| 李世兰,牟安娜,李昕,张晨,陈辉,宋清伟,刘爱连,李智勇.中国正常人群心脏MR体素内不相干运动成像技术的影响因素[J].中国介入影像与治疗学,2018,15(12):748-752 |
| 中国正常人群心脏MR体素内不相干运动成像技术的影响因素 |
| Impact factors of cardiac MR intravoxel incoherent motion imaging in normal population in China |
| 投稿时间：2018-03-27 修订日期：2018-10-18 |
| DOI：10.13929/j.1672-8475.201803049 |
| 中文关键词: 磁共振成像 体素内不相干运动 心肌 |
| 英文关键词:Magnetic resonance imaging Intravoxel incoherent motion Myocardium |
| 基金项目:辽宁省教育厅科研基金项目（L2016021）、辽宁省科技厅科研项目（20170540235）。 |
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| 中文摘要: |
| 目的 探讨影响中国正常人群心脏MR体素内不相干运动（IVIM）成像成功率的影响因素。方法 收集99名接受3.0T MR心脏IVIM成像正常志愿者的资料，均于左心室心尖部、中间部和基底部分别行IVIM扫描，比较IVIM成像中图像成功组与失败组间年龄、性别、体质量指数（BMI）、心率，成功组不同年龄、BMI亚组间触发延迟（TD）时间；对TD时间与心率行相关性分析，同时计算TD/RR间期。结果 左心室中间部、基底部、心尖部IVIM成像中，图像成功率分别为66.67%（66/99）、64.65%（64/99）和60.61%（60/99）。成功组心率低于失败组（t=－3.11，P=0.003），2组间年龄、性别和BMI差异均无统计学意义（P均>0.05）。心率与TD时间呈负相关（rs=－0.66，P<0.01）。成功组TD/RR间期为（55.77±5.51）%，较稳定。结论 对中国正常人群行IVIM成像具有可行性。成功率影响因素包括心率、TD时间、TD/RR间期，TD/RR间期是相对稳定的调节参数。 |
| 英文摘要: |
| Objective To explore the impact factors of cardiac MR intravoxel incoherent motion (CMR-IVIM) imaging in normal persons in China. Methods Ninety-nine healthy volunteers underwent cardiac IVIM imaging with 3.0T MR were enrolled. Short axis CMR-IVIM on the apex, middle and base of left ventricular was performed. Age, sex, body mass index (BMI) and heart rate were compared between imaging success group and failure group. In success group, trigger delay (TD) was compared among different ages and BMI, and correlation analysis was completed between TD and heart rate. TD/RR ratio was calculated. Results The success rate of CMR-IVIM imaging on the middle, base and apical part was 66.67% (66/99), 64.65% (64/99) and 60.61% (60/99), respectively. Heart rate in success group was lower than failure group (t=-3.11, P=0.003). Age, sex and BMI had no statistical difference between the two groups (all P>0.05). Heart rate and TD showed negative correlation (rs=-0.66, P<0.01). TD/RR interval was a relatively stable adjusting parameter, and TD/RR interval range was (55.77±5.51)% in successful cases. Conclusion IVIM imaging in normal population in China was feasible. Impact factors of success rate included heart rate, TD and TD/RR interval. TD/RR interval was a relatively stable adjusting parameter. |
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