Table 4.
Independent absolute dosimetry results from the three treatment rooms at MPRI. TR1 is passive scattering; TR2 and TR3, continuous uniform scanning. The dose deliveries followed the ICRU 59 protocol. The RPC results have been converted for comparison from dose in muscle to dose in water (about a 1% difference based on density and stopping power at the relevant average energy). Comparison is also provided to IAEA TRS-398 equivalencies.
| Treatment room | Detector type | ICRU 59 delivered dose (cGy) | Reported dose (cGy) | ICRU 59∕ reported | IAEA TRS-398∕ reported | Reported uncertainty (%) | Confidence interval (%) |
|---|---|---|---|---|---|---|---|
| TR1 | TLD | 299 | 302 | 0.99 | 0.97 | 5 | 90 |
| TR2 | TLD | 298 | 301 | 0.99 | 0.97 | 5 | 90 |
| TR2 | Alanine | 25 000 | 24 100 | 1.02 | 1.04 | 3.5 | 95 |
| TR3 | TLD | 299 | 308 | 0.97 | 0.95 | 5 | 90 |