Abstract：Objective To compare the image quality of anterior cruciate ligament (ACL) and knee imaging performed by domestic and
imported magnetic resonance imaging (MRI) equipment. Methods A total of 450 sets of knee MRI image datasets from 25 hospitals
of 19 regions including Shanghai, Guangdong and Liaoning in China were prospectively analyzed. Image datasets were divided
into domestic and imported MRI groups, as well as 1.5T and 3.0T groups according to different MRI equipment. Image quality of
ACL demonstration on sagittal fat saturated T2-weighted imaging (T2WI) or proton density (PD) sequences, coronal T2WI or PD
sequences, axial T2WI or PD sequences and sagittal T1-weighted imaging (T1WI) was evaluated by subjective 5-scale scores. 1-score
represented the worst image quality and 5-score represented the best. Results Regarding sagittal T2WI or PD sequences, among
1.5T MRI group, post hoc comparison showed that the image quality of AoTai (P=0.008), Siemens (P=0.017), LangRun (P=0.001)
and United Imaging (P<0.001) was better than that of GE with statistical significance. Among 3.0 T MRI group, image quality of
United Imaging (P=0.031) was better than that of GE. Regarding coronal T2WI or PD sequences, among 1.5T MRI group, the image
quality of United Imaging was better than that of Siemens (P<0.001) and AoTai (P<0.001) with statistical significance. Among 3.0T
MRI group, image quality of United Imaging (P=0.004) and Philips (P<0.001) was better than that of GE, image quality of Philips
(P=0.004) and United Imaging (P=0.018) was better than that of Siemens. Regarding axial T2WI or PD sequences, among 1.5T
MRI group, the image quality of GE (P<0.001) and LangRun (P=0.029) was better than that of Siemens with statistical significance.
Among 3.0T MRI group, image quality of Philips (P=0.009) and United Image (P=0.009) was better than that of Siemens. Regarding
sagittal T1WI sequences, there was no statistically significant difference among various types of MRI equipment. Conclusion
Whether 1.5T or 3.0T MRI equipment, in the evaluation of ACL and overall image quality, domestic MRI equipment had comparative
image quality with imported MRI equipment, indicating its utility for clinical diagnosis.
秦乐，师小凤，王思敏，李彦，杜联军，张欢，严福华，颜凌. 国产与进口磁共振设备在前交叉韧带成像中的图像质量比较[J]. 中国医疗设备, 2019, 34(10): 1-5.
QIN Le, SHI Xiaofeng, WANG Simin, LI Yan, DU Lianjun, ZHANG Huan, YAN Fuhua, YAN Ling. Image Quality Comparison Between Domestic and Imported MRI Equipment in the
Demonstration of Anterior Cruciate Ligament of the Knee. China Medical Devices, 2019, 34(10): 1-5.
