| 何建勋,孙翀鹏,曾庆思,邓宇,李新春.磁共振全心冠状动脉成像技术的初步研究[J].中国医学影像技术,2006,22(7):1024~1027 |
| 磁共振全心冠状动脉成像技术的初步研究 |
| Preliminary study of whole-heart coronary MR angiography |
| 投稿时间：2006-02-17 修订日期：2006-04-04 |
| DOI： |
| 中文关键词: 磁共振血管造影术 心脏 冠状动脉 |
| 英文关键词:Magnetic resonance angiography Heart Coronary artery |
| 基金项目: |
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| 中文摘要: |
| 目的 评价全心冠状动脉成像对正常冠状动脉显示的可靠性。方法 40例健康志愿者行全心冠状动脉成像,一周内对这40例志愿者行分段冠状动脉成像。对图像质量进行评分,计算成像信噪比(SNR)、对比噪声比(CNR)及扫描时间。结果 38例受检者完成检查,全心冠状动脉成像时间明显短于分段冠状动脉成像(P<0.01)。全心冠状动脉成像评分在Ⅲ级以上的血管为138支(90.8％),分段冠状动脉成像为130支(85.5％),两者对血管显示率无明显差异(P>0.05)。全心冠状动脉成像较分段冠状动脉成像具有更高的信噪比(SNR)(P<0.01),两种方法对比噪声比(CNR)无显著性差异。结论 全心冠状动脉成像与分段冠状动脉成像的显示率无明显差异,但全心冠状动脉成像对冠脉的分支显示好。 |
| 英文摘要: |
| Objective To evaluate the reliability of whole-heart coronary MR angiography to visualize normal coronary artery branches. Methods Fourty healthy volunteers underwent whole-heart coronary MR angiography, segmental coronary MR angiography was performed in the same 40 volunteers within one week. The image qulitity was evaluated by marks, as well as the signal-to-noise ratios (SNR) and contrast-to-noise ratio (CNR) of the two methods. Results Thirty-eight subjects completed the examination. The scan time of whole-heart coronary MR angiography was much shorter than that of the control group (P<0.01). 138/152 branches (90.8%) were graded more than Ⅲ grade by whole-heart coronary MR angiography. 130/152 branches (85.5%) were graded more than Ⅲ grade by segmental coronary MR angiography. There was no statistical difference between the two methods. SNR of whole-heart coronary MR angiography of the blood and the myocardium was higher than that of the control group, but CNR between the two approaches was not statistically different. Conclusion There is no difference in the visualization rate of normal coronary artery between whole-heart coronary MR angiography and segmental coronary MR angiography, but whole-heart coronary MR angiography is superior in visualizing the branches. |
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