自由呼吸的三维MR胆道管细胞造影使用中心k空间编码 改善胆囊可视化:一项前性研究
Junya Tsuzaki1, Taiki Nozaki1,2, Daiki Ito3,4
1Department of Radiology, Keio University School of Medicine, Tokyo, Japan.
概括
与传统的MRCP相比,MRCP-CORE是一种新的自由呼吸MRI技术,显著改善了胆囊可视化. 这种新的方法为增强诊断成像提供了一种强大的替代呼吸技术.
科学领域:
- 放射学和医学成像学 医学成像学
- 胃肠病学 胃肠病学
- 生物医学工程 生物医学工程
背景情况:
- 磁共振胆血管细胞造影 (MRCP) 可以通过由于缩胆汁而导致的信号损失来限制.
- 梯度和旋转回声 (GRASE) MRCP 改善了信号,但需要屏住呼吸.
- 开发自由呼吸的MRCP技术对于患者的舒适性和图像质量至关重要.
研究的目的:
- 开发和评估MRCP与中心顺序编码 (MRCP-CORE),一个新的自由呼吸序列.
- 评估MRCP-CORE可视化胆囊的能力与传统和GRASE MRCP相比.
- 为了研究胆汁度对不同MRCP序列的胆囊可见性的影响.
主要方法:
- 在3T系统上对100名患者进行三种MRCP序列 (MRCP-CORE,常规MRCP,GRASE MRCP) 的前性研究.
- 独立的放射科医生对解剖结构可见性,文物和整体图像质量的评估.
- 定量测量SNR,对比度与噪声比率和对比度;使用弗里德曼和乔恩希尔-特普斯特拉测试进行统计分析.
主要成果:
- 与传统和草地MRCP相比,MRCP-CORE的信号噪声比率 (SNR) 显著更高 (20.9对17.3对15.8;P<0.001).
- 胆囊可见度在MRCP-CORE与传统MRCP (P = 0.02) 相比显著改善,与GRASEMRCP (P = 1.00) 相比.
- 胆量度影响了传统MRCP (P < 0.001) 中胆囊可见度,但在MRCP-CORE (P = 0.12) 或GRASE MRCP (P = 0.43) 中没有影响.
结论:
- 与传统的MRCP相比,MRCP-CORE增强了胆囊的描绘.
- MRCP-CORE提供了一个强大的自由呼吸的替代品,以保持呼吸GRASE MRCP.
- 新的序列克服了与MRCP.中的胆汁度相关的限制.
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