Table 1.
Inter‐fraction motion and deformation of normal tissues described over all patients and all axial T2 images.
| Normal tissue | 3D mean DTA | 3D mean COM | 3D mean DVF | DSC | ||||
|---|---|---|---|---|---|---|---|---|
| mean ± SD (mm) | Frequency > 5 mm (%) | mean ± SD (mm) | Frequency > 5 mm (%) | mean ± SD (mm) | Frequency > 5 mm (%) | Mean volume deforming > 5 mm (%) | mean ± SD | |
| Liver | 3.1 ± 1.2 | 8 | 4.7 ± 2.6 | 38 | 5.8 ± 2.3 | 53 | 49 ± 29 | 0.91 ± 0.04 |
| Stomach | 7.6 ± 3.9 | 65 | 11.9 ± 6.4 | 90 | 13.4 ± 6.4 | 100 | 87 ± 14 | 0.63 ± 0.16 |
| Duodenum | 4.5 ± 2.6 | 28 | 9.9 ± 6.2 | 73 | 9.6 ± 5.8 | 75 | 74 ± 31 | 0.52 ± 0.19 |
| Pancreas | 4.4 ± 2.3 | 25 | 9.2 ± 5.8 | 83 | 8.7 ± 4.7 | 83 | 69 ± 29 | 0.56 ± 0.16 |
| Right Kidney | 2.6 ± 1.3 | 8 | 5.0 ± 3.5 | 28 | 5.1 ± 2.9 | 35 | 41 ± 36 | 0.86 ± 0.06 |
| Left Kidney | 2.7 ± 1.6 | 10 | 5.2 ± 4.1 | 33 | 5.6 ± 3.7 | 40 | 43 ± 39 | 0.84 ± 0.10 |
| Spleen | 3.7 ± 2.7 | 23 | 8.4 ± 7.8 | 60 | 9.0 ± 7.5 | 63 | 62 ± 39 | 0.78 ± 0.16 |
| Spinal canal | 1.6 ± 0.9 | 0 | 7.0 ± 4.9 | 55 | 5.7 ± 4.5 | 40 | 39 ± 44 | 0.79 ± 0.10 |
Abbreviations: COM = center of mass; DSC = Dice similarity coefficient; DTA = distance to agreement; DVF = deformation vector field; SD = standard deviation.