Das Shatabdi, Afsharan Hadi, Dwivedi Girish, Arrow Coen, Kavehei Omid
School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales, Australia.
Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia, Australia.
R Soc Open Sci. 2025 Jun 25;12(6):242231. doi: 10.1098/rsos.242231. eCollection 2025 Jun.
The jugular venous pulse (JVP) reflects right atrial pressure and provides diagnostic insight into cardiovascular and pulmonary health. However, reliable assessment remains difficult due to neck adiposity, anatomical variability and suboptimal positioning. Although central venous catheterization is the gold standard, its invasive nature restricts routine or long-term use. This study introduces a non-invasive method for JVP estimation using a 60 GHz frequency-modulated continuous wave (FMCW) radar. The system captures venous pulsations at the skin surface and applies eigenbeamforming to enhance signal-to-noise ratio and pulse clarity. Radar parameters were optimized for signal fidelity and validated through morphological comparison with simultaneously recorded photoplethysmography (PPG) signals. Additionally, we compared radar-derived JVP signals with previously recorded catheterization data from a patient with early-stage heart failure to assess clinical relevance. Signal localization was successfully achieved within a direction-of-arrival (DoA) range of to , demonstrating the radar's precision. While the selected parameters consistently yielded good performance in our set-up, individual anatomical differences may require subject-specific calibration. These findings support the potential of 60 GHz FMCW radar for contactless JVP monitoring, with promising implications for early detection and remote management of heart failure.
颈静脉搏动（JVP）反映右心房压力，并为心血管和肺部健康提供诊断依据。然而，由于颈部肥胖、解剖结构变异和体位欠佳，可靠的评估仍然困难。尽管中心静脉导管插入术是金标准，但其侵入性限制了常规或长期使用。本研究介绍了一种使用60GHz调频连续波（FMCW）雷达估计JVP的非侵入性方法。该系统在皮肤表面捕获静脉搏动，并应用特征波束形成来提高信噪比和脉冲清晰度。对雷达参数进行了优化以保证信号保真度，并通过与同时记录的光电容积脉搏波描记法（PPG）信号进行形态学比较进行了验证。此外，我们将雷达衍生的JVP信号与一名早期心力衰竭患者先前记录的导管插入术数据进行比较，以评估临床相关性。在到达方向（DoA）范围为 至 内成功实现了信号定位，证明了雷达的精度。虽然所选参数在我们的设置中始终产生良好的性能，但个体解剖差异可能需要针对特定受试者进行校准。这些发现支持了60GHz FMCW雷达用于非接触式JVP监测的潜力，对心力衰竭的早期检测和远程管理具有潜在意义。
