CPC A61B 5/0261 (2013.01) [A61B 5/0285 (2013.01); G01F 1/66 (2013.01)] | 9 Claims |
1. A measurement apparatus, comprising:
a light source configured to emit at least partially coherent light;
a photodiode configured to:
receive the partially coherent light emitted from the light source by way of a measurement target; and
detect a signal proportional to the received partially coherent light; and
circuitry configured to:
perform an analog to digital conversion of the signal to generate a digital data;
extract a segment of the digital data;
obtain value of respective data points on the extracted segment of the digital data;
calculate, based on the extracted segment, a mean value of the digital data;
calculate a number of times the mean value and the value of the respective data points intersects; and
output a measured value of blood flow of the measurement target based on the number of times the mean value and the value of the respective data points intersects.
|