Theintensity-modulated radiation therapy of five radiotherapy fields on nasopharyngeal carcinoma

VernacularTitle:鼻咽癌五野调强放射治疗方案的实现
Author: Wei CHEN ; Hai HE
Publication Type:Journal Article
Keywords: nasopharyngeal neoplasms; radiotherapy,intensity-modulated; field schemes
From: Chongqing Medicine 2015;(31):4382-4385
CountryChina
Language:Chinese
Abstract: Objective Under the requirements of dose distribution in target and normal tissue ,five radiotherapy fields are de‐voted to making Intensity‐modulated radiation therapy (IMRT) plan ,thus the IMRT radiotherapy of Nasopharyngeal Carcinoma (NPC) could be underway with the radiotherapy field as few as possible .Methods Through the comparison of the NPC patients′IMRT plans in our hospital ,the angle of fields have been make out with 0° ,75° ,125° ,225°and 285° .At the same time ,this field scheme is compared with projects of front five fields ,behind five fields and share five fields .The result was statistically analyzed . Results In these four field schemes ,the maximum and minimum dose in the target area showed no statistically difference (P>0 . 05) ,while in the average dose ,D95 and normal tissue dose have statistical difference (P<0 .05) .Conclusion Comprehensive com‐parison of the dose distribution in the target and normal tissue in these four field schemes showed that the field scheme with the an‐gles of 0° ,75° ,125° ,225°and 285°could obtain better results ,so this field scheme should be more suitable for local area NPC patient′s IM RT .