320-row scanner cuts contrast dose in coronary CTA
Contrast media dose can be reduced in coronary CT angiography (CCTA) scans acquired with a 320-detector-row scanner without significantly affecting image quality, according to a study in the October edition of the American Journal of Roentgenology.
Researchers from Brigham and Women’s Hospital and Harvard Medical School analyzed 108 CCTA exams acquired with a 320-detector-row CT scanner. They found that a contrast media protocol based on 60 mL of contrast “had sufficient enhancement in more than 96% of coronary segments,” said study co-author Dr. Frank Rybicki in a statement accompanying the study’s release (AJR, October 2011, Vol. 197:4, pp. 844-859).
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