磁共振导航回波技术在胆道水成像中的应用  

The application of MRI navigator echo technique in cholangiopancreatography

作　　者：刘宁[1] 何建军[1] 张毅军[1] 程尧[1] 许明芝[1] 

机构地区：[1]解放军总医院第一附属医院放射科,北京100037

出　　处：《医学影像学杂志》2010年第3期401-403,共3页Journal of Medical Imaging

摘　　要：目的:探讨磁共振导航回波技术在胆道水成像中的应用价值。方法:对23例在胆道水成像检查中不能配合吸气屏气的患者,使用磁共振导航回波技术进行扫描,扫描中只要求患者保持平静下自由呼吸,采用厚层快速自旋回波T2WI序列及薄层半傅立叶T2WI序列,扫描完成后,对薄层半傅立叶T2WI序列进行3D重建,以显示胆道全景。结果:19例患者的检查均能达到较理想的效果,可以清晰的显示胆道及病变,4例患者呼吸不稳定导致图像中出现伪影,但不影响最终的诊断。结论:磁共振导航回波技术的应用,可以使配合不好的患者的胆道水成像检查得到较理想的结果,扩大了检查适应症的范围,有助于临床的治疗。Objective：To evaluate the value of MRI navigator echo technique in cholangiopancreatography.Methods：23 patients who could not bear inspiration breath holding in examination of cholangiopancreatography underwent MRI scan with navigator echo technique,during which patients were asked to breathe peacefully and naturally.Thick-slice fast spin echo T2WI series and thin-slice half-fourier T2WI series were used,which were followed by total biliary tract three-dimension reconstruction based on thin-slice half-fourier T2WI series.Results：Biliary tract of 19 patients were optimally displayed while that of another 4 patients appeared constructed defect because of breath instability without diagnosis affected.Conclusion：With the application of MRI navigator echo technique,biliary tract can be optimally displayed even in patients who cannot match the breath holding,which was helpful to indication expansion and clinical treatment.

关 键 词：胆道水成像 导航回波 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R322.4[医药卫生—诊断学]