低场磁共振的化学位移及相关技术在骨关节病变中的应用初探

目的 :探讨低场磁共振的化学位移及相关技术在骨关节中的应用价值。方法 :2 1例骨关节病变均作常规SET1WI、FSET2 WI及GRET1WI、T2 WI扫描 ,并对图像作对比分析。结果 :GRET1WI、T2 WI均较SET1WI、FSET2 WI对病灶的检出、病灶与正常组织信号对比、病灶边缘和范围显示有明显的优势。结论 :低场磁共振的化学位移及相关技术简单 ,成像时间短 ,不受静磁场不均匀性的影响 ,在骨关节病变的诊断中具有较高的应用价值。

Low-field MRI using chemical shift and related technique in bone and joint disease

Objective:To explore the value of chemical shift and related technique of low-field MR scanner in bone and joint disease.Methods:MR scans with both conventional SE T 1WI,FSE T 2WI and GRE T 1WI,T 2 *WI were performed in 21 patients with bone and joint disease.The pathological changes on the images were compared and analyzed.Results:GRE T 1WI and T 2WI had the advantages over SE T 1WI and FSE T 2WI in finding the lesion,displaying the border and extent of the lesion.Conclusion:Chemical shift and related technique of low-field MR scanner have relatively high value in the diagnosis of pathological changes of the bone and joint.The time of image formation is short and not affected by the in homogenousity of the static magnetic field.