SPECT-Based DPM Results of Mean Absorbed Dose for Targets in Voxel Phantom with HE Collimator and UHE Collimator
| Target | True dose (cGy) | SPECT-derived mean dose (cGy) | Relative SD (%) | Error (%) | ||||
|---|---|---|---|---|---|---|---|---|
| HE collimator | ||||||||
| 7-mL tumor | 1,309 | 851 | 7.2 | 35 | ||||
| 16-mL tumor | 1,345 | 1,264 | 3.0 | 6 | ||||
| 59-mL tumor | 1,450 | 1,431 | 1.9 | 1 | ||||
| 135-mL tumor | 1,458 | 1,512 | 0.9 | −4 | ||||
| Liver | 500 | 560 | 0.4 | −12 | ||||
| Kidney | 1,160 | 1,128 | 0.6 | 3 | ||||
| Spleen | 813 | 859 | 0.7 | −6 | ||||
| UHE collimator | ||||||||
| 7-mL tumor | 1,309 | 898 | 7.9 | 31 | ||||
| 16-mL tumor | 1,345 | 1,274 | 1.9 | 5 | ||||
| 59-mL tumor | 1,450 | 1,357 | 1.0 | 6 | ||||
| 135-mL tumor | 1,458 | 1,493 | 0.8 | −2 | ||||
| Liver | 500 | 502 | 0.3 | 0 | ||||
| Kidney | 1,160 | 1,099 | 0.4 | 5 | ||||
| Spleen | 813 | 813 | 0.6 | 0 | ||||