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Updated: Sep 17, 2025
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用跨频谱方法对行列数组进行实时3D被动声学映射
概括
排列列列阵列 (RCAs) 允许实时3D被动声学映射 (PAM) 用于聚焦超声 (FUS) 疗法. 这种方法增强了洞穴监测,通过检测非目标事件来提高治疗的安全性和有效性.
科学领域:
- 医疗成像医学成像
- 声学 声学 在声学上
- 生物医学工程 生物医学工程
背景情况:
- 洞穴的实时3D监测对于安全有效的聚焦超声波 (FUS) 疗法至关重要.
- 目前的方法很难在2D成像平面之外检测目标外的空心事件.
- 需要进行高级监测,以最大限度地降低FUS治疗的风险.
研究的目的:
- 引入和验证使用行列数组 (RCAs) 的新型3D被动声学映射 (PAM) 方法.
- 为了证明将RCA-PAM集成到商业超声波扫描仪中的可行性,以加强洞穴监测.
- 为了提高基于空腔的FUS治疗的安全性和精度.
主要方法:
- 提出了RCA-PAM方法,用于使用角光谱 (AS) 反向传播的三维图像形成和波场.
- 集成的AS与双倍apodization与交叉相关性 (AS-DAX) 减少图像文物.
- 实现了高速体积重建 (超过40体积/秒) 以获得详细的3D PAM.
主要成果:
- RCA-PAM实现了0.04±0.07毫米的源定位错误.
- 重建的图像质量与相同光圈大小的矩阵数组相比较.
- 在临床前瘤模型中展示了与B模式成像的无集成,用于实时监测.
结论:
- 行列阵列为FUS治疗中的3D被动声学映射提供了强大且易于集成的解决方案.
- RCA-PAM显著提高了实时监测化活动的能力.
- 这项技术有望最大限度地降低治疗风险,并改善FUS应用的结果.
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