Liver fatty degeneration quantitative detection method and device based on ultrasonic radio frequency signal

The invention discloses a liver fatty degeneration quantitative detection method based on ultrasonic radio-frequency signals. The method comprises the following steps: acquiring a plurality of groups of ultrasonic radio-frequency signals of an abdominal region including a liver region through ultrasonic imaging; each group of ultrasonic radio frequency signals are preprocessed and converted into a depth interval matrix, the mth row of the depth interval matrix represents the mth depth interval, and the nth column of the depth interval matrix represents the nth RF signal line; performing frequency spectrum transformation on each depth interval of the depth interval matrix to obtain a power spectrum energy matrix representing the energy of the frequency measurement points and the corresponding depth measurement points; and calculating an attenuation coefficient representing the fatty degeneration degree of the liver through the power spectrum energy matrix. Therefore, interference signals are removed through th