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临床上对不明原因的下消化道出血 ,特别是慢性下消化道出血的定位诊断比较困难。９９ｍ锝 -红细胞 (９９ｍＴｃ -ＲＢＣ)显像是一种很敏感的肠道出血的检查方法［１～３］。我们对２３例不明原因的下消化道出血患者 ,进行了 ９９ｍＴｃ -ＲＢＣ(体内标记法 )显像 ,以探讨其在下
Clinical diagnosis of unexplained lower gastrointestinal bleeding, especially chronic lower gastrointestinal bleeding more difficult to diagnose. 99m Tc-RBC imaging is a sensitive method of detecting intestinal bleeding [1-3]. We performed 99mTc-RBC (In Vivo Imaging) imaging of 23 patients with unexplained lower gastrointestinal bleeding to investigate their role in the next