METHODS AND SYSTEMS FOR MULTI-DIMENSIONAL PHOTOPLETHYSMOGRAPHY (PPG)

摘要

Methods and apparatus for acquiring a noninvasive multi-dimensional photoplethysmogram (PPG) are provided. The apparatus comprises a plurality of light emitting diodes (LEDs), wherein a first LED of the plurality of LEDs is a first member of the group consisting of a green LED, a red LED, and an infrared LED and a second LED of the plurality of LEDs is a second member of a group consisting of a green LED, a red LED, and an infrared LED, wherein the plurality of LEDs are configured to illuminate a tissue, at least one sensor configured to sense light reflected from the tissue in response to illumination of the tissue by the plurality of LEDs, and at least one processor programmed to determine a multi-dimensional photoplethysmogram based, at least in part, on the sensed reflected light.