利用放射性核素显像分析肺栓塞病因

A Causal Analysis of Pulmonary Embolism Using Radionuclide Imaging

目的：探讨肺栓塞（ＰＥ）患者肺内栓子来源以及下肢静脉病变及其他诱因与 ＰＥ发病之间的关系。材料和方法：对９３例临床高度怀疑肺栓塞／下肢静脉病变的患者，应用^（９ｍ）ＴｃＭＡＡ和^（９９ｍ）Ｔｃ－ＧＰ，进行肺灌注．通气显像及^（９９ｍ）Ｔｃ－ＭＡＡ下肢静脉显像。结果：肺灌注．通气显像显示８６例患者为多发性肺栓塞，７例患者肺灌注－通气显像正常； ＰＥ组中，６１例有下肢深静脉病变，占 ７０．９％，其中由下肢髂、股静脉血栓引起的 ＰＥ者 ４６例，占 ＰＥ合并下肢静脉病变者的 ７５．４％。结论：放射性核素肺灌注．通气显像及下肢静脉显像的联合应用可明确ＰＥ及其病因诱因的诊断，从而减少临床ＰＥ的误漏诊率。

Purpose: To evaluate the relationship between deep venous thrombois (DVT) and pulmonary ebbolism (PE) with radionuclide imaging. Materals and Methods: 93 patients of highly suspected PE, with or without lower extremity venous thrombosis, undervent pulmonary perfusion/ventilation imaging and lower extremity venous imaging with ^(99m)Tc-MAA and ^(99m)Tc-Gp. Results: 86 patients were diagnosed PE because of the mismatch of their lung per fusion and ventilation images, 7 were normal. Among 86 PE cases, 61 were complicated with lower extremity venous disorders (70.9% ), of them, obstructions above femoral vein were found in 46 cased (75.4 % ). Conclusion: It is effective to diagnose PE and its causes with combinatin of pulmonary perfusion/ventilation imaging and lower extremity venous imaging.