Comparison of time-frequency estimators for peripheral embolus detection

Recently, a time-frequency processing of peripheral arterial Doppler signal s, based on the spectrogram, was proposed to detect automatically high-inte nsity transient signal. Three time-frequency representations, the smooth-ps eudo-Wigner-Ville, the Cloi-Williams and the cone-kernel distributions were compared with the spectrogram, following the detection scheme previously r eported. The results showed that the spectrogram provided the best compromi ses between false-detection and no-detection compared with the other time-f requency representations. (C) 2000 World Federation for Ultrasound in Medic ine & Biology.