A multibandwidth probing method for tissue scattering microstructure characterization

Author

Rao, N. A H K ; Helguera, M.

Author_Institution

Center for Imaging Sci., Rochester Inst. of Technol., NY, USA

Volume

2

fYear

1997

fDate

5-8 Oct 1997

Firstpage

1193

Abstract

In medical ultrasound the normalized second intensity moments of the echo signal can depend on the imaging system resolution cell volume (axial and lateral resolution) in addiction to the scattering microstructure. The authors propose a multibandwidth probing technique in an attempt to separate the two. Theoretical relationships between second intensity moments, (scattering coefficients, scatterer spacing, and its randomness) and the system´s cell volume are stablished. Experiments on water filled sponge structures with pore size varying from .5 mm to 2 mm and pig liver tissue are performed. The slope and intercept values from normalized second intensity moments versus (cell volume)^-1 graph are shown to be of diagnostic value in structure characterization

Keywords

biomedical ultrasonics; image resolution; liver; ultrasonic scattering; 0.5 to 2 mm; axial resolution; cell volume; echo signal; imaging system resolution cell volume; lateral resolution; medical diagnostic technique; medical ultrasound; multibandwidth probing method; normalized second intensity moments; pig liver tissue; pore size; scatterer spacing; scattering coefficients; tissue scattering microstructure characterization; water filled sponge structures; Acoustic scattering; Bandwidth; Diffraction; Frequency estimation; Image resolution; Low pass filters; Microstructure; Rayleigh scattering; Signal resolution; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE

Conference_Location

Toronto, Ont.

ISSN

1051-0117

Print_ISBN

0-7803-4153-8

Type

conf

DOI

10.1109/ULTSYM.1997.661792

Filename

661792