22 February 2008 Ultrasonic transmitter for coded excitation in medical endoscope imaging system
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Proceedings Volume 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology; 662217 (2008) https://doi.org/10.1117/12.790823
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China
Abstract
In this paper, we introduced an ultrasonic transmitter for coded excitation used in medical ultrasonic endoscope, which is mainly composed of MD1211 and TC6320. Since the ultrasonic endoscope uses a miniature ultrasonic probe whose length is no more than 14mm, and the diameter is no more than 2.2mm, the ultrasonic excitation power is very low, which makes it difficult to obtain a sharp image. So it is very important to use coded excitation to enhance image quality, which can improve the SNR of the echo without degrading the axial resolution. The transmitter accepts coded signals from FPGA and transforms them to ±60V driving signals which are sent to transducer, making it easy to implement coded excitation in ultrasonic endoscope.
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Shijie Wen, Shijie Wen, Xiaodong Chen, Xiaodong Chen, Jing Bao, Jing Bao, Daoyin Yu, Daoyin Yu, "Ultrasonic transmitter for coded excitation in medical endoscope imaging system", Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 662217 (22 February 2008); doi: 10.1117/12.790823; https://doi.org/10.1117/12.790823
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