Division of Cardiology, Department of Internal medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea.
Department of Electronics and Computer Engineering, College of Engineering, Hanyang University, Seoul, Republic of Korea.
Sci Rep. 2018 Aug 29;8(1):13053. doi: 10.1038/s41598-018-31411-8.
We discovered that impulse-radio ultra-wideband (IR-UWB) radar could recognize cardiac motions in a non-contact fashion. Therefore, we measured the heart rate (HR) and rhythms using an IR-UWB radar sensor and evaluated the validity and reliability of the measurements in comparison to electrocardiography. The heart beats were measured in 6 healthy volunteers (18 samples) with normal sinus rhythm (NSR) and 16 patients (36 samples) with atrial fibrillation (AF) using both an IR-UWB radar sensor and electrocardiography simultaneously. The participants hold their breath for 20 seconds during the data acquisition. In subjects with NSR, there was excellent agreement of HR (intraclass correlation coefficient [ICC] 0.856), average R-R interval (ICC 0.997) and individual R-R intervals between the two methods (ICC 0.803). In subjects with AF, HR (ICC 0.871) and average R-R interval (ICC 0.925) from the radar sensor also agreed well with those from electrocardiography, though there was a small disagreement in the individual R-R intervals between the two methods (ICC 0.697). The rhythms computed by the signal-processing algorithm showed good agreement between the two methods (Cohen's Kappa 0.922). The IR-UWB radar sensor is precise and accurate for assessing HR and rhythms in a non-contact fashion.
我们发现，脉冲无线电超宽带（IR-UWB）雷达可以实现非接触式的心脏运动识别。因此，我们使用 IR-UWB 雷达传感器测量心率（HR）和节律，并将测量结果与心电图进行比较，评估其有效性和可靠性。我们同时使用 IR-UWB 雷达传感器和心电图对 6 名窦性心律（NSR）正常的健康志愿者（18 个样本）和 16 名患有心房颤动（AF）的患者（36 个样本）进行了心跳测量。参与者在数据采集过程中屏住呼吸 20 秒。在 NSR 受试者中，两种方法的 HR（组内相关系数 [ICC] 0.856）、平均 R-R 间期（ICC 0.997）和个体 R-R 间期均具有极好的一致性（ICC 0.803）。在 AF 受试者中，雷达传感器的 HR（ICC 0.871）和平均 R-R 间期（ICC 0.925）也与心电图的结果非常吻合，尽管两种方法的个体 R-R 间期存在较小的差异（ICC 0.697）。信号处理算法计算出的节律在两种方法之间具有良好的一致性（Cohen's Kappa 0.922）。IR-UWB 雷达传感器在非接触式评估 HR 和节律方面具有精确性和准确性。
