Table 2.
Centre of mass distances between contours for different CT scans
Observer | Difference between CTs (cm) | CTV | Liver | L-kidney | R-kidney |
---|---|---|---|---|---|
A | 1–2 | 0.51 | 0.59 | 0.60 | 0.66 |
1–3 | 0.28 | 0.50 | 0.63 | 0.50 | |
2–3 | 0.40 | 0.43 | 0.68 | 0.60 | |
Mean | 0.40 | 0.51 | 0.64 | 0.59 | |
B | 1–2 | 0.28 | 0.54 | 0.62 | 0.66 |
1–3 | 0.31 | 0.40 | 0.57 | 0.46 | |
2–3 | 0.26 | 0.36 | 0.71 | 0.62 | |
Mean | 0.28 | 0.43 | 0.63 | 0.58 | |
C | 1–2 | 0.49 | 0.69 | 0.57 | 0.66 |
1–3 | 0.43 | 0.75 | 0.66 | 0.57 | |
2–3 | 0.52 | 0.68 | 0.67 | 0.60 | |
Mean | 0.48 | 0.71 | 0.63 | 0.61 | |
D | 1–2 | 0.46 | 0.72 | 0.63 | 0.72 |
1–3 | 0.42 | 0.47 | 0.68 | 0.63 | |
2–3 | 0.43 | 0.58 | 0.73 | 0.64 | |
Mean | 0.44 | 0.59 | 0.68 | 0.66 |
CTV, clinical tumour volume; L, left; R, right.