Retracted: Photoplethysmogram Technique to Characterize the Carotid-to-toe Pulse Duration during Different Human-postures
S. Abdalla & N. Al-Aama · Journal of Advances in Medicine and Medical Research · 2017
Photoplethysmogram, including Pulse Transit Time (PTT), technique were used to detect blood volume changes in human carotid-to-toe. The main problem is how to evaluate the PTT values continuously from the subject with accurate readings. Monitoring PTT values of a person is useful...