| 摘要 |
An ultrasound transmitter (1) generates ultrasound signals at an adjustable pulse repetition rate (1A). A Doppler unit (8) generates Doppler signals from ultrasound backscattered signals and stores them in a memory. A logic unit (9) performs an algorithm which automatically adjusts the polarity and position of the velocity scale of a display and automatically adjusts the pulse repetition rate of the transmitter based on analysis of the signals. <IMAGE> |
