Table 2.
TAFE-derived coronary blood flow in perfusion CT and CCTA.
| Perfusion CT | N of vessel | CBF (ml/min) | Vessel-specific MBF, by whole MBF (ml/min) x %fractional myocardial mass | Correlation coefficient | P for correlation |
|---|---|---|---|---|---|
| All | 76 | 51.2 (40.5–65.7) | 55.3 (42.9–69.2) | 0.83 | <0.001 |
| LAD | 30 | 58.7 (48.5–84.5) | 61.6 (54.8–74.4) | 0.86 | <0.001 |
| LCX | 30 | 40.3 (29.0–50.4) | 43.5 (33.5–55.0) | 0.76 | <0.001 |
| RCA* | 16 | 59.6 (45.8–76.7) | 60.5 (48.6–67.7) | 0.74 | <0.001 |
| CCTA | N of vessel | CBF (ml/min) | Vessel-specific MBF assumed to be normal vessel, by 0.9 (ml/g/min) × fractional myocardial mass (g) | Correlation coefficient | P for correlation |
| All | 290 | 43.7 (28.0–61.2) | 47.1 (33.9–49.3) | 0.84 | <0.001 |
| LAD** | 98 | 49.6 (36.2–61.7) | 54.6 (42.0–70.2) | 0.71 | <0.001 |
| LCX | 99 | 27.0 (19.1–36.5) | 29.2 (21.6–41.7) | 0.80 | <0.001 |
| RCA** | 93 | 57.0 (42.7–73.6) | 55.1 (46.2–66.9) | 0.83 | <0.001 |
*Not all RCA was available (n = 14) because the Z-axis coverage of perfusion imaging was 73 mm.
**Hypoplastic vessels (n = 7) were not included.