[Causes and influential factors of spectral broadening in Doppler flow signal].
Signals received are the resultant of the blood flow phasors in CW Doppler system and there are spectral broadening phenomena in it, in other words, frequency of signals corresponding to a moving RBC is not single. A model is presented that enables the detailed effects of spectral broadening to be calculated for a CW Doppler system by using geometric boundary argument. Results are given for the circular geometry.
Wen
Y
Y
Dept. of Biomedical Engineering, Xi'an Jiaotong University.
Qian
M
M
Gong
X
X
Zhen
B
B
Wan
M
M
D001783:Blood Flow Velocity; D003198:Computer Simulation; D004912:Erythrocytes / Q000502:physiology; D006801:Humans; D012039:Regional Blood Flow; D012815:Signal Processing, Computer-Assisted; D018608:Ultrasonography, Doppler