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半径可调节的环超声波传感器阵列,用于实时对大体积目标的3D成像

Ze Li¹, Yuchen Sun², Lei Li²

¹School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu, China; Department of Gastroenterology, Yixing People's Hospital, Yixing, Jiangsu, China.

Ultrasound in medicine & biology

|September 3, 2025

概括

这项研究引入了一种用于肢体成像的新型自由扫描3D超声波系统. 与CT扫描相比,该系统可实现高分辨率的骨形态3D重建,误差最小.

科学领域:

医学成像
生物医学工程
超声波技术

背景情况:

传统的二维超声波对像四肢这样的大身体部位有局限性.
挑战包括有限的扫描范围,骨干扰和注册困难.
三维 (3D) 超声波提供全面的空间信息,但需要先进的肢体成像系统.

研究的目的:

开发一个可自由扫描的大体部位的3D超声波成像系统.
实现肢体结构的实时高分辨率3D重建.
通过对比CT成像来评估系统的准确性.

主要方法:

一个自由扫描的3D超声波系统被开发出来.
它使用半径可调的环转换器阵列来实现适应性.
一个光学定位系统实时确定传感器的姿势,以估计姿势.

主要成果:

该系统实现了以次毫米分辨率的实时 (18fps) 重建.
与X射线CT相比,在人体四肢上的体内实验显示出较低的误差率.
骨和骨的二维切片面积错误分别为1. 33%和2. 63%,骨和骨的三维长度差异分别为0. 96%和0. 40%.

结论:

集成的环超声波阵列和光学定位系统可以快速,精确的3D重建大型目标,如四肢.
该系统准确地评估骨形态,通过对CT的低误差 (面积<2.7%,长度<1.0%) 进行验证.
这项技术在骨折诊断和监测中具有很强的临床应用潜力.

关键词:

骨细分自由扫描环转换器阵列三维超声成像

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