Coded excitation circuit on medical ultrasonic endoscope imaging system.
- Author:
Daoyin YU
1
;
Jing BAO
;
Xiaodong CHEN
;
Shijie WEN
Author Information
1. College of Precision Instrument & Opto-electronic Engineering, Tianjin University, Opto-electronic Information Science and Technology Lab, Tianjin 300072, China. dyyu@tju.edu.cn
- Publication Type:Journal Article
- MeSH:
Endosonography;
instrumentation;
methods;
Equipment Design;
Humans;
Image Interpretation, Computer-Assisted;
methods;
Transducers
- From:
Journal of Biomedical Engineering
2009;26(3):484-487
- CountryChina
- Language:Chinese
-
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.
