Table 2 Image quality evaluated with a three-point grading scale (score 1 corresponded to excellent image quality, score 2 to moderate image quality and score 3 to insufficient image quality).

From: Image Quality and Radiation Dose for Prospectively Triggered Coronary CT Angiography: 128-Slice Single-Source CT versus First-Generation 64-Slice Dual-Source CT

Image quality

128-MSCT

DSCT

P

Score 1

482 (91.6%)

531 (97.6%)

≤0.001

Score 2

36 (6.9%)

9 (1.7%)

≤0.001

Score 3

8 (1.5%)

4 (0.7%)

≤0.001

  1. More segments received a score of 1 in the DSCT group than in the 128-slice CT group (P = 0.001). More segments with diagnosable image quality (scores 1 and 2) were found in the DSCT group than in the 128-MSCT group (P = 0.00012).
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