Abstract
放射性肺损伤已成为肺癌患者放疗剂量提升的重要限制因素，特别是对于合并慢性阻塞性肺疾病、重度吸烟等导致肺功能减损的患者。依据单光子发射计算机断层扫描肺灌注显像（single photon emission computed tomography—lungperfusion images，SPECT—LPI）优化放疗计划，
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