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多拍摄梯度回声平面成像序列在非对比的冠状动脉磁共振血管学中
Jiajia Zhu1, Wenjing Li1, Guangming Lu2
1Department of Radiology, Geriatric Hospital of Nanjing Medical University, Nanjing, China.
多拍摄梯度回声平面成像 (MSG-EPI) 序列显著减少了非增强冠状动脉磁共振血管学 (CMRA) 的获取时间. 这种方法为评估冠状动脉疾病 (CAD) 提供了足够的图像质量.
科学领域:
- 心血管成像 - 心血管成像
- 磁共振成像技术 磁共振成像技术
背景情况:
- 非增强冠状动脉磁共振血管造影 (CMRA) 对于诊断冠状动脉疾病 (CAD) 至关重要.
- 在CMRA中优化采集时间和图像质量仍然是一个持续的挑战.
研究的目的:
- 在非增强型CMRA中评估多拍摄梯度回声平面成像 (MSG-EPI) 序列的可行性和诊断性能.
- 为了将MSG-EPI与传统的三维平衡轮场回声 (3D BTFE) 序列进行比较.
主要方法:
- 一项涉及72名接受CMRA.患者的比较研究.
- 评估采集时间,主观图像分数,信号与噪声比 (SNR) 和对比与噪声比 (CNR).
- 用计算机断层扫描血管造影 (CTA) 作为参考标准评估CAD的诊断疗效,采用kappa统计数据和麦克纳马的测试.
主要成果:
- 与3DBTFE (558.10 ± 102.90秒) 相比,MSG-EPI的采集时间显著缩短 (17.21 ± 1.08秒) (P < 0.001).
- 对于大多数冠状动脉段,没有观察到主观图像质量或SNR的显著差异.
- 虽然3D BTFE显示出更高的CNR,但MSG-EPI实现了对CAD的实质性诊断性能 (kappa = 0.785,精度 = 84.6%).
结论:
- MSG-EPI是用于非增强型CMRA的可行技术,可大幅缩短扫描时间.
- 该序列为评估冠状动脉疾病提供了足够的图像质量.
- MSG-EPI为更快的CMRA获取提供了一个有希望的替代方案.
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