Title :
Ultrasound speckle statistics variations with imaging systems impulse response
Author :
Rao, Navalgund ; Mehra, Sumat ; Zhu, Hui
Author_Institution :
Center for Imaging Sci., Rochester Inst. of Technol., NY, USA
Abstract :
The effects of resolution cell size on the speckle statistics below the Rayleigh limit are studied. A three-dimensional simulation phantom that takes into account the 3-D distribution of scatterers and the 3-D nature of resolution cell volume has been used. The medium is modeled as uniform matrix material with discrete scatterers distributed randomly. Envelope detection from the simulated RF signal is carried out by using the Hilbert transform. An analysis of speckle statistics was carried out on the data
Keywords :
acoustic imaging; biomedical ultrasonics; speckle; 3D simulation phantom; Hilbert transform; Rayleigh limit; envelope detection; imaging systems impulse response; resolution cell size; scatterers 3D distribution; simulated RF signal; ultrasound speckle statistics variations; uniform matrix material; Discrete transforms; Envelope detectors; Imaging phantoms; Rayleigh scattering; Signal resolution; Speckle; Statistical analysis; Statistical distributions; Statistics; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171602
