2018 | Life Sciences

Thin films from Braunschweig on the way to Mercury

19.10.2018 | Physics and Astronomy

App-App-Hooray! - Innovative Kits for AR Applications

19.10.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>