Title :
Simulation of B-mode imaging and spatial compounding in inhomogeneous media
Author :
Krueger, M. ; Ermert, H. ; Li, M. ; Kaarmann, H.T.
Author_Institution :
Inst. fur Hochfrequenztech., Ruhr-Univ., Bochum, Germany
Abstract :
The design of ultrasonic B-mode imaging systems with linear arrays requires the optimization of numerous parameters. A hybrid simulation method using finite element analysis data, a Huygens-integral modified in order to consider inhomogeneities, and the first order Born approximation has been developed to optimize beam forming operating modes. B-mode images and spatially compounded images are calculated for a 3.5 MHz phased array. The influence of layered media on the extension of the point spread function can be corrected using backpropagation. Irregularly aberrating media influence the point spread function and the image quality significantly. Parameters for beam forming in B-mode imaging and spatial compounding are selected taking these inhomogeneities into account
Keywords :
backpropagation; biomedical ultrasonics; digital simulation; finite element analysis; medical image processing; ultrasonic transducer arrays; 3.5 MHz; 3.5 MHz phased array; B-mode imaging; Huygens-integral; backpropagation; beam forming operating modes; design; finite element analysis data; first order Born approximation; hybrid simulation method; image quality; inhomogeneous media; irregularly aberrating media; layered media; linear arrays; optimization; point spread function; simulation; spatial compounding; spatially compounded images; ultrasonic B-mode imaging systems; Analytical models; Approximation methods; Data analysis; Design optimization; Finite element methods; Nonhomogeneous media; Optimization methods; Phased arrays; Scattering; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495814
