【摘要】 <正> 钡剂灌肠(下称钡灌),对诊断乙状结肠以上的结肠腔内肿物,起着重要作用。但“钡灌”前需有一系列较复杂的准备,“钡灌”时藉流体水压进入结肠,为了配合检查,常要求病人尽量耐住,而使整个结肠充盈,此时结肠腔径被充满拉长,若腔内肿物小于肠腔,或自其一侧壁生长的早期病变,尤其来自前或后壁的肿物,在仰卧位检查,常被钡剂遮住其一部或全部,更多还原

【Abstract】 "The impediment of colonicconstriction" is a useful roentgen sign in the detection of colonic masses; a preliminary investigation of its physiopathologic mechanism is discussed.This procedure is easily performed by radiologist.更多还原