期刊文献+

MRI检查常见伪影的产生机制及解决措施 被引量:7

Discussion of formation mechanism and solutions of artifacts commonly seen in magnetic resonance imaging examination
下载PDF
导出
摘要 目的:研究磁共振成像中常见伪影的产生原因与抑制方法,以减少MRI检查时产生的伪影,提高图像质量,为临床提供良好的影像资料。方法:收集我院168例患者不同类型和不同程度MRI图像伪影病例,进行系统性分析,其中,四肢扫描17例,脊柱扫描37例,头颈部扫描71例,腹部扫描43例。结果:卷褶伪影36例,占21.4%;容积效应伪影10例,占5.9%;化学位移伪影12例,占7.2%;运动伪影66例,占39.2%;磁化率伪影及金属伪影24例,占14.3%;交叉伪影9例,占5.4%;截断伪影11例,占6.6%。结论:了解各种伪影产生的机制,利用各种有效技术抑制或消除图像伪影,对提高图像质量和提高诊断率具有重要意义。 Objective: To reduce the artifacts generated in magnetic resonance imaging(MRI) examination,improve the image quality and provide good image data for clinical use by studying the generation reasons and suppression methods of artifacts commonly seen in MRI examination.Methods: Medical records with different types and varying degrees of MR image artifacts of 168 patients of our hospital were collected for systematic analysis,of which 17 cases were limbs scan,37 cases were spine scan,71 cases were head and neck scan and 43 cases were abdomen scan.Results: There were 36 cases of folded artifacts,accounting for 2.4%,10 cases of volume effect artifacts,accounting for 5.9%,12 cases of chemical shift artifacts,accounting for 7.2%,66 cases of motion artifacts,accounting for 39.2%,24 cases of magnetic susceptibility artifacts,accounting for 4.3%,9 cases of cross artifacts,accounting for 5.4% and 11 cases of truncation artifacts,accounting for 6.6%.Conclusion: Understanding the generation mechanism of various artifacts and using various effective techniques to suppress or eliminate image artifacts are of important significance to improve the image quality and the diagnostic rate.
出处 《中国医药导报》 CAS 2011年第35期104-105,108,共3页 China Medical Herald
关键词 磁共振成像 伪影 Magnetic resonance imaging Artifacts
  • 相关文献

参考文献1

二级参考文献9

共引文献11

同被引文献52

引证文献7

二级引证文献18

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部