光动力疗法(Photodynamic Therapy,PDT)是用激光活化光敏药物治疗肿瘤等疾病的一种新方法。光敏药物进入机体后,用特定波长照射肿瘤部位,能使选择性聚集在肿瘤组织的光敏药物活化,引发光化学反应破坏肿瘤或其他病理性增生组织。光动力疗法主要通过三种作用机制来破坏肿瘤组织:(1)产生活性氧直接杀伤肿瘤细胞;(2)破坏病变部位血管 Photodynamic Therapy (PDT) is a new method of laser-activated photodynamic therapy for diseases such as oncology. Photosensitive drugs into the body, the specific wavelength of irradiation of tumor sites, can selectively gather in the tumor tissue photosensitive drug activation, triggering photochemical reactions destroy the tumor or other pathological proliferation of tissue. Photodynamic therapy mainly through three mechanisms of action to destroy tumor tissue: (1) the production of reactive oxygen species directly kill tumor cells; (2) the destruction of vascular lesions