| 摘要 |
<p>J/AJ-989 Transducer Drive and Control in Ultrasound Imaging Systems In an ultrasound imaging system employing a moving or oscillating transducer, actual transducer position is detected periodically, rather than continuously. A magnet is caused to oscillate with the transducer, and periodic alignment of the magnet with a fixedly mounted Hall effect switch provides synchronization data for sonic pulse generation, pulse-echo receipt, and image assembly and display.</p> |
