Table 3. Mean distance between ITV and transformed spinal cord d_SC(z) of different margin approaches for all patients.

patient	appr. 1	appr. 2	appr. 3
1	12.61	12.66	13.94
2	18.88	19.59	17.27
3	11.76	13.86	13.18
4	10.19	10.81	9.81
5	8.07	10.30	9.17
6	11.88	13.12	12.07
7	10.71	12.71	11.71
8	11.35	13.34	12.53
9	11.60	12.58	12.79
10	7.66	9.66	8.66
11	9.34	10.14	10.86
12	9.71	10.46	10.10
13	9.33	10.70	10.09
14	9.44	10.28	10.55
15	13.58	14.82	14.60
16	11.16	12.70	12.42
17	12.48	12.76	13.47
18	7.13	9.00	8.42
19	12.42	14.37	13.54
mean	11.02 100%	12.31 +11.7%	11.85 +7.5%