3.0T磁共振检查左心耳的方法和扫描序列

发布时间：2018-05-26 15:36

本文选题：磁共振成像 + 心耳　；参考：《中国介入影像与治疗学》2015年11期

【摘要】：目的探讨左心耳的MR检查定位方法及扫描序列。方法收集接受左心耳MR检查的患者30例,采用Siemens Skyra 3.0T超导MR成像系统,对患者心脏行黑血和(或)亮血多层、多方位扫描,获取左心耳的标准层面,并进行亮血电影序列观察心脏的运动功能,对比剂填充像及充盈像扫描观察对比剂动态填充和充盈情况。于图像工作站对扫描定位及图像质量进行评价。结果 30例患者均未进行心律控制,并在屏气(26例)或自由呼吸(4例)的情况下顺利完成检查,平均检查时长(19±5)min。2D黑血HASTE序列图像优良25例,出现慢血流伪影并影响诊断5例。2D亮血TrueFISP序列图像满足诊断要求28例,出现较重的磁敏感伪影经较准后伪影去除2例。Cine-TrueFISP序列的所有图像均可满足诊断要求,Dynamic-Turbo-FLASH序列图像良好30例,IR-TrueFISP序列图像满足诊断要求30例,其中图像质量优22例。经多序列综合评定,30例患者的图像信息均满足诊断要求。结论在不控制受检者心率、屏气或自由呼吸的情况下,采用3.0T MR高SNR的优势,采用多层、多方位定位及多种快速成像序列,可得到完整显示左心耳的满意图像。
[Abstract]:Objective to study the location and scanning sequence of left atrial auricle. Methods Siemens Skyra 3.0T superconducting Mr imaging system was used in 30 patients with left atrial appendage Mr examination. The patients' heart was scanned by multi-layer and multi-directional scanning of black blood and / or bright blood. The standard level of left atrial appendage was obtained. The motion function of the heart was observed by bright blood film sequence, and the dynamic filling and filling of contrast agent were observed by contrast agent filling image and filling image scanning. Scan location and image quality were evaluated on image workstation. Results all the 30 patients had no cardiac rhythm control and completed the examination successfully under the condition of breath-holding in 26 cases or free breathing in 4 cases. The average examination time was 19 卤5)min.2D black blood HASTE sequence in 25 cases. Slow flow artifact appeared and affected the diagnosis of 5 cases. 2D bright blood TrueFISP sequence images met the diagnostic requirements in 28 cases. All images of Cine-TrueFISP sequence can meet the diagnostic requirements. 30 cases with good image quality of IR-TrueFISP sequence can meet the diagnostic requirements, among which 22 cases have excellent image quality. The image information of 30 patients met the diagnostic requirements. Conclusion under the condition of not controlling heart rate, holding breath or breathing freely, using 3.0T Mr with high SNR, using multi-layer, multi-orientation location and many kinds of fast imaging sequence, the satisfactory image of left atrial auricle can be obtained.
【作者单位】：徐州市中心医院MR室;
【分类号】：R331.31;R445.2

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