Comparison of Instantaneous Wave-Free Ratio (iFR) and Fractional Flow Reserve (FFR) with respect to Their Sensitivities to Cardiovascular Factors: A Computational Model-Based Study

Table 1

Comparisons of model simulations and in vivo measurements in terms of main systemic and coronary hemodynamic variables.

	Resting		Hyperemic
	In vivo measurement	Simulation	In vivo measurement	Simulation
QLAD (mL/min)	76.15 ± 33.41 [24]	86.60	256.15 ± 110.84 [24]	264.91
QLCx (mL/min)	54.62 ± 24.59 [24]	64.40	163.85 ± 67.18 [24]	171.26
QRCA (mL/min)	68.46 ± 31.87 [24]	72.00	217.69 ± 76.70 [24]	232.54
Pas (mmHg)	113.0 ± 5.0 [23]	121.30	113.00 ± 6.0 [23]	111.68
Pad (mmHg)	74.0 ± 8.0 [23]	79.70	70.00 ± 5.0 [23]	74.93
CO (L/min)	5.19 ± 0.83 [23]	5.14	7.6 ± 1.19 [23]	7.49

Q, mean flow rate over a cardiac cycle; , aortic systolic/diastolic pressure; CO, cardiac output.