结肠双重造影法沿用已久,能显示较小的隐匿性结肠病变,有助于结肠病变的早期发现。目前已为国内外学者所重视,并已广泛应用于临床。但是,由于肠管迂曲多变,肠管是否清洁、灌肠的操作技巧以及灌肠器和X线机性能等多种因素可以影响检查效果,要获得成功并不容易。为此,我们自1978年底开始注意了各种因素对结肠双重造影效果的影响。 Colonic double contrast has long been used, can show smaller occult colonic lesions, contribute to the early detection of colonic lesions. At present, attention has been paid to domestic and foreign scholars and has been widely used in clinical practice. However, due to tortuous bowel changes, intestinal cleanliness, enema operating skills and appliances and X-ray machine performance and other factors can affect the inspection results, to be successful is not easy. To this end, we have paid attention since the end of 1978 to various factors on the effect of colon double contrast.