Table 2.
Calibration factors for converting OSL readings to thimble chamber readings, together with the measuring conditions. For each exposure, the body bowtie filter was used, and the beam collimation was 20 mm at the iso-center.
| kVp | Bowtie | PMMA (cm) | HVL (mm Al) | Calibration factor | Std. error | R2 |
|---|---|---|---|---|---|---|
| 80 | Body | 4 | 6.0 | 1.14 | 0.0063 | 0.9998 |
| 100 | Body | 0 | 6.5 | 1.21 | 0.0098 | 0.9997 |
| 100 | Body | 2 | 6.9 | 1.24 | 0.0037 | 1.0000 |
| 100 | Body | 4 | 7.3 | 1.26 | 0.0090 | 0.9997 |
| 120 | Body | 0 | 7.5 | 1.34 | 0.0102 | 0.9997 |
| 120 | Body | 2 | 7.9 | 1.36 | 0.0086 | 0.9993 |