肺癌已成为严重威胁人类健康的高发肿瘤。传统的影像学检查如X射线、CT、MRI等均以组织形态及结构改变为诊断基础,现代医学认为,肿瘤发生发展是经过表达异常、代谢及多种调控机制紊乱最终发展为形态结构的改变或出现临床症状,由此可知,无论临床分期的早晚,组织结构的改变实质上都是疾病发展的终末阶段。PET/CT作为一种集解剖显像与功能显像为一体的先进诊疗设备,自临床应用以来,其在恶性肿瘤,尤 Lung cancer has become a serious tumor that threatens human health. Traditional imaging studies such as X-ray, CT, MRI and so on are based on histological and structural changes for the diagnosis of the basis of modern medicine, tumor development is through abnormal expression, metabolism and a variety of regulatory disorders eventually developed into morphological changes Or clinical symptoms, we can see that, regardless of the clinical stage sooner or later, changes in tissue structure are essentially the terminal stage of disease development. PET / CT as a set of anatomical imaging and functional imaging as one of the advanced diagnosis and treatment equipment, since its clinical application, its malignancy, especially