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目的：利用数字减影技术改善碘支气管造影影像及副作用。材料和方法：应用数字减影支气管造影（ＤＳＢ）技术共检查３５例患者，其中１９例选用７６％泛影葡胺磺胺混悬液，１２例用２０％泛影葡胺、４例用稀释的优维显（Ｕｌｔｒａｖｉｓｔ）做造影剂。结果：３５例ＤＳＢ影像均达优质，但用低浓度泛影葡胺病例的术中术后不良反应明显低于高浓度泛影葡胺。根据ＤＳＢ影像诊断支气管扩张１１例，支气管炎５例，支扩并支气管炎１５例、肺结核１例、支气管狭窄２例、正常１例。结论：ＤＳＢ技术可明显降低碘水的使用浓度，减少副反应，而且图像优良、易于实施。
Objective: To improve the imaging and side effects of iodine bronchography with digital subtraction. MATERIALS AND METHODS: Thirty-five patients were examined using digital subtraction bronchography (DSB), of which 19 were 76% diazepam, 12 with 20% diatrizoate, and 4 with diluted Ultravist (Ultravist) as a contrast agent. Results: All the 35 DSB images were of good quality. However, the postoperative adverse reactions of low concentration of meglumine diatrizoate were significantly lower than that of high concentration of diatrizoate. Bronchiectasis was diagnosed in 11 patients according to DSB images, bronchitis in 5, bronchiectasis in 15, bronchitis in 1, bronchial stenosis in 2, and normal in 1. Conclusion: DSB technology can significantly reduce the use of iodine concentration, reduce side effects, and the image is excellent and easy to implement.