The reverse relationship was observed for contrast (30% ASIR, 1.00; 95% CI, 0.95–1.05; P = 0.99; 60% ASIR: 1.01; 95% CI, 0.96–1.06; P = 0.76) and CNR (30% ASIR: 1.09; 95% CI, 1.02–1.15; P = 0.006; 60% ASIR: 1.26; 95% CI, 1.19–1.34; P < 0.0001). In the linear regression analysis, the anatomical ROI position was taken into consideration, showing a highly significant difference for contrast, noise, and CNR.
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Influence of adaptive statistical iterative reconstruction algorithm on image quality in coronary computed tomography angiography.
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