Dosimetric comparison of IMRT plans with different beam arrangements for the treatment of recurrent cervical cancer
Objective To compare the dosimetric difference in planning target volumn and organ at risk(OAR) between intensity modulated radiation therapy(IMRT) plans with different beam arrangements. Methods Ten patients with recurrent cervical cancer were included in the study. For each patient, three IMRT treatment plans with 5,7and 9 beam fields were designed respectively. The target volume dose , conformal index(CI), homogeneity index(HI), and the dose and volume radiated of the OAR were compared. Results There was no significant differences among the IMRT plans in target volume dose, CI, HI. The dose and volumes of OAR among the IMRT plans were no significantly different. Conclusion In the dose distribution of target and the protection of normal structures, there was no obvious advantage among the 5-field IMRT, 7-field IMRT and 9-field IMRT plans in treating recurrent cervical cancer.
NETL
NSTL
万方数据
维普
