A peripheral arterial flow obstruction detection system for providing a predictive diagnosis correlating to the diagnosis peripheral arterial disease. The system includes a host computer and a sensor used to detect and measure a physiological signal from a subject’s finger or toe, such as the measurement of a signal using photoplethysmography using a PPG sensor. Sensor data is processed and filtered before being used to calculate a number of time-domain and frequency-domain calculations corresponding to the signal waveform. The calculations are used in a predictive model using a multi-faceted algorithm to provide a predictive diagnosis that is displayed on an indicator such as a monitor.本發明揭示一種用於提供與診斷周邊動脈疾病有關之一預測性診斷之周邊動脈血流阻塞偵測系統。該系統包含一主電腦及一感測器,該感測器用於偵測且量測來自一受測者之手指或腳趾之一生理信號,諸如使用光體積測量法(其使用一PPG感測器)之一信號量測。感測器資料在用於計算對應於信號波形之諸多時域及頻域計算結果之前被處理且過濾。該等計算結果被用於使用一多面演算法之一預測模式中,以提供顯示於一指示器(諸如一監視器)上之一預測性診斷。110‧‧‧主電腦120‧‧‧殼體125‧‧‧USB電纜130‧‧‧食指135‧‧‧左手
