目的评价ＳＰＥＣＴ骨显像技术观察下颌移植骨成活的价值。方法分别于１、２、４和８周，对３０例骨移植病人行９９Ｔｃｍ亚甲基二膦酸盐骨显像及半定量动态观察。结果３０例移植骨均成活；２７例放射性摄取第１周增加，第２周最高，以后逐渐减少至正常；２例放射性摄取２周前减少，第４周增加，第８周正常；１例放射性摄取第１周减少，第２周增加，以后逐渐减少至正常。结论放射性核素骨显像能早期判断下颌移植骨的成活情况 Objective To evaluate the value of SPECT bone imaging in the survival of mandibular graft. Methods 99Tcmmethodiphosphonate bone scintigraphy and semiquantitative dynamic observation of 30 bone graft patients were performed at 1, 2, 4 and 8 weeks respectively. Results All the bone grafts survived in 30 patients. The radioactivity uptake increased in the first week, the highest in the second week, and then gradually decreased to normal. The radioactivity uptake decreased in two cases two weeks ago, increased in the fourth week and normal in the eighth week, The first week of ingestion decreased, the second week increased, and then gradually decreased to normal. Conclusion Radionuclide bone imaging can early determine the survival of mandibular graft