contrast media bolus
... contrast enhancement 对比增强 contrast media bolus 造影剂团注 contusion of kidney 肾挫伤 ...
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第一组以固定时间间隔扫描，第二组及第三组以团注造影剂跟踪技术启动扫描。
In group one, the scanning delays were fixed, whereas in group two and three, scanning delays were determined individually by means of a semiautomatic bolus tracking device.
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