| 心率变异率对3.0T磁共振自由呼吸全心冠状动脉成像图像质量的影响 |
| |
| 引用本文： | 于兵,孙红彬,侯阳,郭启勇. 心率变异率对3.0T磁共振自由呼吸全心冠状动脉成像图像质量的影响[J]. 中国医学影像技术, 2010, 26(2): 282-284 |
| |
| 作者姓名： | 于兵 孙红彬 侯阳 郭启勇 |
| |
| 作者单位： | 1. 中国医科大学附属盛京医院放射科,辽宁,沈阳,110004
2. 中国医科大学附属第四医院放射科,辽宁,沈阳,110032 |
| |
| 摘 要： | 目的 观察3.0T磁共振自由呼吸全心冠状动脉成像过程中平均心率(HR)及心率变异对图像质量的影响.方法 应用Philips 3.0T MR,采用节段k空间采集梯度回波序列对65名健康志愿者行自由呼吸回顾性心电门控全心磁共振冠状动脉成像(MRCA)检查.心率变异的程度用HR的标准差占R-R间期的百分比表示.由2名有经验的放射科医生对各冠状动脉近端的MRCA图像质量进行评分(1分:优秀;2分:良好;3分:一般;4分:无诊断意义).采用Pearson相关性分析检验各冠状动脉平均HR及心率变异与MRA图像质量的相关性.结果 65名健康志愿者的平均HR为(64.5±13.3)次/分,心率变异为(6.1%±2.6)%.HR与右侧冠状动脉(P<0.05)以外的各支冠状动脉近端MRA的图像质量无相关性(P>0.05),心率变异与各支冠状动脉的图像质量均显著相关(P<0.001).结论 心率变异对3.0T自由呼吸MRCA图像质量的影响较HR更为显著.
|
| 关 键 词： | 磁共振血管成像 冠状血管 心律 图像质量 |
Effect of heart rate variability on image quality of 3D free-breathing whole-heart coronary MR angiography with 3.0T scanner |
| |
| YU Bing,SUN Hong-bin,HOU Yang and GUO Qi-yong. Effect of heart rate variability on image quality of 3D free-breathing whole-heart coronary MR angiography with 3.0T scanner[J]. Chinese Journal of Medical Imaging Technology, 2010, 26(2): 282-284 |
| |
| Authors: | YU Bing SUN Hong-bin HOU Yang GUO Qi-yong |
| |
| Affiliation: | Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China;Department of Radiology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China;Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China;Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China |
| |
| Abstract: | Objective To observe the effect of the average heart rate (HR) and the variability of HR on image quality of 3D free-breathing whole-heart coronary MR angiography (MRCA).Methods A total of 65 healthy volunteers underwent retrospectively electrocardiography-gated 3D free-breathing whole-heart coronary MRA with ECG-gated 3D segmented-k-space gradient echo sequence.Two observers evaluated image quality of each coronary segment.Visualization of the proximal coronary arteries (CA) with coronary MRA was qualitati... |
| |
| Keywords: | Magnetic resonance angiography Coronary vessels Heart rate Image quality |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国医学影像技术》浏览原始摘要信息 |
|
点击此处可从《中国医学影像技术》下载全文 |
|
