Table 2.

CT_FFR analysis results in both reconstructions.

				Standard			ZeeFree
Patient number (n=20)	Segment number (n=45)	Artery and AHA segment with artifact	Artifact grade*	CTFFR feasibility	CTFFRvalue	Artifact grade*	CTFFR feasibility	CTFFRvalue
1	1	RCA 1	3	yes	0.99	1	yes	0.99
	2	LAD 8	3	yes	0.95	1	yes	0.94
	3	CX 13	2	yes	0.99	2	yes	0.97
2	4	LAD 8	2	yes	0.93	1	yes	0.92
	5	CX 13	2	yes	0.97	1	yes	0.97
3	6	RCA 2	3	yes	0.99	1	yes	0.99
	7	RCA 3	2	yes	0.99	1	yes	0.98
4	8	RCA 3	3	yes	0.98	1	yes	0.98
	9	LAD 8	2	yes	0.92	1	yes	0.92
	10	CX 12	2	yes	0.95	1	yes	0.97
5	11	RCA 2	3	yes	0.98	2	yes	0.98
	12	RCA 3	3	yes	0.96	2	yes	0.96
	13	LAD 7	2	yes	0.97	1	yes	0.97
	14	LAD 8	3	yes	0.94	2	yes	0.96
6	15	RCA 1	2	yes	0.99	1	yes	0.99
	16	LAD 6	3	yes	0.42	2	yes	0.98
	17	LAD 7	2	yes	0.15	1	yes	0.82
	18	CX 11	3	yes	1	2	yes	0.99
7	19	RCA 4	2	yes	0.83	1	yes	0.82
8	20	RCA 2	3	yes	0.99	2	yes	0.99
	21	CX 13	2	yes	0.97	2	yes	0.95
9	22	LAD 8	2	yes	0.94	1	yes	0.95
10	23	RCA 2	3	yes	0.98	1	yes	0.99
	24	RCA 3	3	yes	0.98	1	yes	0.98
	25	LAD 8	2	yes	0.92	1	yes	0.94
11	26	CX 12	2	yes	0.98	1	yes	0.99
12	27	RCA 3	2	yes	0.97	1	yes	0.99
	28	LAD 8	4	NF	NF	4	yes	0.4
13	29	RCA 1	2	yes	1	1	yes	0.99
	30	LAD 7	3	yes	0.75	1	yes	0.95
	31	LAD 8	2	yes	0.56	1	yes	0.91
	32	CX 11	4	yes	0.91	1	yes	0.99
14	33	RCA 2	2	yes	0.96	1	yes	0.98
15	34	LAD 7	4	yes	0.94	1	yes	0.98
16	35	RCA 2	2	yes	0.99	1	yes	0.97
17	36	RCA 2	2	yes	0.99	1	yes	0.99
18	37	LAD 7	4	yes	0.77	1	yes	0.80
	38	LAD 8	4	yes	0.79	1	yes	0.80
	39	CX 12	4	NF	NF	1	yes	0.92
	40	CX 13	4	NF	NF	1	yes	0.87
19	41	RCA 2	3	Yes	0.98	1	yes	0.96
	42	LAD 6	4	Yes	0.52	2	yes	0.99
	43	LAD 7	4	Yes	0.46	1	yes	0.85
	44	CX 12	3	Yes	0.43	1	yes	0.98
20	45	RCA 1	2	Yes	0.98	1	yes	0.99

CTFFR=computed tomography fractional flow reserve; NF=not feasible;

^*stair-step artifacts were graded from 1 to 4 (1=minimal, 2=mild, 3=moderate, 4=severe).