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来自维基百科,自由的百科全书
造影剂也称为对比剂、显影剂,是一种X光无法穿透的药剂,用于让体内器官在X光检查时能看得更清楚。例如消化道摄影时,医生会让患者喝下一杯显影剂溶液(大多含硫酸钡),然后用各种角度照相,就能让胃肠道看得很清楚。除了用喝的方式以外,显影剂也可以做成灌肠、注射等剂型,用来突显不同的器官或部位。
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