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口服硫酸钡胶浆剂是放射科作胃肠道造影时最常用的造影剂。国内常用浓度在50～70%w/v(本文中百分浓度均按 w/v 计算)之间。近年来国外大都采用高浓度(100～200%)、低粘度(最低15～20厘泊)的钡胶浆。这种钡剂能增加胃肠道 X 线检查时的对比度,有利于显示粘膜纹及细小病变,如点状、线状溃疡,早期胃癌的小充盈缺损、小的癌溃疡及粘膜纹改变。在用高浓度、低粘度钡剂作气-钡双重对比造影时,X 线对胃肠病变的发现率及诊断正确率都能大大提高。我们已试制成这种钡剂,使用结果满意。这种钡胶浆除具有浓度高、粘度低、颗粒细的特点外,并有迂稀盐酸(0.15N)不发生絮凝、贮存中不粘瓶、不结块、表面不结膜等优点。
Oral barium sulfate mucilage is the most commonly used contrast agent for radiology for gastrointestinal imaging. Commonly used in the domestic concentration of 50 ~ 70% w / v (in this paper, the percentage by w / v calculated) between. In recent years, foreign countries mostly use high concentration (100-200%), low viscosity (15-20 centipoise minimum) barium mortar. This barium can increase the contrast of gastrointestinal X-ray examination is conducive to show mucosal patterns and small lesions, such as punctate, linear ulcers, small filling defects of early gastric cancer, small cancer ulcers and mucosal changes. In the use of high concentration, low viscosity barium for gas-barium double contrast angiography, X-ray detection of gastrointestinal lesions and diagnostic accuracy can be greatly improved. We have trial-produced this barium, with satisfactory results. In addition to the barium mortar with high concentration, low viscosity, fine particle characteristics, and a narco hydrochloric acid (0.15N) flocculation does not occur during storage, non-stick bottle, no caking, the surface is not the advantages of the conjunctiva.