Table 3 Modeling of the BrainLAB imaging couch top (ICT) in the Philips Pinnacle 3 treatment planning system using different combinations of carbon fibers (CF) and foam densities (F) for 5 cm × 5 cm field size
Pinnacle3 treatment planning system predicted dose (cGy) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Angle | Measured Dose (cGy) | No Couch | CF0.6 | CF0.5 | CF0.46, | CF0.46 | CF0.6 | CF0.55 | CF0.7 |
F0.02 | F0.03 | F0.5 | F0.1 | F0.1 | F0.03 | F0.1 | |||
180 | 81.2 | 82.7 | 80.4 | 81.1 | 80.6 | 79.7 | 78.8 | 80.8 | 78.6 |
170 | 80.8 | 82.3 | 80 | 80.6 | 80.1 | 79.3 | 78.4 | 80.3 | 78.1 |
160 | 79.7 | 81.4 | 78.9 | 79.6 | 79 | 78.2 | 77.3 | 79.2 | 77 |
150 | 77.5 | 79.6 | 77.2 | 77.9 | 77.3 | 76.3 | 75.4 | 77.6 | 75.1 |
140 | 74.0 | 76.7 | 73.7 | 74.5 | 73.9 | 72.8 | 71.7 | 74.1 | 71.4 |
130 | 68.3 | 71.9 | 68.4 | 69.2 | 68.5 | 67.4 | 66.2 | 68.8 | 65.8 |
120 | 59.2 | 63.9 | 59.9 | 60.8 | 60 | 58.7 | 57.4 | 60.3 | 57 |
110 | 50.0 | 53.3 | 49.4 | 50.3 | 50 | 49.4 | 48.2 | 49.8 | 47.8 |
100 | 56.0 | 55.4 | 55.4 | 55.4 | 55.4 | 55.4 | 55.4 | 55.4 | 55.4 |