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CT angiography highly accurate, multicenter trials show
Date:11/26/2007

CHICAGO Computed tomography (CT) angiography is as accurate as an invasive angiogram in detecting coronary artery disease, according to the findings of the first two prospective multicenter 64-slice scanner trials presented today at the annual meeting of the Radiological Society of North America (RSNA).

These two trials with comparable results clearly set the stage for the widespread adoption of and reimbursement for coronary artery CT examinations, said Gerald D. Dodd III, M.D., chair of the Department of Radiology at the University of Texas Health Science Center in San Antonio.

For the Coronary Artery Evaluation Using 64-Row Multidetector Computed Tomography Angiography (CORE-64) Trial, researchers at nine international centers studied 291 patients who were scheduled to undergo invasive coronary angiography for suspected or unknown coronary artery disease. The study found that 64-slice multidetector CT angiography was highly accurate in detecting blockages of greater than 50 percent, with a sensitivity of 85 percent and a specificity of 90 percent. The noninvasive exam was equal in accuracy to invasive angiography in its ability to identify patients to be referred for angioplasty or bypass surgery.

Reliable assessment of the presence of coronary blockages and accurate prediction of coronary revascularizations are feasible with 64-slice CT coronary angiography, said presenter Marc Dewey, M.D., radiologist at Humboldt University Berlin, Charit, Germany. Patients with low to intermediate risk of having coronary blockages are most likely to benefit from coronary CT angiography, since in those patients the necessity of invasive angiography is greatly reduced.

The Assessment by Coronary Computed Tomographic Angiography of Individuals UndeRgoing InvAsive Coronary AngiographY (ACCURACY) Trial compared 64-row coronary computed tomographic angiography (CCTA) to quantitative coronary angiography (QCA). The results demonstrated that
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Contact: Linda Brooks
lbrooks@rsna.org
630-590-7762
Radiological Society of North America
Source:Eurekalert

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