Title :
Prediction of ultrasound attenuation in cancellous bones using poroelasticity and scattering theories
Author :
Padilla, Frédéric ; Laugier, Pascal
Author_Institution :
Lab. d´´Imagerie Paramatrique, Paris VI Univ., France
Abstract :
An heuristic model combining scattering and absorption is proposed to predict attenuation in trabecular bones. Trabecular bone is a highly porous material composed of a fluid-saturated trabecular network of plates and struts. Scattering is described using a weak scattering medium model. A close agreement is observed between theoretical and experimental backscatter coefficients. Absorption is described using the poroelasticity model developed by Blot. The total theoretical attenuation coefficient is approximately 4 dB below the experimental one. This is a significant improvement compared to the previous published models
Keywords :
backscatter; biomedical ultrasonics; bone; ultrasonic absorption; ultrasonic scattering; Biot model; attenuation coefficient; backscatter coefficients; cancellous bones; fluid-saturated network; heuristic model; poroelasticity; scattering theories; trabecular bones; ultrasound attenuation; weak scattering medium model; Absorption; Attenuation measurement; Backscatter; Cancellous bone; Frequency measurement; Osteoporosis; Predictive models; Scattering; Synchrotron radiation; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991934
