Table 2 Results of the TLD measurements and TPS calculations at the four positions in 3 mm depth (3.1 – 3.4) and 1 mm depth (O.1 – O.4) in Gy for the 4 MV and the 6 MV (without flab) treatment plan
From: Measurement of skin and target dose in post-mastectomy radiotherapy using 4 and 6 MV photon beams
Position | 4MV | 6MV | ||||
|---|---|---|---|---|---|---|
Measured dose ± error/Gy | Computed dose/Gy | Difference/% | Measured dose ± error/Gy | Computed dose/Gy | Difference/% | |
O.1 | 1.39 ± 0.03 | 1.41 | 1.4 | 1.23 ± 0.01 | 1.23 | 0.0 |
O.2 | 1.41 ± 0.03 | 1.38 | -2.1 | 1.16 ± 0.01 | 1.25 | 7.8 |
O.3 | 1.46 ± 0.03 | 1.42 | -2.7 | 1.35 ± 0.01 | 1.35 | 0.0 |
O.4 | 1.57 ± 0.02 | 1.55 | -1.3 | 1.30 ± 0.02 | 1.37 | 5.4 |
3.1 | 1.90 ± 0.04 | 1.87 | -1.6 | 1.73 ± 0.01 | 1.64 | -5.2 |
3.2 | 1.89 ± 0.03 | 1.88 | -0.5 | 1.78 ± 0.02 | 1.71 | -3.9 |
3.3 | 1.86 ± 0.05 | 1.88 | 1.1 | 1.81 ± 0.02 | 1.74 | -3.9 |
3.4 | 1.90 ± 0.06 | 1.95 | 2.6 | 1.74 ± 0.02 | 1.83 | 5.2 |