Patent ID: 8275450

Claim:
A method of measuring blood velocity, comprising the steps of: obtaining a first velocity image from multipoint dynamic scattering by illuminating a selected tissue surface for a first exposure time at a selected cardiac cycle point of a first cardiac cycle; obtaining a second velocity image from multipoint dynamic scattering by illuminating the selected tissue surface for a second exposure time at the selected cardiac cycle point of a second cardiac cycle; computing a first average intensity of a first pixel block at a first predetermined location of the first velocity image and a second average intensity of a second pixel block at a second predetermined location of the second velocity image; identifying mid-range velocities of the first and second pixel blocks; computing an optimal optical coherence parameter based on the mid-range velocity of the first pixel block and the mid-range velocity of the second pixel block; and iteratively re-computing the first velocity image and the second velocity image using the optimal optical coherence parameter.