乏氧是肿瘤的普遍现象,乏氧显像技术能够检测到肿瘤的乏氧状态,不仅对肿瘤进行诊断和鉴别诊断,对疗效做出预测,还可以根据肿瘤病灶的乏氧程度,制定个体化的治疗方案。这对在放疗中制定肿瘤生物靶区并进行适形、调强和精细放射治疗、使肿瘤放射治疗达到精确的生物靶区而非解剖靶区、提高放疗的精确性和最大限度地杀伤肿瘤细胞以及保护正常组织等均具有重要临床意义。 Hypoxia is a common phenomenon in tumors. Hypoxic imaging can detect the hypoxic state of the tumor. It not only makes the diagnosis and differential diagnosis of the tumor, but also predicts the curative effect. It can also make the individualized according to the degree of hypoxia of the tumor focus Treatment program. This is in the development of radiotherapy in tumor target areas and conformal, intensity modulated and fine radiotherapy, tumor radiotherapy to achieve accurate target rather than anatomical biological target area, to improve the accuracy of radiotherapy and maximize the killing of tumor cells As well as the protection of normal tissue, etc. have important clinical significance.