Test–Retest Repeatability for SNR and CNR Obtained for STD- and PRC-Based Reconstructions
| Parameter | LAD | LCx | RCA | Global |
|---|---|---|---|---|
| SNR | ||||
| STD, rest | 0.33 (−0.08–0.66) | 0.31 (−0.10–0.65) | 0.29 (−0.14–0.63) | 0.39 (−0.03–0.70) |
| STD + PRC, rest | 0.41 (−0.47–0.72) (P = 0.58) | 0.54 (0.11–0.79) (P = 0.17) | 0.36 (−0.08–0.69) (P = 0.70) | 0.36 (−0.12–0.70) (P = 0.70) |
| STD, stress | 0.41 (0.01–0.71) | 0.35 (−0.09–0.68) | 0.45 (0.04–0.73) | 0.35 (−0.03–0.70) |
| STD + PRC, stress | 0.34 (−0.04–0.66) (P = 0.69) | 0.33 (−0.05–0.65) (P = 0.65) | 0.32 (−0.06–0.64) (P = 0.45) | 0.35 (−0.10–0.68) (P = 1.00) |
| CNR | ||||
| STD, rest | 0.35 (−0.06–0.66) | 0.32 (−0.10–0.65) | 0.29 (−0.14–0.63) | 0.27 (−0.17–0.62) |
| STD + PRC, rest | 0.43 (−0.02–0.73) (P = 0.65) | 0.55 (0.14–0.80) (P = 0.22) | 0.35 (−0.10–0.68) (P = 0.75) | 0.35 (−0.01–0.69) (P = 0.75) |
| STD, stress | 0.43 (0.03–0.72) | 0.36 (−0.08–0.68) | 0.48 (0.07–0.75) | 0.41 (−0.01–0.71) |
| STD + PRC, stress | 0.29 (−0.08–0.62) (P = 0.43) | 0.29 (−0.08–0.62) (P = 0.70) | 0.27 (−0.09–0.59) (P = 0.23) | 0.35 (−0.11–0.67) (P = 0.73) |
LAD = left anterior descending coronary artery; LCx = left circumflex coronary artery; RCA = right coronary artery.
Data are intraclass correlation coefficients followed by 95% CI. P values were obtained from Fisher Z-test (test for differences across 2 reconstruction methods).