Carotid脉冲波速率估计基于事件波使用连贯平面波复合超声波
Li Xiong1, Yufeng Zhang1,2, Xiaoxu Wang2
1Department of Electronic Engineering, Information School, Yunnan University, Kunming, Yunnan 650091, People's Republic of China.
Physics in medicine and biology
|May 2, 2025
概括
一种新的事件波超声波 (IWCU) 方法准确地估计了局部脉冲波速度 (PWV),改善了心血管疾病风险评估. 这种技术可以提高动脉弹性测量,以便更早诊断.
科学领域:
- 心血管超声波是什么意思
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 当地脉冲波速度 (PWV) 对于评估动脉弹性和心血管疾病风险至关重要.
- 准确的PWV估计有助于早期诊断和风险分层.
- 现有的PWV估计方法可能受到反射波和准确性问题的限制.
研究的目的:
- 提出和评估一种新的事件波超声波 (IWCU) 方法,以改进本地PWV估计.
- 为了抑制脉冲波 (PW) 信号中的反射波,使用连贯平面波复合.
- 为了提高基于过境时间 (TT) 的本地PWV估计的性能.
主要方法:
- 收集了超声波无线电频率回声信号并进行了连贯的复合.
- 使用凯尔文-沃伊格特模型计算PW和血液流速以估计事件波 (IW).
- 估计的时间延迟 (TDs) 的IWs和随后计算的本地PWV.
- 使用规范化根平均平方误差 (NRMSEs),相对误差,布兰德-阿尔特曼分析和模拟,体外和体内变化系数 (CV) 进行定量评估性能.
主要成果:
- 与现有方法相比,IWCU方法在本地PWV估计中表现出更高的准确性,可重复性和更低的变异性.
- 对TD和局部PWV的NRMSEs的平均值和标准偏差 (MSD) 分别为11.78 ± 0.52%和4.10 ± 2.25%.
- 平均相对误差和CV分别为6.10%和12.56%,表明性能强.
结论:
- 拟议的IWCU方法为基于过境时间的本地PWV估计提供了更高的准确性.
- 这种技术显示出显著的潜力,可以增强动脉硬的临床诊断.
- IWCU为评估区域动脉弹性和心血管健康提供了更可靠的工具.
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