核素血池显像定位诊断肠道出血的临床价值

Clinical evaluation of ￣(99) Tc￣m-RBC imaging for localization of intesti-nal hemorrhage

目的：证实￣（９９）锝￣ｍ体内标记红细胞（￣（９９）Ｔｃ￣ｍ－ＲＢＣ）显像具有定位诊断肠道出血的临床应用价值，方法：采用￣（９９）Ｔｃ￣ｍ－ＲＢＣ法对２１例肠道出血患者进行血池显像。结果：１６例腹部有异常放射性浓聚，其中１４例正确显示了出血部位，被手术（５例）、选择性血管造影（３例）及纤维内窥镜（６例）证实，其灵敏度、特异性及准确率分别为８８．９％，１００％及８７．５％。结论：￣（９９）Ｔｃ￣ｍ－ＲＢＣ显像具有灵敏、简便、无创伤、定位准确等优点，可用于诊断和定位肠道出血。

Objective:To verify clinical value of￣(99)Tc￣m-RBC imaging for intestinal hemorrhage localization.Metbods:In vivo labelled ￣(99) Tc￣m-RBC imaging was performed in 21 patients with intestinal hemorrhage. Re-sults:Sixteen patients had positive imaging,of whom 14 showed correct bleeding site.They were confirmedby afterward surgery(5 cases),angiography(3 cases)and endoscopy (6 cases).The sensitivity,specificityand accuracy were 88.9%,100%and 87.5%respectively.Conclusion:The results suggested￣(99) Tc￣m-RBCimaging is an efficient, simple,safe and accurate method for localization of intestinal hemorrhage.