Safety and accuracy of dual-source coronary computed tomography angiography in the pediatric population
作者： B. Kelly Han , Jana Lindberg , David Overman , Robert S. Schwartz , Katharine Grant
DOI: 10.1016/J.JCCT.2012.01.004
关键词:
摘要: Background High heart rates and radiation sensitivity have limited the use of coronary computed tomography angiography (CTA) in pediatric patients. Objective A contemporary evaluation image quality reduction exposure with dual-source CT technology has not been reported a large cohort patients undergoing angiography. Methods Consecutive CTA scans (n = 71) 70 were retrospectively reviewed. Metoprolol was administered for rate control. Scans divided by acquisition mode into 3 groups: retrospective electrocardiogram (ECG)–triggered spiral, prospective ECG-triggered, ECG-triggered high-pitch spiral scans. Heart rate, dose, quality, diagnostic confidence compared between groups. Results Median decrease metoprolol 24% ± 14%. effective age-adjusted dose entire group 0.97 1.20 mSv. Retrospective had median 1.71 1.4 mSv, prospectively 0.9 1.1 0.27 ± 0.4 The difference groups statistically significant ( P Conclusion Dual-source β-blocker protocol uniformly achieves at low Image are excellent all scan modes wide spectrum
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