Table 2.

Displacement of left anterior descending artery in three directions

Pt. No.	Mean displacement (mm)			Maximal displacement (mm)			Minimal displacement (mm)
	TPEF	LR	AP	TPEF	LR	AP	TPEF	LR	AP
1	0.8	1.0	0.6	2.7	3.6	2.9	0.0	0.0	0.0
2	1.8	1.8	1.4	5.7	5.7	8.2	0.0	0.0	0.1
3	2.2	1.4	3.2	10.0	5.6	9.1	0.0	0.0	0.7
4	2.3	2.2	1.5	9.6	8.0	9.3	0.0	0.0	0.0
5	3.7	3.8	2.7	11.2	11.7	10.5	0.0	0.0	0.0
6	1.2	1.0	1.2	3.3	4.2	3.5	0.0	0.0	0.0
7	3.8	4.4	1.7	9.0	10.1	10.9	0.1	0.0	0.0
8	2.3	3.9	3.2	6.4	15.5	7.0	0.0	0.1	0.0
9	1.1	2.2	1.4	3.3	8.2	6.9	0.0	0.0	0.0
10	1.7	2.0	1.7	4.2	3.9	6.5	0.1	0.0	0.0
11	3.9	3.0	2.8	9.0	6.0	7.7	0.0	0.0	0.0
12	2.0	2.4	2.2	5.1	6.3	4.9	0.0	0.0	0.0
13	1.6	2.6	2.1	4.5	6.0	10.9	0.1	0.0	0.0
14	3.5	6.8	4.1	13.7	12.6	14.8	0.0	2.2	0.0
15	3.8	2.5	6.5	9.2	4.9	9.9	0.9	0.0	4.2
16	1.3	1.6	1.5	4.7	4.2	7.7	0.0	0.0	0.0
17	2.8	2.5	2.6	13.4	8.4	10.5	0.0	0.0	0.0
18	1.7	2.9	1.4	4.3	7.4	5.2	0.3	0.7	0.0
19	2.1	2.4	2.4	8.4	5.6	9.1	0.0	0.0	0.0
20	2.0	1.4	2.0	9.5	4.9	9.1	0.0	0.0	0.0
Average	2.3	2.6	2.3	7.4	7.1	8.2	0.1	0.2	0.3
Minimum	0.8	1.0	0.6	2.7	3.6	2.9	0.0	0.0	0.0
Maximum	3.9	6.8	6.5	13.7	15.5	14.8	0.9	2.2	4.2
p
TPEF vs. LR .189				.701
TPEF vs. AP .964				.07
TPEF vs. AP .076				.037

Abbreviations: Pt. No. = patient number; TPEF = toward posterior edge of treatment fields; LR = left–right; AP = anteroposterior.