MED03 Basics of Doppler Sonography

Basics of Doppler Sonography Development of the physical and signal theoretical principles for blood flow investigations using the ultrasound Doppler method (Doppler sonography) The experiment will develop the physical and signal-theoretical principles necessary for blood flow studies using the ultrasound Doppler method. The dependence of the color-coded Doppler spectra on signal amplitude, flow velocity, direction of blood flow and choice of measurement window in the pulse Doppler method will be investigated using a realistic arm model. Keywords: Ultrasound scattering, Doppler effect, frequency shift, direction dependence, pulse Doppler, cw Doppler, Doppler sonography, blood flow velocity In Doppler sonography, the ultrasound scattering signal from moving particles (here blood cells) is detected and evaluated. Due to the movement of the blood cells relative to the ultrasound probe, the signal has a frequency shift and can therefore be easily separated from the signals from the virtual