颅脑MRI运动伪影产生原因和抑制消除办法

Causes and Suppression Eliminate Methods of Brain MRI Motion Artifact

目的探讨颅脑MRI运动伪影产生原因和抑制消除办法。方法运用随机抽样的方法泸州医学院附属医院放射科2013年1月至2014年9月共收治的1630例需要接受颅脑MRI检查的患者,依据检查方法将这些患者分为研究组(n=815)和对照组(n=815)。给予对照组患者常规颅脑MRI检查,给予研究组患者加垫法的基础上颅脑MRI检查,然后对两组患者的一次性扫描结果进行统计分析。结果研究组患者的一次扫描成功率96%(24/25)显著高于对照组60.0%(15/25),一次性扫描失败率4.0%(1/25)显著低于对照组40.0%(10/25)(P<0.05)。结论加垫法的基础上颅脑MRI检查能够有效抑制消除运动伪影,从而促进图像质量、工作效率及医院综合效益的显著提升,值得在临床推广。

Objective To investigate the causes and suppression eliminating methods of brain MRI motion artifact.Methods 50 cases of patients needed brain MRI examination who were treated in Luzhou Medical College Hospital Radiology January 2013 to September 2014 by random sampling method, They were divided into study group （n= 815） and control group （n=815） according to inspection methods. The control group were given routine brain MRI examination, while the study group were given brain MRI examination on the basis of Padded law, then one-time scan results of the two groups were statistically analyzed.Results The first scan success rate of the study group 99.6% （812/815） was significantly higher than the control group 68.7% （560/815）, the one-time scan failure rate 0.4% （3/815） was significantly lower than the control group 31.3% （255/815）（P〈0.05）.Conclusions Brain MRI examination on the basis of padded method can effectively inhibit the elimination of motion artifacts, thus contribute significantly to improve image quality, efficiency and hospital benefits, so it is worthy of clinical practicing.