优化低场MRCP技术参数的初步探讨  

Preliminary Investigation of Imaging Parameters on Optimizing Low Field MRCP

作　　者：邓生德 魏铭 郑生喜 燕小梅 

机构地区：[1]甘肃省张掖地区人民医院影像中心,甘肃张掖734000

出　　处：《实用放射学杂志》2003年第7期641-644,共4页Journal of Practical Radiology

摘　　要：目的　探讨低场MRCP技术参数 ,优化图像质量。方法　使用日立公司生产的Airis -Ⅱcomfort开放式永磁型 0 .3T磁共振成像系统对 77例患者行MRCP检查 ,采用 3D -FSE和 2D单次激发屏气FSE 2种序列联合 ,用自配的 3 %～ 5 %钆喷酸葡胺水溶液抑制胃内滞留液的高信号 ,改善图像质量。结果　 77例患者MRCP检查均一次成功 ,除 2例外 ,其余图像清晰 ,均达到诊断要求 ,总的诊断符合率为 79.2 % ,对胰胆管梗阻程度的判断和定位诊断的准确性为 10 0 %。结论　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 。Objective To investigate imaging parameters on low field MRCP and to optimize the quality of images.Methods MRCP in 77 cases were performed using Airis-Ⅱcomfort open 0.3T low field MR imaging system made by HITACHI company.3D-FSE combined with 2D single-shot breath-hold FSE sequences were used.The 3%～5% compound solution of Gd-DTPA was taken to restrain the hige signals from remaining liquid in stomach.Results MRCP examination was succeeded in all 77 cases and the images in all cases but 2 were fine for diagnosis.The total diagnostic accuracy was 79.2%.The accuracy of MRCP in the detection of the degree and location of pancreaticobiliary duct obstruction was 100%. Conclusion The distinct MRCP images can be obtained with low field MR system using combination of several scanning techniques and proper scanning parameters,and also patients have to prepare fully.

关 键 词：低场MRCP技术 参数 胰胆管梗阻 影像学检查 质量控制 

分 类 号：R445.2[医药卫生—影像医学与核医学]