Non-contact Pulse Wave Velocity Assessment Using Optical Methods

摘要: The clinical relevance of pulse wave velocity (PWV), as an indicator cardiac risk associated to arterial stiffness, has gained over the last years. Optic sensors are attractive instrumental solution for this type measurement due their truly non-contact operation capability, which potential interference free measurement. nature optically originated signals, however, poses new challenges designer, either at probe design level signal processing required extract timing information that yields PWV. In work we describe construction two prototype optical probes and discuss evaluation using three algorithms transit time (PTT) evaluation. Results, obtained in a dedicated test bench, is also described, demonstrate possibility measuring times short 1ms with less than 1% error.