钡灌肠X线检查至今仍为诊断结肠疾病的标准筛选法,它特别能发现恶性或恶化前疾病。在美国,每年作钡灌肠X线检查至少600万次,据估计,当初次钡灌肠检查时,由于误认为粪便,至少有20%结肠癌漏诊。其结果,鼓吹各种清洁肠道的技术如风起云涌。本实验旨在评价规定饮食的效果。在本实验之前,作者先进行准备性研究。38名非选择性门诊病人参加,病人进低渣饮食,钡灌肠前夜只喝清水。泻药包括灌肠前夜服4片bisacodyl(译 Barium enema X-ray examination is still the standard screening method for the diagnosis of colon disease, it can be found especially in malignant or pre-malignant disease. In the United States, annual barium enema X-ray examination at least 6 million times, it is estimated that when the first barium enema examination, due to mistaken for stool, at least 20% of missed diagnosis of colon cancer. As a result, various technologies to clean the intestine have been promoted. The purpose of this experiment is to evaluate the effect of a diet. Prior to this experiment, the author first conducted a preparatory study. 38 non-selective out-patient patients to participate in the patient into the low-residue diet, barium enema only drink water overnight. Laxatives include four bisacodyl enemas in the eve of night