高浓度、细颗粒硫酸钡结肠双重造影,能显示结肠内在的细微结构,对结肠的早期癌肿、息肉及溃疡性结肠炎等疾患的及时发现具有较高的价值。据国内外文献报道,该法造影中钡剂用量普遍较多(约200～300ml)。肠内残留钡剂常有重叠或遮盖现象,使部分结肠细微结构及细小病变难以显示。我们采用小剂量高浓度钡液结肠双重造影 High-concentration, fine-grained barium sulfate colon double contrast can show the inner structure of the colon, early colon cancer, polyps and ulcerative colitis and other diseases found in time with high value. According to domestic and foreign literature, the method of contrast barium dosage generally more (about 200 ~ 300ml). Intestinal residual barium often overlap or cover the phenomenon, so that part of the fine structure of the colon and small lesions difficult to show. We use low-dose high-concentration barium colon double contrast