| 王敏杰,王培军,左长京,李晓兵,萧毅,邵成伟,薛宏.多层螺旋CT肝脏增强多期扫描成像质量分析[J].中国医学影像技术,2002,18(5):417~418 |
| 多层螺旋CT肝脏增强多期扫描成像质量分析 |
| Multi-Slice Helical CT : Image Quality Analysis of Hepatic Multiphases Enhancement |
| 投稿时间：2001-11-15 |
| DOI： |
| 中文关键词: 体层摄影术,X线计算机 肝脏 对比剂 |
| 英文关键词:Tomography, X-ray computed Liver Contrast medium |
| 基金项目: |
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| 中文摘要: |
| 目的 回顾性分析多层螺旋CT肝脏增强多期扫描成像质量,找出影响该图像质量的因素及相关关系。方法 选择我院完成的2456例肝脏增强多期扫描图像,分别对肝动脉期、门脉期进行成像质量评价。结果 当注射速度为3.0ml/s、剂量为1.5ml/kg时,大部分(＞70%)病人能在注射开始后23s与45s获得满意的动脉期和门脉期图像。结论 当以上述注射速度和剂量从肘静脉注射非离子型对比剂(300mgI/ml)时,超过70%的病人肝动脉和门静脉对比剂达到峰值的时间分别为26~28s和48~50s。 |
| 英文摘要: |
| Purpose To evaluate the effective factors of image quality by interpreting the images of hepatic multiphases enhancement retrospectively. Methods All of 2456 cases were performed on multi-slice helical CT, and multiphases including arterial and portal phase were acquired. All images of arterial and portal phase were respectively evaluated. Results Most images of arterial and portal phase (＞70%) were excellent when scan delay time at 23s and 45s after injection with a 1.5ml/kg bolus of contrast material infused at 3.0ml/s. Conclusion The peak time of arterial and portal phase were 26-28s, 48-50s for most patients with the above mentioned dose and injection rate. |
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