| BEFORE the corrections for artifacts (60Co beam) | ||||||||
| Depth 1 |
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| ||||||
| Thickness (mm) | Measured dose for a field size (cGy) | % deviation between measured and calculated | ||||||
| 7 × 7 cm2 | 10 × 10 cm2 | 15 × 15 cm2 | 7 × 7 cm2 | 10 × 10 cm2 | 15 × 15 cm2 | |||
| 0 | 199.630 | 200.000 | 200.530 | −0.18 | 0.00 | 0.26 | ||
| 4 | 207.270 | 207.460 | 207.060 | 3.64 | 3.73 | 3.53 | ||
| 8 | 207.330 | 209.040 | 208.130 | 3.66 | 4.52 | 4.06 | ||
| 12 | 204.910 | 206.280 | 205.890 | 2.45 | 3.14 | 2.94 | ||
| 8 (air gap) | 212.980 | 212.700 | 209.920 | 6.49 | 6.35 | 4.96 | ||
| Depth 2 |
|
| ||||||
| Thickness (mm) | Measured dose for a field size (cGy) | % deviation between measured and calculated | ||||||
| 7 × 7 cm2 | 10 × 10 cm2 | 15 × 15 cm2 | 7 × 7 cm2 | 10 × 10 cm2 | 15 × 15 cm2 | |||
| 0 | 199.630 | 200.000 | 200.530 | −0.18 | 0.00 | 0.26 | ||
| 4 | 204.090 | 204.800 | 204.790 | 2.04 | 2.40 | 2.40 | ||
| 8 | 205.250 | 206.680 | 206.700 | 2.62 | 3.34 | 3.35 | ||
| 12 | 199.020 | 201.420 | 201.470 | −0.49 | 0.71 | 0.74 | ||
| 8 (air gap) | 205.350 | 206.270 | 206.450 | 2.68 | 3.13 | 3.23 | ||