Table 1.
Summary of image data used in this study
| Treatment system |
Treatment site |
No. of planning CT datasets |
No. of daily image datasets |
Modality of daily on-line image |
Slice spacing of daily image |
kVp of daily image |
Pixel spacing of daily image |
|---|---|---|---|---|---|---|---|
| TomoTherapy | Head&neck | 2 | 3 | MV CT | 6 mm | 6000 | 0.75 mm |
| Prostate | 1 | 4 | MV CT | 6 mm | 6000 | 0.75 mm | |
|
| |||||||
| Elekta | Head&neck | 2 | 3 | kV CBCT | 1 mm | 100 | 1.00 mm |
| Prostate | 2 | 4 | kV CBCT | 1 mm | 120 | 1.00 mm | |
|
| |||||||
| Varian | Head&neck | 1 | 3 | kV CBCT | 2.5 mm | 100 | 0.49 mm |
| Prostate | 1 | 3 | kV CBCT | 2.5 mm | 125 | 0.78 mm | |