High-spatial-resolution three-dimensional MR cholangiography using a high-sampling-efficiency technique (SPACE) at 3T: Comparison with the conventional constant flip angle sequence in healthy volunteers
High-spatial-resolution three-dimensional MR cholangiography using a high-sampling-efficiency technique (SPACE) at 3T: Comparison with the conventional constant flip angle sequence in healthy volunteers
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DOI：
10.1002/jmri.21484
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发表时间：
2008-09-01
影响因子：
4.4
通讯作者：
Togashi, Kaori
中科院分区：
文献类型：
--
作者：
Arizono, Shigeki;Isoda, Hiroyoshi;Togashi, Kaori
目的：与 3T 下的传统恒定翻转角 (FA) 序列相比，评估采用高采样效率技术的高空间分辨率三维磁共振胆管造影 (MRC) 的图像质量（使用不同的（唇角演变 [SPACE]）应用优化对比度来实现采样完美。材料和方法：在 3T MR 设备上对 18 名志愿者进行了检查：使用三种不同的自由呼吸三维磁共振胆管造影进行的 MRC 成像T2 加权涡轮自旋回波 (TSE) 序列：1) SPACE（空间分辨率。1.1 x 1.0 x 0.84 mm），2) 恒定 FA (1.1 x 1.0 x 0.84 mm)，3) 更高分辨率的 SPACE（SPACE HR；1.0 x 0.9 x 0.644 mm）。使用五点量表来比较胆管第三分支（B2、B6 和 B8）的整体图像质量和可视化。还比较了胆囊管插入和可见胆管最高阶的描述。结果：使用 SPACE 和 SPACE HR 序列的 MRC 产生的整体图像质量明显优于恒定 FA 序列。在管道可见性的所有分析中。 SPACE 和 SPACE HR 序列显示出比恒定 FA 序列更高的分数。结论：3T 下 SPACE 的高分辨率三维 MRC 可以对胆道进行高质量成像，并且能够描绘健康志愿者中非扩张的肝内胆管 (IHBD)。
Purpose: To evaluate the image quality of high-spatial-resolution three-dimensional magnetic resonance cholangiography (MRC) with a high-sampling-efficiency technique (sampling perfection with application optimized contrasts using different (lip angle evolutions [SPACE]) in comparison with a conventional constant flip angle (FA) sequence at 3T.Materials and Methods: Eighteen volunteers were examined on a 3T MR unit: using MRC imaging performed with three different free-breathing three-dimensional T2-weighted turbo spin-echo (TSE) sequences: 1) SPACE (spatial resolution. 1.1 x 1.0 x 0.84 mm), 2) constant FA (1.1 x 1.0 x 0.84 mm), and 3) SPACE at a higher resolution (SPACE HR; 1.0 x 0.9 x 0.644 mm). A five-point scale was used to compare overall image quality and visualization of the third branches of the bile duct (B2, B6, and B8). Depictions of cystic duct insertion and the highest order of bile duct visible were also compared.Results: MRC with SPACE and SPACE HR sequences produced significantly better overall image quality than the constant FA sequence. In all analyses of duct visibility. SPACE and SPACE HR sequences showed higher scores than the constant FA sequence.Conclusion: High-resolution three-dimensional MRC with SPACE at 3T allows high-quality imaging of the biliary tract, and has the ability to depict nondilated intrahepatic bile ducts (IHBD) in healthy volunteers.