Title :
Nonlinear contrast agent imaging with a linear array based micro-ultrasound system
Author :
Needles, A. ; Mehi, J. ; Arditi, M. ; Gaud, E. ; Frinking, P. ; Rognin, N. ; Hirson, D. ; Foster, F.S.
Author_Institution :
VisualSonics, Toronto, ON, Canada
Abstract :
Recently, a linear array based micro-ultrasound system with a 64 channel beamformer has been developed. This study will focus on the implementation of a real-time nonlinear contrast mode on this array based system, and the challenges faced in high-frequency contrast imaging, namely nonlinear propagation in tissue. The array transducer, beamforming techniques, digital sampling and signal processing will be described, along with in vitro and in vivo results.
Keywords :
acoustic signal processing; array signal processing; bioacoustics; biomedical transducers; biomedical ultrasonics; medical signal processing; nonlinear acoustics; ultrasonic imaging; ultrasonic transducer arrays; array transducer; beamformer; beamforming techniques; digital sampling; high frequency contrast imaging; linear array based microultrasound system; nonlinear contrast agent imaging; real time nonlinear contrast mode; signal processing; tissue nonlinear propagation; Amplitude modulation; Array signal processing; Frequency; Pulse modulation; Scattering; Signal processing; Signal sampling; Ultrasonic imaging; Ultrasonic transducers; Visualization; Contrast agent imaging; high-frequency; micro-ultrasound; microbubble; nonlinear; small animal;
Conference_Titel :
Ultrasonics Symposium (IUS), 2009 IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4389-5
Electronic_ISBN :
1948-5719
DOI :
10.1109/ULTSYM.2009.5441633
