Valette M, Le Cudonnec B
J Radiol. 1982 Apr;63(4):287-90.
For differential diagnosis between obstruction of the lower organ and paralytic ileus, an additional projection to the customary A.S.P. plates is proposed: profile of the rectosigmoid in left lateral decubitus with vertical rays, designed to back up the differential reasoning behind the presence or absence of a rectosigmoid distended by gas.
为了鉴别下消化道梗阻与麻痹性肠梗阻，建议在常规前后位投照片之外增加一项投照：左侧卧位时，垂直射线投照的直肠乙状结肠侧位片，用于辅助判断直肠乙状结肠是否存在气体扩张的鉴别诊断依据。
