A dynamic filter while using dual unipolar pulse excitation in digital ultrasound imapng system
10.3760/cma.j.issn.1673-4181.2009.02.009
- VernacularTitle:全数字超声成像中采用双脉冲激励时动态滤波器的设计
- Author:
Peng LI
;
Yuquan CHEN
- Publication Type:Journal Article
- Keywords:
Ultrasound;
Dual unipolar pulse;
Dynamic filter
- From:
International Journal of Biomedical Engineering
2009;32(2):95-98
- CountryChina
- Language:Chinese
-
Abstract:
Objective This paper analyzes the spectrum of ultrasonic echo and its change with depth when using dual unipolar pulse excitation.Methods According to the theory of matched filter,a group of aynmic filter was designed to ensure the near-field image resolution while maintaining the sensitivity of far-field image.Results This filter was accomplished in FPGA chip.Conclusion Higher image quality Can obtained applying this filter in the au-digital ultrasonic imaging system compared with those using constant filter.
