Ultrasound image processing apparatus

An ultrasound image processing apparatus comprising:

• a texture parameter specifying unit that inputs target velocity distribution information to be processed to a learning model trained using, as training data, a combination including velocity distribution information indicating a velocity distribution indicated by a Doppler signal obtained by transmitting and receiving an ultrasound wave to and from a subject, and a texture parameter indicating a gamma curve, which indicates a relationship between a velocity indicated by the Doppler signal and a pixel value in a Doppler image, to predict the texture parameter appropriate for the velocity distribution information and output the predicted texture parameter in a case in which the velocity distribution information is input, and that specifies the texture parameter appropriate for the target velocity distribution information;
• an appropriate gamma curve decision unit that decides an appropriate gamma curve that is the gamma curve appropriate for the target velocity distribution information, based on the specified texture parameter;
• and
• a Doppler image formation unit that forms a Doppler image in which a velocity of a blood flow or a tissue of the subject is shown, based on the target velocity distribution information and the appropriate gamma curve.