走向实时GPU实现与合成孔径技术的分离光束,用于曲线阵列的非线性光束成形
Lokesh Basavarajappa1, Rahul R2, R Tushar2
1Mehta family school of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, India.
Ultrasonic imaging
|December 29, 2025
概括
本研究介绍了一种GPU加速系统,用于增强超声波成像,使用合成传输孔径 (DBSAT) 的分离束和用曲线传感器的非线性束形状,提高图像质量和分辨率.
科学领域:
- 医疗成像医学成像
- 超声波技术 超声波技术 超声波技术
- 计算成像技术的成像
背景情况:
- 传统的超声波成像在焦点区域之外的图像质量有局限性.
- 合成发射孔径 (STA) 和非线性光束成型可以提高图像质量,但需要大量的计算能力.
- 实时,负担得起的系统和使用曲线传感器的STA成像尚未广泛普及.
研究的目的:
- 开发和评估基于GPU的,实时的,可负担的系统,用于曲线阵列超声波成像.
- 使用合成传输光圈技术 (DBSAT) 结合非线性光束成形来实现和评估分离光束.
- 探索使用曲线变频器进行STA成像的应用.
主要方法:
- 一个基于GPU的系统是使用NVIDIA GeForce RTX 3060 GPU开发的.
- 使用模仿组织的幻影与DBSAT和常规聚焦光束成形 (CFB) 序列获得实验数据.
- 过延迟乘法和总和 (FDMAS) 和延迟和总和 (DAS) 算法用于束形.
主要成果:
- 使用曲线传感器的DBSAT与FDMAS (DBSAT-FDMAS) 在虚拟源靠近传感器时,提高了图像质量.
- 减少接收元件的数量对图像质量的影响最小.
- 与具有相似执行时间的CFB-FDMAS相比,DBSAT32-FDMAS显示了增强的对比度和噪声比率 (CNR) 和概括的CNR (gCNR).
结论:
- 开发的基于GPU的DBSAT-FDMAS系统通过曲线变频器提供了增强的超声波图像质量.
- 这种方法为实时,负担得起的先进超声波成像提供了可行的解决方案.
- 可以进一步优化虚拟源定位和接收元件的使用情况.
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