Table 2.

Comparison of four measurements of FFR (benchtop FFR, invasive FFR, patient CT-FFR, and phantom CT-FFR). Case #5 had an invasive iFR measurement (denoted *), which was converted to an FFR value. Percent stenosis measurements are included for comparison between the patients and phantoms.

	Stenosed vessel	Lesion length (mm)	Patient percent stenosis (%)	Phantom percent stenosis (%)	Benchtop FFR	Invasive FFR	Patient CT-FFR	Phantom CT-FFR
Case #1	LAD	25	$59.9\pm 10$	$53.2\pm 0.4$	0.76	0.76	0.77	0.72
Case #2	LAD	11.3	$47.2\pm 5$	$28.1\pm 7.2$	0.81	0.94	0.97	0.95
Case #3	LAD	18.6	$59.0\pm 12$	$56.3\pm 12$	0.92	0.90	0.94	0.90
	LCX	12.1	$62.3\pm 23$	$63.2\pm 12$	0.91	0.98	0.99	0.97
Case #4	LAD	15.8	$63.2\pm 10$	$50.7\pm 12$	0.73	0.76	0.78	0.81
Case #5	RCA	33.2	$66.3\pm 17$	$38.1\pm 10$	0.93	0.81*	0.92	0.87