title: [Causes and influential factors of spectral broadening in Doppler flow signal].
abstract: 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.
authors.affiliation: Dept. of Biomedical Engineering, Xi'an Jiaotong University.
authors.forename: Y
authors.initials: Y
authors.lastname: Wen
authors.forename: M
authors.initials: M
authors.lastname: Qian
authors.forename: X
authors.initials: X
authors.lastname: Gong
authors.forename: B
authors.initials: B
authors.lastname: Zhen
authors.forename: M
authors.initials: M
authors.lastname: Wan
mesh_terms: 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