对全身动态PET和参数成像的间传运动校正
Xueqi Guo1, Jing Wu2, Ming-Kai Chen3
1Department of Biomedical Engineering, Yale University, New Haven, CT, 06511, USA.
IEEE transactions on radiation and plasma medical sciences
|October 16, 2023
概括
全身动态PET成像从运动校正中受益. 应用非刚性注册可以减少错误并提高代谢测量的准确性,从而有可能提高癌症检测.
科学领域:
- 核医学是一种核医学.
- 医疗成像医学成像
- 放射化学 放射化学是指辐射化学.
背景情况:
- 使用连续床运动 (CBM) 的全身动态氧葡萄糖-正子发射断层扫描 (FDG-PET) 对于代谢评估非常有价值.
- 由于患者的运动而导致的跨通道错位可能会损害CBM PET扫描中的定量准确性.
研究的目的:
- 实施和评估一种非刚性注册方法,用于整体动态FDG-PET成像中纠正通行间运动.
- 评估运动校正对参数量化和瘤歧视能力的影响.
主要方法:
- 在27名受试者身上进行了90分钟的全身动态FDG CBM PET扫描.
- 通过使用多分辨率,B-spline自由形式的非刚性图像注册进行了间传动的校正.
- 使用帕特拉克分析生成参数图像,并量化了合适错误.
主要成果:
- 非刚性注册成功地减少了参数图像 (斜率K和截面V) 之间的空间错位.
- 在运动校正后,整体身体,头部和感兴趣区域 (ROI) 的正常装配错误 (NFE) 显著减少.
- 超代谢ROI的视觉性能有所改善,恶性瘤歧视的曲线下面面积 (AUC) 增加.
结论:
- 非刚性注册在全身动态FDG-PET中有效进行跨度运动校正.
- 运动校正提高了定量准确性,并增强了瘤应用的诊断潜力.
- 这种技术为完善全身PET成像分析提供了一个有前途的方法.
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