LASER DOPPLER FLOWMETRY
Ø Non invasive , electro optical technique , allows for semiquantitative recording for blood flow
Ø Incident laser beam of known wavelength is directed through crown of tooth and Moving red blood cells cause frequency of laser beam to be shifted & some light to be back scattered out of tooth
Ø Reflected light is detected by photocell on tooth surface the output of which is proportional to the number & velocity on moving red blood cells
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