3.0T MR冠状动脉成像技术的初步研究  

3.0T Coronary MR Angiography:Preliminary Study of Techniques

作　　者：张旻[1] 周诚[1] 杨正汉[1] 陈敏[1] 张晨[1] 尹晶晶[1] 

机构地区：[1]卫生部北京医院放射科,北京100730

出　　处：《实用放射学杂志》2008年第3期387-389,422,共4页Journal of Practical Radiology

摘　　要：目的探讨利用T2准备快速场回波(T2-TFE)序列进行3.0T冠状动脉MR成像(CMRA)技术的可行性。方法采用三维T2-TFE序列在3.0TMR成像设备上对33例研究对象进行CMRA检查,同时采用心电触发及呼吸导航回波技术,扫描获得的图像进行MIP和Soap Bubble软件重建。对图像质量进行评价并测量冠状动脉各主要分支的长度。结果128支冠状动脉分支中达到Ⅲ级以上的有115支可以满足影像学诊断。各冠状动脉主要分支的长度测量为LM(12.0±3.8)mm,LAD(79.4±18.9)mm,LCX(60.0±12.7)mm,RCA(110.7±27.2)mm。结论在3.0T设备上应用T2-TFE序列获得的冠状动脉影像具有较高SNR、CNR,图像质量基本可以满足影像学诊断需要。Objective To explore the feasibility of coronary magnetic resonance angiography （CMRA） with a T2 -prepared turbo field echo （T2 -TFE） sequence at 3. 0T MR scanner. Methods 33 objects underwent CMRA at 3.0T MR imaging unit. The CMRA was performed with a 3D T2 - TFE sequence. Electrocardiographically gating combined with real - time respiratory navigator gating and tracking was used to suppress the cardiac motion and correct for respiratory - induced coronary artery motion. The original images were reconstructed with MIP and Soap Bubble software. The quality of CMRA was evaluated and the lengths of the main coronary arterial branches were measured. Results 115 of 128 coronary arteries were scored higher than 3 with the standard of image quality. The lengths of LM, LAD, LCX and RCA were（12.0±3.8） mm,（79.4±18.9） mm,（60.0±12.7） remand （110.7±27.2） mm, respectively. Conclusion CMRA with T2- TFE sequence is feasible at 3.0T.

关 键 词：磁共振成像 心脏 冠状动脉 快速场回波 

分 类 号：R445.2[医药卫生—影像医学与核医学] R322.121[医药卫生—诊断学]