Title :
Nonlinear coded excitation method for contrast imaging
Author :
Borsboom, Jerome ; Chin, Chien Ting ; Bouakaz, Ayache ; De Jong, Nico
Author_Institution :
Dept. of Cardiology & Exp. Echocardiography, Erasmus Univ., Rotterdam, Netherlands
Abstract :
Bursts are more effective than short pulses in generating strong response from an ultrasound contrast agent bubble. We propose chirped excitation signals in combination with a 2nd harmonic compression technique to improve the signal strength from the contrast agent. Results show good compression if the excitation chirp is band-limited. Range side lobes appear in the compressed signal if there is overlap between the harmonics and the fundamental
Keywords :
biomedical ultrasonics; bubbles; chirp modulation; harmonics; ultrasonic imaging; band-limited excitation chirp; chirped excitation signals; contrast imaging; diagnostic ultrasound; medical US imaging; microbubbles; nonlinear coded excitation method; range side lobes; resolution; second-harmonic compression technique; signal strength improvement; tissue; ultrasound contrast agent bubble; Cardiology; Chirp; High-resolution imaging; Image coding; Pulse compression methods; Pulse modulation; Scattering; Signal resolution; Signal to noise ratio; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.992055
