磁共振前列腺波谱扫描技术及其质量控制研究  

Scanning skill and quality control in prostate magnetic resonance spectroscopy

作　　者：付丽媛[1] 梁永刚[1] 陈坚[1] 倪萍[2] 刘冰川[1] 陈建新[1] 陈自谦[1] 林朝上 陈振[1] FU Li-yuan LIANG Yong-gang CHEN Jian NI Ping LIU Bing-chuan CHEN Jian-xin CHEN Zi-qian LIN Chao-shang CHEN Zhen(Medical Image Center, Fuzhou General Hospital, Fuzhou 350025, China Department of Medical Engineering, Fuzhou General Hospital, Medical Equipment Quality Control Center of Fujian Province, Fuzhou 350025, China)

机构地区：[1]福州总医院医学影像中心,福州350025 [2]福州总医院医学工程科,福建省医学装备管理质量控制中心,福州350025

出　　处：《医疗卫生装备》2017年第4期94-97,共4页Chinese Medical Equipment Journal

基　　金：原南京军区重大课题(14ZX23);军事医学计量科研专项课题(2011-JL2-014);福建省科技计划项目(2016I0010)

摘　　要：目的 :分析影响磁共振前列腺波谱扫描技术成像质量的因素,提出质量控制措施,提高前列腺波谱检查的成功率和波谱成像质量。方法:回顾性分析2009年10月至2015年12月间1 255例前列腺磁共振波谱分析(magnetic resonance spectroscopy,MRS)患者资料(所有患者均有前列腺疾病临床症状,检查资料齐全且经病理证实),MRS扫描采用多体素3D化学位移成像技术。扫描结束后使用Spectroscopy前列腺波谱专用后处理软件对MRS进行规范化后处理,观察MRS波谱质量,若有基线杂乱、信噪比低下等情况,找出原因重新扫描,直到满足诊断要求。结果:1 218例患者准备充分,定位准确,参数设置合理,后处理过程规范,所得谱线基线平稳,化合物位置准确;1例患者因扫描床位模式不正确导致检查失败;9例患者因准备不充分,未能排尿、排便导致谱线基线不稳、波谱谱线形态差;26例患者因匀场效果不好导致谱线基线不稳、谱线杂乱;1例患者因后处理不规范导致良性疾病谱线出现恶性疾病的代谢产物。结论:患者准备充分、定位规范准确、参数设置合理、匀场效果佳及规范的后处理是保证前列腺MRS扫描成功及结果可靠的关键,对于提高前列腺MRS的质量有重要意义。Objective To investigate the factors influencing the image quality of prostate magnetic resonance spectroscopy（MRS）, and to put forward quality control measures to improve MRS in success ratio and image quality. Methods Totally1 255 patients with prostate diseases confirmed pathologically from October 2009 to December 2015 had their MRS data analyzed retrospectively. MRS was executed with multi-voxel 3D chemical shift imaging technique, and special-purpose software was involved in for post processing. Re-scanning would be performed in case of baseline clutter, low SNR and etc.Results There were 1 218 patients had MRS executed well in preparedness, positioning, parameters setup, post processing,baseline and chemical shift, one patient underwent unsuccessful MRS due to incorrect bed mode, 9 ones due to unstable baseline resulting from unsatisfactory preparedness, 26 ones due to unstable baseline resulting from bad shimming and 1 case due to non-standard post processing. Conclusion Prostate SRS depends on patient preparedness, positioning, parameters setup, shimming and post processing.

关 键 词：磁共振成像系统 前列腺 磁共振波谱分析 扫描技术 质量控制 

分 类 号：R445.2[医药卫生—影像医学与核医学]