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三维梯度旋回回声序列 (GRASE) 在磁共振胆血管细胞造影中的应用

Xiao-Yu Chen¹, He-Ping Deng¹, Xue-Gang Yang¹

¹Department of Radiology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Center, Sichuan Cancer Hospital and Institute, University of Electronic Science and Technology of China, Chengdu, 610041, China.

Scientific reports

|January 16, 2026

概括

与3D NT-TSE相比,3D BH-GRASE MRCP提供更快的成像和更好的关键胆道结构的可视化. 结合这两种序列可以提高胰腺和胆道疾病诊断的整体图像质量.

科学领域:

放射学和成像学放射学和成像学
医学物理医学物理

背景情况:

磁共振胆血管脑图 (MRCP) 对于诊断胰腺和胆道疾病至关重要.
传统的3D Non-breath-hold Turbo Spin Echo (3D NT-TSE) 序列可能会很长,容易受到运动工件的影响.

研究的目的:

评估MRCP.中三维喘息梯度旋转回声 (3D BH-GRASE) 序列的临床实用性.
将3D BH-GRASE与3D NT-TSE在成像速度,图像质量和胰腺和胆道病理的诊断准确性方面进行比较.

主要方法:

在56名胰腺和胆道疾病患者身上进行了MRCP,使用了3D BH-GRASE和3D NT-TSE序列.
采集时间,信号与噪声比率 (SNR),对比率 (CR),对比与噪声比率 (CNR) 和图像质量被统计分析.
图像质量被评估为整体质量,文物和特定胆道和胰腺管道的可视化.

主要成果:

与3D NT-TSE (238.12 ± 43.85秒) 相比,3D BH-GRASE显著减少了平均获取时间至16.4秒 (p < 0.05).
3D BH-GRASE显示出优越的整体图像质量,更少的文物,以及更好地可视化普通胆道,肝管和胆囊/囊管 (p <0.05).
然而,3D BH-GRASE与3D NT-TSE (p <0.05) 相比,显示左/右次肝管的可视化较差,尽管胰腺管的可视化可比.
结合3D BH-GRASE和3D NT-TSE序列,比单独使用任何一个序列的图像质量得分要高得多 (p < 0.05).

结论:

3D BH-GRASE是一种有价值的MRCP技术,可以显著减少扫描时间,并改善主要胆道结构的可视化,减轻3D NT-TSE固有的运动工件.
虽然3D BH-GRASE在某些方面表现出色,但它在可视化较小的肝内通道方面存在局限性.
使用3D BH-GRASE作为与3D NT-TSE一起的补充序列可以提高评估胰腺和胆道疾病的诊断信心.

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