METHOD AND APPARATUS FOR AUTOMATIC GAIN ADJUSTMENT IN SPECTRAL DOPPLER

摘要

A method for automatic gain adjustment in spectral (pulsed wave - PW, and/or continuous wave - CW) Doppler for medical ultrasound includes separating a two- dimensional (2D) array of spectral levels (spectrogram) to be analyzed into signal and noise subsets. For each of the signal and noise subsets, a delta gain is calculated for achieving a predetermined display-based design specification. Subsequently, the separate signal and noise delta gains are combined into a single delta gain value, which is then applied to subsequent spectral Doppler signals or the spectrogram data stored in image memory, depending on whether the spectral Doppler mode is in a live or frozen state.