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Innovative imaging system may boost speed and accuracy in treatment of heart rhythm disorder
Date:8/18/2010

scanner, which takes multiple X-ray images in a matter of seconds as it rapidly spirals around the body, yields three significant types of information about the heart; abnormal cardiac anatomy, blood flow and heart muscle contraction. After two years of testing and customizing software, the research team has succeeded in combining all of these factors into a three-dimensional imaging format that can work accurately with existing equipment in an electrophysiology laboratory, where ablation procedures are performed.

This project builds on the team's earlier work that studied how well a combination of PET (positron emission tomography) and CT technology would provide advanced imaging. Study co-author Jean Jeudy, M.D., a radiologist at the University of Maryland Medical Center and assistant professor of diagnostic radiology and nuclear medicine at the University of Maryland School of Medicine, says information from imaging technologies such as CT and PET has been used independently, up till now. "Each modality has advantages in imaging, but our idea is to pool their strengths to create a synergism that results in the best and safest therapies for patients."

Study design and results

Eleven men with ventricular tachycardia were evaluated in the study. Each had had a heart attack and required an implantable cardioverter-defibrillator to correct problems with their heartbeat. The participants were scanned for a total of 10-15 seconds with a 64-slice CT system. The scan data was reconstructed into 3-D images and compared to the clinical electrical mapping system routinely used to determine where to apply ablations.

The study's principal investigator, Jing Tian, B.M., Ph.D., says CT imaging was used only as a supplement to find the location of scars. To assess the potential value of this novel technology, the research team compared data from the 3-D imaging with the clinical data after ablations were performed on the patients in th
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Contact: Bill Seiler
bseiler@umm.edu
410-328-8919
University of Maryland Medical Center
Source:Eurekalert

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