巧用米袋在1.5T MR颌面部成像中的应用  

Application of rice bag in 1.5T MR imaging in maxillofacial

作　　者：李鸿恩 李悦龙 谢汉民 吕培锋 李成威 曾益辉 LI Hong’en;LI Yuelong;XIE Hanmin;LüPeifeng;LI Chengwei;ZENG Yihui(Department of Radiology,Guangdong Women and Children Hospital,Guangzhou 511400,China)

机构地区：[1]广东省妇幼保健院放射科,广东广州511400

出　　处：《实用放射学杂志》2024年第2期319-322,共4页Journal of Practical Radiology

摘　　要：目的探讨米袋在1.5T MR颌面部频率选择脂肪抑制(FS)序列成像中的应用价值。方法选取行颌面部MR检查患者41例,采用快速自旋回波(FSE)FS T_(2)常规扫描及加米袋FSE FS T_(2)特殊扫描,由2名诊断经验丰富的副主任医师根据Likert 7分评分系统对2种序列图像进行评价及分析。评价内容包括FS、磁敏感伪影、运动伪影、图像整体质量。采用Wilcoxon符号秩和检验进行图像质量评分差异性分析,采用Kappa一致性检验进行2名阅片者之间相关性分析。结果41例患者均完成检查,FSE FS T_(2)序列加米袋组FS、磁敏感伪影、运动伪影、图像整体质量明显高于FSE FS T_(2)序列常规组图像,差异有统计学意义(P<0.01),2名阅片者相关性分析Kappa一致性较好(Kappa值=0.737~0.877,P<0.01)。结论巧用米袋应用在1.5T MR颌面部FS序列扫描中具有图像质量好、FS效果好、伪影少等优势,能较好地显示颌面部解剖结构及病灶情况,对于诊断颌面部疾病具有重要临床应用价值。Objective To investigate the application value of rice bag in 1.5T MR imaging of maxillofacial frequency selective saturated fat suppression(FS)sequence.Methods Forty-one patients with maxillofacial MR examination were collected.Rapid fast spin echo(FSE)FS T_(2) routine scan and rice bag FSE FS T_(2) special scan were used to evaluate and analyze the sequence images of the two kinds by two experienced associate chief physicians in the department according to the Likert 7-point scoring system.The evaluation included FS,magnetic sensitive artifact,motion artifact,and overall image quality.Wilcoxon sign rank sum test was used to analyze the difference of image quality scores,and Kappa consistency test was used to analyze the correlation between two viewers.Results All the 41 patients completed the examination,and the FSE FS T_(2) plus rice bag group had significantly higher FS,magnetic sensitive artifact,motion artifact and overall image quality than the conventional FSE FS T_(2) group,with statistical significance(P<0.01).Kappa consistency was good in correlation analysis between the two viewers(Kappa value=0.737-0.877,P<0.01).Conclusion The application of rice bag in the 1.5T MR maxillofacial FS sequence scan has the advantages of good image quality,good FS effect and few artifacts,which can better display the maxillofacial anatomical structure and lesions,and has important clinical application value for the diagnosis of maxillofacial diseases.

关 键 词：磁共振成像 米袋 颌面部 脂肪抑制 

分 类 号：R445.2[医药卫生—影像医学与核医学] R816.1[医药卫生—诊断学]