宫颈癌是仅次于乳腺癌的最常见妇科恶性肿瘤之一,每年全球大约有40万宫颈癌新发病例,占所有肿瘤的10%左右,占女性新发病例的15%[1]。我国每年有新发宫颈癌病例约10万,且呈现出年轻病例逐年增加的趋势[2]。宫颈癌传统的体外放射治疗常规采用全野照射,放射剂量高,对其他器官损伤大,严重影响了疗效和患者的生活质 Cervical cancer is one of the most common gynecological malignancies after breast cancer. About 400,000 new cases of cervical cancer occur in the world each year, accounting for about 10% of all cancers and accounting for 15% of newly diagnosed cases of women [1]. There are about 100,000 new cases of cervical cancer each year in our country, and there is a trend of increasing young cases year by year [2]. Conventional in vitro radiotherapy of cervical cancer using the whole country exposure, high radiation dose, damage to other organs, has seriously affected the efficacy and quality of life of patients