基于虚拟源的apodization用于分歧波成像:一个实验研究
Zahraa Alzein1, Hervé Liebgott2, Marco Crocco3
1University of Genoa, Italy.
Ultrasonic imaging
|February 26, 2026
概括
这项研究引入了用于分离波成像 (DWI) 的复合面具,一种超快超声波. 该方法优化了传输apodization重量,提高了B模式图像质量,而不会牺牲医疗诊断中的实时性能.
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
- 信号处理 信号处理
背景情况:
- 超快速成像技术,包括分离波成像 (DWI),使得高率用于先进的医学诊断,如多普勒成像和剪切波弹性成像.
- 在超快速成像中,由于连贯复合过程中合成光束的形成,传统的传输apodization是不可行的.
- 优化DWI的传输apodization重量,与平面波成像 (PWI) 不同,仍然是一个未经探索的领域.
研究的目的:
- 介绍以前开发的封闭形式方法的实时实现,用于将合成孔径成像 (SAI) 的apodization重量映射到DWI的复合面罩上.
- 为了验证这种复合面具方法在各种虚拟源 (VS) 配置和超声波阵列几何结构中的有效性.
主要方法:
- 一种封闭形式的方法被适用于将SAI的apodization重量映射到DWI的复合阶段重量,称为复合面具.
- 复合面具方法在Verasonics超声波扫描仪上实时实现.
- 验证是使用线性,曲线性和倾斜的虚拟源分布与线性和形数组进行的.
主要成果:
- 实时实现成功地将复合面具应用于所有测试的虚拟源配置.
- 实验结果显示,线性和形数组的B模式图像质量显著改善.
- 复合面具方法并没有影响超快速成像系统的实时性能.
结论:
- 复合面具方法提供了一种有效的手段,以优化在分离波成像中传输apodization.
- 这种技术可以在超快超声波诊断中提高图像质量,而不会降低性能.
- 这种方法是多功能性的,适用于各种虚拟源安排和数组类型.
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