Photoplethysmographic (PPG) technology is a morden photoelectronic method to monitor pulse wave. Nowadays, PPG pulse detection has been widely used with the mer

2022年3月1日 · Photoplethysmography (PPG) is a non-invasive method for measuring blood volume changes in a microvascular bed of the skin based on optical properties, such as absorption, scattering, and transmission properties of human body composition under a specific light wavelength (Challoner, 1979).

Crest time is the time from the foot of the PPG waveform to its peak; see Fig. (14b). Alty et al [63] proved that the crest time is a useful feature for cardiovascular disease classification.

2022年3月1日 · Based on 118 articles, we identified four main topics of enabling PPG: (A) PPG waveform, (B) PPG features and clinical applications including basic features based on the original PPG...

2 天之前 · GAM 分析进一步揭示了参数与年龄的非线性关系。 大多数 PPG 参数与年龄呈现线性或近似线性关系，但一些参数如所有评分参数在 40 岁后呈现明显的非线性下降趋势，eLVET1 和 c - d incidence 参数呈现先上升后平稳的趋势，Crest Time 则表现出极端的非线性，有多个拐点。

Another tool used to assess the microcirculation in this study is photoplethysmography (PPG), which reflects the pulse waves in the arterioles and is widely used to evaluate blood circulation [28...

Abstract—Imaging photoplethysmography (iPPG) is used to remotely measure the blood volume pulse using a camera. Traditionally, it has been employed to estimate heart and respiratory rates, and recently blood pressure and oxygen saturation.

2015年8月29日 · Photoplethysmography (PPG) is a non-invasive optical technique that exploits the variation in light absorption due to blood volume changes in the vessels close to the skin during the cardiac cycle [1].

Acceleration plethysmograms (APGs) are obtained by taking the second derivative of photoplethysmograms (PPGs) and are noninvasive circulatory signals related to risk factors for atherosclerosis with age. There has been growing interest in the development of mobile devices to collect and analyze PPG single features for ambulatory health monitoring.

2022年8月15日 · In this paper, a robust algorithm is developed that primarily uses a novel combination of PPG-derivative, trigonometric area of the curve (TAOC), slope reversal and time-domain based lightweight methodologies to uncover …