目的：探讨螺旋CT扫描时，高压注射器造影剂的注射速度，延迟时间等技术参数的选择。

Purpose:To deduce the technique parameter like contrast injectional speed, delay time and etc with high pressure injector when carrying out spiral CT scan.

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本文分别采用CT注射器(MCT)注射(46例)和手推注(66例)造影剂作肝脏动态ct扫描对比研究。

Study of hepatic dynamic ct with 46 cases of the Medrad ct injector (MCT) and 66 cases of the hand bolus injection contrast medium in this paper.

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方法对采用高压注射器注射造影剂行16层螺旋ct增强扫描的799例患者，进行回顾性分析、总结。

Methods Reviewed and analyzed the courses of using high pressure injector in the 16-detector-row ct for 799 patients.

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