非屏气三维导航技术磁共振冠状动脉成像  

Coronary artery imaging with free-breathing real-time navigator three-dimensional MR coronary angiography

作　　者：李晓兵[1] 史晓唏[1] 秦明明[1] 张继斌[1] 吴永华[2] 罗健君[1] 翁晓琳 刘仁坚[1] 

机构地区：[1]江苏省苏州市立医院总部放射科,江苏苏州215002 [2]江苏省苏州市立医院心内科,江苏苏州215002

出　　处：《中国医学影像技术》2005年第8期1220-1222,共3页Chinese Journal of Medical Imaging Technology

基　　金：苏州市社会发展计划项目(SS0320)。

摘　　要：目的评价非屏气三维导航技术磁共振冠状动脉成像的可行性。方法应用非屏气三维导航技术磁共振冠状动脉成像方法,对20名受检者分别进行左、右冠状动脉成像,经后处理获得左、右冠状动脉血管图像。应用信噪比评价冠状动脉图像,并测量冠状动脉主干及其主要分支的显示长度。结果所有受检者均显像成功,冠状动脉图像的信号强度为129.3±20.63,信噪比为37.35±6.32,冠周组织的信号强度为33.4±13.11,信噪比为9.65±4.02,两者比较有显著性差异(P<0.01)。左主干及左前降支、右冠及左回旋支冠状动脉的平均显示长度分别为(8.38±1.87)cm、(8.59±2.87)cm、(4.48±0.88)cm。结论非屏气三维导航技术磁共振冠状动脉成像有较高的信号强度和信噪比,应用于临床尚需进一步的对照研究。Objective To evaluate the value of free-breathing real-time navigator three-dimensional MR coronary angiography. Methods Free-breathing real-time navigator three-dimensional MR coronary angiography was performed in twenty cases, the major coronary arteries were acquired after post-processing. The images of the major coronary arteries were evaluated with signal intensity and signal-to-noise ratio （SNR）, and demonstrate the length of the major coronary arteries and branches. Results Free-breathing real-time navigator three-dimensional MR coronary angiography was successfully performed in all the cases.Signal intensity and SNR of coronary arteries and tissues beside the coronary arteries were 129.3±20.63, 37.35±6.32 and 33.4±3. 11, 9. 65±4.02, respectively. Statistical differences were significant between them （P 〈0.01）. The length of the combined left main andleft anterior descending branches was （8.38±1.87） cm, oftheright coronary was （8.59±2.87） cm and of the left circumflex branch was （4.48±0.88） cm. Conclusion Better signal intensity and SNR can be achieved with free-breathing real-time navigator three-dimensional MR coronary angiography, more researches should be done before application in clinics.

关 键 词：冠状动脉 磁共振血管造影术 图像处理 计算机辅助 

分 类 号：R445.2[医药卫生—影像医学与核医学] R816.2[医药卫生—诊断学]