Lavelle M I, Venables C W, Douglas A P, Thompson M H, Owen J P, Hacking P M
Clin Radiol. 1977 Nov;28(6):625-7. doi: 10.1016/s0009-9260(77)80040-8.
The study compares the ability of a simple double contrast technique with our standard single contrast barium meal to diagnose peptic ulceration. Two hundred and six patients were randomly allocated to either examination. Endoscopy was used as the definitive diagnostic procedure. Deformity of the duodenal cap was more accurately detected by the double contrast technique (P less than 0.01). There was no significant difference in the detection rates for duodenal ulcer. False positive or false negative diagnoses of duodenal pathology were similar by both techniques. The incidence of gastric ulceration in the series was too low for statistical analysis.
该研究比较了一种简单的双重对比技术与我们标准的单对比钡餐检查诊断消化性溃疡的能力。206例患者被随机分配接受其中一种检查。内镜检查被用作确定性诊断方法。双重对比技术能更准确地检测出十二指肠球部畸形（P小于0.01）。十二指肠溃疡的检出率没有显著差异。两种技术对十二指肠病变的假阳性或假阴性诊断相似。该系列中胃溃疡的发生率过低，无法进行统计分析。
