| 史锡腾,郭莉,江迅.CT增强中对比剂注射方案探讨[J].中国医学影像技术,2001,17(5):483~485 |
| CT增强中对比剂注射方案探讨 |
| A Research about Injection Project of Contrast Media During Enhanced CT Scanning |
| 投稿时间：2000-12-16 |
| DOI： |
| 中文关键词: CT增强 对比剂 注射量 |
| 英文关键词:Enhanced CT scanning Contrast media Volume |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨CT增强中对比剂的最少使用量,且能保证高质量图像的方案。方法 对5例肝门动态扫描CT增强图像有关靶部位的CT值逐层测量,从而得到相应的"CT值-时间曲线",最终找出有效增强周期。结果 根据经验确定主动脉、门静脉及肝实质的增强阈值为70HU,并找到增强阈值达到和结束的时间。 结论 使用新型螺旋CT进行增强扫描,可以减少对比剂的使用量,且注射速率、延迟时间等有关参数也应根据具体情况确定。 |
| 英文摘要: |
| Objective To investigate a method that perfect imaging could be obtained and minimal contrast media was used. Methods The 5 cases with enhanced CT images were measured at each slice, then the Hu of aim-position was obtained and the Hu-time curve was got. At last, the valid enhanced period would be found. Results According to the experience, the enhancement threshold of aorta, portal vein and hepar were set at 70 HU. The onset and ending time of enhancement threshold were found. Conclusion The dose of contrast media should be extenuatory when new type spiral CT was operated, and the correlative parameters, such as flow rate, delay time etc. should be adjusted according to the Objective condition. |
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