Using the discrete Gabor expansion for the Doppler ultrasound signal processing.
In this paper we have synthesized the Doppler signal with a known time varying mean frequency, then used the orthogonal-like Discrete Gabor Transform (DGT) and the spectrogram for analyzing the signal. Mean square error has been computed for each method respectively and at last we have analyzed the real clinical signal too.
Electrical Engineering Department, Iran University of Science & Technology, Islamic Azad University, Tehran South Unit, Tehran, Iran. s_ghofrani@iust.ac.ir
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Ghofrani
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Ayatollahi
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Shamsollahi
D000465:Algorithms; D016477:Artifacts; D001783:Blood Flow Velocity; D002339:Carotid Arteries / Q000000981:diagnostic imaging* / Q000502:physiology; D003198:Computer Simulation; D005583:Fourier Analysis; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008954:Models, Biological; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013269:Stochastic Processes; D014463:Ultrasonography / Q000379:methods*; D018616:Ultrasonography, Doppler, Duplex / Q000379:methods