Question

1. Ultrasound is utilized in measuring blood flow non-invasively using a
phenomenon referred to as Doppler Effect.
a. Derive the expression of the Doppler shift

Answer 1

Explanation:

Doppler method has overpowered all the other methods of diagnostic science.

It is used to detect the moving blood cells or other structures from their relative frequencies.

The advantage over other methods is that it provides the analysis of real-time movement inside body without invasion, using the reflected frequencies of moving structures.

The expression for Doppler effect is given by

Source velocity/ speed of light = change in wavelength/ rest wavelength