Table 5

Per-Vessel FFRCT Test Outcome According to Coronary Stenosis Severity

True PositiveFalse PositiveTrue NegativeFalse Negative
Coronary stenosis severity
 30%–50%4 (22)3 (17)10 (56)1 (6)
 51%–70%15 (56)8 (30)2 (7)2 (7)
 71%–90%5 (63)2 (25)1 (13)0
FFRCT0.74 (0.69–0.78; 0.65–0.80)0.78 (0.76–0.80; 0.74–0.80)0.88 (0.84–0.88; 0.81–0.90)0.81 (0.81–0.83)

Values are n (%) or median (IQR; range). FFRCT ≤0.80 was diagnostic of ischemia. Reference standard was fractional flow reserve ≤0.80 (n = 51).

Abbreviations as in Tables 1 and 2.

  • Instantaneous wave-free ratio ≤0.90 (n = 2) was used as reference.

  • Range (IQR) not shown because of low number of observations.