使用肝脏表面和血管进行基于RANSAC的全球3DUS到CT/MR刚性注册
Tsubasa Goto1, Riki Igarashi2, Iku Cho2
1Medical Systems Research and Development Center, Fujifilm Corporation, 6-15-6 Minami-aoyama, Minato-ku, Tokyo, 107-0062, Japan. tsubasa.goto@fujifilm.com.
International journal of computer assisted radiology and surgery
|August 21, 2025
概括
这项研究引入了一种独立于超声波扫描位置的3D-3D自动注册方法,用于肝融合成像. 这项技术提高了医生和超声波专家的工作流程的效率.
科学领域:
- 医学成像
- 图像的注册
- 计算解剖学
背景情况:
- 融合成像将超声波 (US) 与CT/MR相结合,以增强可视化.
- 准确的初始注册至关重要,但由于美国探测器的位置变化,
- 目前的方法缺乏对所有美国扫描角度的自动注册的标准化方法.
研究的目的:
- 为肝脏融合成像开发一种自动,位置独立的全球硬体3D-3D记录技术.
- 克服手动注册的局限性并提高工作流程的效率.
- 创建一个可适应各种超声波采集几何形状的强大方法.
主要方法:
- 在US和CT/MR图像中利用深度学习对肝脏和血管 (门脉,肝血管) 进行细分.
- 提取肝脏表面和血管中心线的点云,用于标志性识别.
- 采用基于RANSAC的点云注册,并包含速度和稳定性的限制.
主要成果:
- 在80名患者的定量评估中,在肋间间,肋下和腹膜视图中显示出注册的准确性.
- 平均记录误差为7.3±3.2毫米 (肋间间),9.3±3.7毫米 (肋下) 和8.4±3.9毫米 (腹膜).
- 这种方法无论超声波扫描位置如何,都证明有效.
结论:
- 拟议的全球刚性注册技术可自动化复杂的肝融合成像手动注册.
- 显著提高医生和超声波工作流程的效率.
- 提供程序前规划和程序内指导的可靠和自动化解决方案.
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