Abbreviations: GTV, gross tumor volume; HR-CTV, high risk clinical target volume; IR-CTV, intermediate risk CTV; SD, standard deviation; D100, 100% volume in contouring target receiving the prescription dose; D90, 90% volume in contouring target receiving the prescription dose; V100, percentage volume of contouring target cover by 100Gy isodose curve; D0.1CC, the maximum dose of 0.1 cc in contouring target; D1CC, the maximum dose of 1 cc in contouring target; D2CC, the maximum dose of 2 cc in contouring target;
a EQD2α/β=10; bEQD2α/β=3