de Roos A, Hermans J, Shaw P C, Kroon H
Radiology. 1985 Jan;154(1):11-3. doi: 10.1148/radiology.154.1.3964926.
Single-contrast (SC) and double-contrast (DC) colon examinations were compared in 425 consecutive patients for detection of polyps and stricturing carcinomas. Each patient was examined with both SC and DC during the same session. In patients with carcinoma, there was no significant difference between the two modalities. DC was far superior to SC for detection of rectal or colonic polyps (p less than 0.05); however, the techniques appeared to be complementary in the sigmoid and cecum. The authors conclude that DC is superior to SC as a means of screening for polyps of the rectum and colon, with SC being useful as an adjunct in problem areas such as the sigmoid and cecum.
对425例连续患者进行了单对比（SC）和双对比（DC）结肠检查，以检测息肉和狭窄性癌。每位患者在同一次检查中同时接受了SC和DC检查。在患有癌症的患者中，两种检查方式之间没有显著差异。DC在检测直肠或结肠息肉方面远优于SC（p<0.05）；然而，在乙状结肠和盲肠，这两种技术似乎具有互补性。作者得出结论，作为直肠和结肠息肉的筛查手段，DC优于SC，而SC在乙状结肠和盲肠等问题区域作为辅助手段很有用。
