Table 1.
Comparison between the planned and measured dose in the TomoTherapy cheese phantom using the original image value to density table (IVDT) created following the vendor's recommendations.
| Plan number | Delivery mode | Jaw wide/mode | Dplan (Gy) | Dmeasure (Gy) | Δ (%) |
|---|---|---|---|---|---|
| 1 | Helical | 1.0 Fix | 2.026 | 2.021 | −0.26 |
| 2 | Helical | 2.5 Fix | 2.024 | 2.016 | −0.41 |
| 3 | Helical | 5.0 Fix | 2.023 | 2.030 | 0.35 |
| 4 | Helical | 2.5 Dyn | 2.027 | 2.034 | 0.35 |
| 5 | Helical | 5.0 Dyn | 2.022 | 2.029 | 0.35 |
| 6 | Direct | 1.0 Fix | 2.023 | 1.971 | −2.56 |
| 7 | Direct | 2.5 Fix | 2.022 | 1.990 | −1.59 |
| 8 | Direct | 5.0 Fix | 2.022 | 2.016 | −0.32 |
| 9 | Direct | 2.5 Dyn | 2.038 | 2.040 | 0.12 |
| 10 | Direct | 5.0 Dyn | 2.025 | 2.022 | −0.16 |
| Mean ± SD | — | — | — | — | −0.41 ± 0.95 |