医疗卫生装备2017，Vol.38Issue(9)：74-77,4.DOI:10.7687/j.issn1003-8868.2017.09.074
基于ACR标准的MRI设备图像信噪比及几何精度检测研究
Detection of SNR and geometric accuracy of MRI system based on ACR standards
摘要
Abstract
Objective To detect the SNR and geometric accuracy of MRI based on American College of Radiology (ACR)standards.Methods The SNR and geometric accuracy of Siemens Skyra 3.0T,Siemens Trio 3.0T and GE Excite HD 1.5T MRI were measured with ACR phantom,and the detection results were calculated according to the standards.Results The SNR values of Siemens Skyra 3.0T,Siemens Trio 3.0T and GE Excite HD 1.5T MRI were 589.98,438.50 and 277.12 respectively.Siemens Skyra 3.0T MRI had the values of geometric accuracy being-1.93％ at X direction,-3.20％ at Y direction and 0.68％ at Z direction,Siemens Trio 3.0T MRI had the value of geometric accuracy being-0.87％ at X direction,-2.33％ at Y direction and 1.49％ at Z direction,GE Excite HD 1.5T MRI had the values of geometric accuracy being 0.20％ at X direction,-1.53％ at Y direction and 1.69％ at Z direction.Conclusion The detection of the SNR and geometric accuracy of MRI can effectively guarantee the image quality.关键词
MRI/信噪比/几何精度/ACR体模/质量控制Key words
MRI/SNR/geometric accuracy/ACR phantom/quality control分类
医药卫生引用本文复制引用
付丽媛,许尚文,陈自谦,梁永刚,倪萍,林迪逵,熊晖,刘冰川,陈建新,钟群,肖慧..基于ACR标准的MRI设备图像信噪比及几何精度检测研究[J].医疗卫生装备,2017,38(9):74-77,4.基金项目
国家重点研发计划数字诊疗装备研发重点专项子课题(2016YFC0103103) （2016YFC0103103）
福建省科技计划项目(201610010) （201610010）
原南京军区重大课题(14ZX23) （14ZX23）
