Structure | Dose-volume planning objective |
---|---|
PTV65 (65 Gy prescribed in 30 fractions); | 99% volume more than 90% of the dose (D99% > 90%) 98% volume more than 95% of the dose (D98% > 95%) 50% volume equal to 100% of the dose (D50% = 100%) 5% volume less than 105% of the dose (D5% < 105%) 2% volume less than 107% of the dose (D2% < 107%) |
PTV54 (54 Gy prescribed in 30 fractions); | 99% volume more than 90% of the dose (D99% > 90%) 98% volume more than 95% of the dose (D98% > 95%) 50% volume equal to 100% of the dose (D50% = 100%) 5% volume less than 117% of the dose (D5% < 117%) 2% volume less than 122% of the dose (D5% < 122%) |
PRV Spinal Cord | 1% of volume less than 44 Gy; (D1% < 44 Gy) Dmax less than 48 Gy |
PRV Brainstem | 1% of volume less than 48 Gy (D1% < 48 Gy) |
Ipsi-lateral Parotid | As low as reasonably practicable |
Contra-lateral Parotid | Dmean less than 24 Gy |
Larynx | Dmean less than 40 Gy |