磁共振成像2019，Vol.10Issue(2)：89-95,7.DOI:10.12015/issn.1674-8034.2019.02.003
不同医用磁共振设备在头颅DWI序列的临床图像质量评价研究
Clinical image quality evaluation of diffusion-weighted MR imaging of the brain of different medical MRI equipment
摘要
Abstract
Objective: To evaluate and compare the clinical image quality of brain diffusionweighted imaging sequence between different types of medical MRI equipment. Materials and Methods: Based on the "Clinical Image Quality Guide" issued by American College of Radiology, we made both subjective and objective image quaity evaluation of 531 cases of clinical brain MRI DWI sequences. Subjective evaluation was conducted mainly by Likert five-point scale method, and the objective evaluation was realized by measureing the signalto-noise ratio of the region of interest. The images were divided into domestic and imported groups, as well as 1.5 T and 3.0 T groups according to the types of the scanning equipment for comparative studies, and domestic 1.5 T and 3.0 T MRI equipments of United Imaging were selected as representatives to be compared with the imported equipment. Results: (1) In the subjective evaluation, the 3.0 T group was better than the 1.5 T group and the domestic group was better than the imported group. In the objective evaluation, the 1.5 T group was better than the 3.0 T group and the difference between the domestic and imported groups was not statistically significant. (2) In the 1.5 T group, both subjective and objective evaluation of the domestic subgroup was better than that of the imported subgroup. In the 3.0 T group, the difference of the subjective evaluation between these two subgroups was not statistically significant, and the objective evaluation of the imported subgroup was superior to that of the domestic subgroup. (3) In the 1.5 T group, both subjective and objective evaluation of United Imaging was superior to that of the imported equipment. In the 3.0 T group, the difference of the subjective evaluation between United Imaging and the imported equipment was not statistically significant;the objective evaluation of United Imaging was better than that of GE, but there was a gap of the outcome between United Imaging and Philips, and the difference of the evaluation between United Imaging and Siemens was not statistically significant. Conclusions: With respect to the brain diffusion-weighted imaging, the clinical image quality of the 1.5 T domestic MRI equipment may be better than that of the imported equipment, but there is a gap of the image quality between domestic and imported equipment of 3.0 T field intensity.关键词
医用设备/磁共振成像/扩散加权成像/头颅/图像质量Key words
medical equipment/magnetic resonance imaging/diffusion weighted imaging/head/image quality分类
医药卫生引用本文复制引用
王思敏,李彦,严福华,张欢,靳志嘉,翟晶,王炳顺,方文强..不同医用磁共振设备在头颅DWI序列的临床图像质量评价研究[J].磁共振成像,2019,10(2):89-95,7.基金项目
国家重点研发计划专项(编号:2016YFC0106800,2016YFC0106802,2016YFC0106805) （编号:2016YFC0106800,2016YFC0106802,2016YFC0106805）
