放射治疗(简称放疗)(Radiation therapy,RT)是肺癌等胸部恶性肿瘤的重要治疗方法之一。而放射性肺损伤的发生常常不可避免,这也是剂量限制的原因所在。现综述放射性肺损伤研究进展。1放射性肺损伤的发生机制放射性肺损伤可破坏肺功能,包括气体交换能力、最适通气血流比等。例如 Radiation therapy (Radiation therapy, RT) is one of the important treatments for chest cancer such as lung cancer. The incidence of radiation-induced lung injury is often unavoidable, which is why dose limiting is the reason. The progress of research on radiation-induced lung injury is reviewed. A mechanism of radiation-induced lung injury Radiation-induced lung injury can damage lung function, including gas exchange capacity, the optimal ventilation and blood flow ratio. E.g