HASTE序列磁共振胰胆管成像:单层和多层法成像技术比较研究  

Half-Fourier Acquisition Single-shot Turbo Spin-echo (HASTE) Magnetic Resonance Cholangiopancreatography: Comparison Between Single-slice Acquisition Technique and Sequential Multislice Acquisition Technique

作　　者：吴戈 曾庆玉[1] 班润义[1] 霍建伟[1] 罗凌飞[1] 王成纲 尹晓明 李宝平[1] 

机构地区：[1]北京市煤炭总医院影像科,北京100028

出　　处：《实用放射学杂志》2004年第3期241-244,共4页Journal of Practical Radiology

摘　　要：目的　采用HASTE磁共振成像技术进行磁共振胰胆管成像并比较 2种不同成像方法优劣。方法　对 66例临床怀疑胰胆管病变患者进行磁共振检查 ,所有病例全部行胰胆系常规SE及梯度序列矢冠轴位相扫描和HASTE序列 2种不同方法 (多层薄块采集MIP重建法和连续单层厚块采集法 )MRCP成像。对 2种不同HASTE序列显示胰胆管病变的优缺点进行比较。结果　 66例中共有 44例确诊为胰胆系病变 ,阳性率 67% ( 4 4/ 66)。采用单层法 66例 ( 10 0 % )全部达到诊断标准 ;多层法有 5 8例 ( 88% )达到诊断标准。单层法采集空间分辨率较高 ,且采集时间短 ,但受血管伪影影响较明显。多层法采集密度分辨率高 ,但运动伪影明显。Objective Comparative study of two acquisition techniques of HASTE-MRCP, to optimize the best MRI examination method for diagnose the biliary tract diseases.Methods 66 patients(45 men and 21 women, mean age 52.7) were studied with a 1.0T super conductive unit(Magnetom Impact; Siemens, Germany) that used a body coil. Two acquisition techniques of HASTE- MRCP were used for all patients,that is single-slice acquisition with a slice thickness of 80 mm(single-slice technique) and sequential multislice acquisition with a 8 mm thickness(13 sections), followed by maximum intensity projection(MIP) reconstruction. The MRCP images were evaluated by two radiologists respectively.Results In our study, HASTE-MRCP could clearly depiect the morphological appearances of biliary diseases. The single-slice acquisition technique is better than sequential multislice acquisition technique,which postive rate were 100% and 88% respectirely.Single-slice acquisition have a high spatial resolution,and shot aquisition time,but more vessel artifact.Sequential multishce acquisition technique have high density resoultion,but more moving artifact.Conclusion The single-slice acquisition of HASTE-MRCP is an excellent technique in the diagnosis of biliary tract diseases.

关 键 词：HASTE序列磁共振 胰胆管成像 单层 多层法 成像技术 

分 类 号：R445.2[医药卫生—影像医学与核医学]