How does the VENDYS method compare to Doppler ultrasound flow velocity measurement?
A8. Our studies have demonstrated a direct relationship between VENDYS parameters and flow velocity changes in the radial and ulnar arteries at the wrist level. In most circumstances, fingertip temperature changes appeared to reflect changes in Doppler blood flow velocities, but with dampened amplitudes as well as lower noise. Unlike Doppler ultrasound, which is reliant on proper probe placement and handling by the operator, VENDYS temperature recording is automated and does not require probe handling. Our studies have also shown a disparity between Doppler velocity measurements and VENDYS parameters when the fingertip temperature approaches (>35C) body core temperature (37C).
