Breath-held MR cholangiopancreatography with half-averaged single shot hybrid rapid acquisition with relaxation enhancement sequence: comparison of fast GRE and SE sequences.
Breath-held MR cholangiopancreatography with half-averaged single shot hybrid rapid acquisition with relaxation enhancement sequence: comparison of fast GRE and SE sequences.
复制标题
采用半平均单次混合快速采集和松弛增强序列的屏气 MR 胰胆管造影：快速 GRE 和 SE 序列的比较。
DOI：
10.1097/00004728-199609000-00022
复制
发表时间：
1996
影响因子：
1.3
通讯作者：
Yoshiyuki Mizutani
中科院分区：
文献类型：
--
作者：
Tomoaki Ichikawa;T. Nitatori;Junichi Hachiya;Yoshiyuki Mizutani
目的
我们的目标是通过将半平均单次激发混合快速采集与弛豫增强（单次激发混合RARE）序列与其他两种MRCP序列（快速SE（FSE）和对比增强傅立叶采集稳态技术（CE-FAST））进行比较，确定其是否可以改善MR胰胆管造影（MRCP）的图像质量、胆管清晰度、信号强度比（SIR）和对比噪声比（CNR）。
方法
对46例患者（10例志愿者，36例胰胆疾病患者）进行了三种序列的MRCP检查。对总体图像质量和胆管清晰度进行分级。测量SIR和CNR。
结果
所有46例单次激发混合RARE患者（100%）、38/46例FSE患者（83%）和5/46例CE-FAST患者（11%）的总体图像质量均被评为优或良。在统计学上，单发混合RARE的导管显示最好。三种序列中，FSE的SIR最高，而单次激发杂交RARE的CNR最高。
结论
与FSE和CE-FAST相比，单次激发混合RARE可提供始终更高质量的MRCP，因为单次激发混合RARE的序列图像可最大限度地减少呼吸、肠道和心脏运动伪影。
PURPOSE
Our goal was to determine whether half-averaged single shot hybrid rapid acquisition with relaxation enhancement (single shot hybrid RARE) sequence can improve image quality, duct conspicuity, signal intensity ratio (SIR), and contrast-to-noise ratio (CNR) of MR cholangiopancreatography (MRCP) by comparing it with two other MRCP sequences: fast SE (FSE) and contrast-enhanced Fourier-acquired steady-state technique (CE-FAST).
METHOD
MRCP with three sequences was obtained in 46 people (10 volunteers, 36 patients with pancreatobiliary disease). Overall image quality and duct conspicuity were graded. SIR and CNR were also measured.
RESULTS
Overall image quality was graded excellent or good in all 46 patients (100%) with single shot hybrid RARE, in 38 of 46 (83%) with FSE, and in 5 of 46 (11%) with CE-FAST. Duct conspicuity was the best in single shot hybrid RARE statistically. SIR was the highest in FSE, while CNR was highest statistically in single shot hybrid RARE of three sequences.
CONCLUSION
Single shot hybrid RARE can provide consistently higher quality MRCP than FSE and CE-FAST because sequential images by single shot hybrid RARE minimize respiratory, bowel, and cardiac motion artifacts.