title: [Coded excitation circuit on medical ultrasonic endoscope imaging system].
abstract: In this paper, we introduce a coded excitation circuit for medical ultrasonic endoscope imaging system. This circuit is composed of TC6320 and its drive chip. The experiment demonstrates that this circuit can export frequency-adjustable, duration-controllable coded signals, and its voltage reaches +/-60 V. It still works well when excitant frequency reaches 30 MHz. Compared with the conventional medical ultrasonic pulse-echo imaging system, this coded excitation system has the potential of higher SNR and deeper penetration depth, especially for the small emission power system. This method has a bright future.
authors.affiliation: College of Precision Instrument & Opto-electronic Engineering, Tianjin University, Opto-electronic Information Science and Technology Lab, Tianjin 300072, China. dyyu@tju.edu.cn
authors.forename: Daoyin
authors.initials: D
authors.lastname: Yu
authors.forename: Jing
authors.initials: J
authors.lastname: Bao
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chen
authors.forename: Shijie
authors.initials: S
authors.lastname: Wen
mesh_terms: D019160:Endosonography / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D014159:Transducers