优化低场MRU的成像技术

Optimization of Low-field MRU Imaging Technique

目的:探讨低场MRU扫描技术,优化图像质量。方法:使用日立公司生产的Airis-Ⅱ comfort开放式永磁型0.3T磁共振成像系统,采用3D-FSE序列,用憋尿法代替口服速尿法显示整个泌尿系,改善图像质量。结果:33例MRU检查均一次成功,图像清晰,达到了诊断要求,总的诊断符合率为98.0%,对输尿管梗阻程度的判断和定位诊断的准确性为100%。结论:研究表明,检查前患者准备充分,采用多种扫描技术联合和合理的扫描参数,低场MR同样可以获得质量很高的MRU图像。

Objective To investigate low-field MRU scanning technique to optimize the quality of images. Methods Airis- Ⅱ comfort open 0.3T low-field MR imaging system made by HITACHI company were used in the examination. The quality of images was improved when combining 3D-FSE sequences. Results MRU examination was implemented in all 33 cases and all the cases had distinct images except two. The total diagnostic accuracy was 98.0%. The accuracy of MRU in the detection of the degree and location of ureter obstruction was 100%. Conclusion This study shows that if patients are wellprepared before examination, low-field MR can also produce good MRU images of high quality by using manifold scanning techniques and suitable technical parameters.