uation of the small bowel is noninvasive but relatively insensitive, with a less than 6% yield from small bowel follow-through and a 10 to 21% yield from enteroclysis.Рinsensitive 感觉迟钝的 follow-through 持久的贯彻,持续 enteroclysis 小肠造影Р小肠X线检查是非侵入性的,但相对不灵敏,小肠全片6%不到有发现,小肠造影10~21%有结果。Рparison, the diagnostic yield of endoscopic enteroscopy of the small bowel in obscure gastrointestinal bleeding is 38 to 75%. (enteroscopy 肠镜检查)Р相比较,对来源不明性胃肠道出血小肠内窥镜的诊断结果是38~75%。РTraditional videoendoscopes can evaluate only the proximal small bowel (≤150cm), whereas longer scopes, which are passed though the entire small bowel and then withdrawn while visualizing the mucosa (sonde enteroscopy), are limited in their ability to visualize the entire mucosa and cannot be used to perform diagnostic or therapeutic maneuvers.