PET／CT确定食管癌大体靶区的研究进展

The development of PET/CT in determining gross tumor target volume of esophageal carcinoma in precise radiotherapy

随着功能影像及分子影像的发展，PET／CT逐渐成为辅助制定肿瘤最佳精确放疗计划的成像方式。许多研究支持18F-FDGPET／CT用于精确放疗中食管癌的靶区勾画，然而18F-FDGPET／CT在食管癌靶区勾画中的有效性尚需进一步研究。该文主要对18F—FDGPET／CT用于食管癌原发病灶、区域转移淋巴结GTV勾画的应用价值及有效性等方面的研究进行综述。

As the development of functional and molecular imaging, PET/CT gradually becomes one of methods in optimizing cancer radiotherapy treatment planning. Currently, numerous hospitals routinely use ISF-FDG PET/CT for the delineation of target volume in esophageal carcinoma （EC）. However, the va lidity of ISF-FDG PET/CT in the delineation of target volume for EC is limited and needs further clinical val idation. This review focuses on the value and validity of ISF-FDG PET/CT in the delineation of gross tumor target volume of EC primary lesions and regional lymph nodes.