Non-uniform ultrasound speckle phase distribution applied to scatterer spacing estimation [medical imaging application]

Author

Weng, L. ; Reid, J.M. ; Shankar, P.M. ; Soentanto, K.

Author_Institution

Drexel Univ., Philadelphia, PA, USA

fYear

1990

fDate

4-7 Dec 1990

Firstpage

1593

Abstract

When regularly spaced scatters exist in an insonated region, the speckle phase may not be uniformly distributed. A novel frequency sweeping technique for scatterer spacing estimation is proposed and applied to simulated and to experimental data. Parametric expressions of the phase statistics are proposed and tested and tested for the estimation. Changes in these parameters identify the mean scatterer spacing for even and for odd multiples of the 1/4 wavelength cases, when sweeping the receiver quadrature demodulation frequency. This technique has good tolerance for variations in scatter spacing, and has real-time implementation capability

Keywords

acoustic imaging; biomedical ultrasonics; speckle; ultrasonic scattering; frequency sweeping technique; insonated region; nonuniform US speckle phase distribution; parametric expressions; phase statistics; real-time implementation capability; receiver quadrature demodulation frequency; regularly spaced scatters; scatterer spacing estimation; Demodulation; Frequency estimation; Parametric statistics; Phase estimation; Scattering parameters; Speckle; Statistical analysis; Statistical distributions; Testing; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171637

Filename

171637