在单平面波超声成像中,无监督光束成形具有优化的连贯性损失,以抑制杂乱
Seongbin Hwang1, Hyunwoo Cho2, Taejin Kim3
1Department of Artificial Intelligence, The Catholic University of Korea, Bucheon 14662, Republic of Korea.
Diagnostics (Basel, Switzerland)
|January 10, 2026
概括
这项研究引入了一种优化的无监督光束成形方法,以减少高速超声波成像中的杂乱工件. 新方法显著提高了实时应用的图像质量和诊断精度.
科学领域:
- 医疗成像医学成像
- 超声波技术 超声波技术
- 信号处理 信号处理
背景情况:
- 单平面波超声成像 (SPWI) 为实时应用提供高采集速度 (>1000 Hz).
- SPWI受到诸如多路径回声,降低图像对比度和可靠性等杂乱文物的限制.
- 现有的方法很难有效地减轻这些文物,同时保持时间分辨率.
研究的目的:
- 开发一种无监督的光束成形方法,以抑制SPWI中的反响工件.
- 为了提高实时超声波的图像对比度和诊断可靠性.
- 引入一种可适应的方法来优化连贯性损失计算.
主要方法:
- 提出了一种无监督光束成形方法,优化了深度连贯性损失 (UBF-DCLopt).
- 实现了基于平面波数据的框架间关系的自适应信号连贯性计算.
- 利用基于物理学的标准,以适应性地确定最佳的平面波框架来计算连贯性损失,考虑转向角度和脉冲特征.
- 通过模拟,幻象研究和体内数据验证了该方法.
主要成果:
- UBF-DCLopt在对比度与噪声比率 (CNR) 中表现出显著的改善.
- 与固定深度连贯性损失方法 (UBF-DCL) 相比,在幻象实验中获得了22%的CNR改善,在体内研究中获得了32%的CNR改善.
- 在保持高时空分辨率的同时,有效地抑制了反响工件.
结论:
- 基于物理的无监督方法有效地抑制了SPWI中的反响工件.
- 该方法提高了实时超声波成像中的诊断准确性.
- UBF-DCLopt为提高高速超声波成像质量提供了一个有前途的解决方案.
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