Table 2 TAFE-derived coronary blood flow in perfusion CT and CCTA.

From: Non-invasive coronary physiology based on computational analysis of intracoronary transluminal attenuation gradient

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

  1. *Not all RCA was available (n = 14) because the Z-axis coverage of perfusion imaging was 73 mm.
  2. **Hypoplastic vessels (n = 7) were not included.
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