Table 7.
Dose statistics of the CTV and PTV at 33 institutions
| CTV | D95 (%) | Mean dose (%) | Maximum dose (%) | |
|---|---|---|---|---|
| Minimum | 92.5 | 98.3 | 101.6 | |
| Maximum | 104.6 | 105.7 | 115.0 | |
| Mean | 99.2 | 101.8 | 105.6 | |
| PTV | D95 (%) | Mean dose (%) | Maximum dose (%) | V90 (%) |
| Minimum | 77.0 | 97.4 | 101.6 | 89.0 |
| Maximum | 101.6 | 104.8 | 116.0 | 101.1 |
| Mean | 95.2 | 100.8 | 106.1 | 98.6 |
CTV, clinical target volume; PTV, planning target volume; D95, the percentage of the prescribed dose covering 95% of the volume; V90, the percentage of the volume covered by 90% of the prescribed dose.