DocumentCode
2366960
Title
A model to predict dispersion in cancellous bone
Author
Wear, Keith A.
Author_Institution
FDA Center for Devices & Radiol. Health, Rockville, MD, USA
Volume
2
fYear
2001
fDate
2001
Firstpage
1217
Abstract
In contrast to most biologic tissues, phase velocity in cancellous bone tends to decrease with frequency. A stratified model, consisting of alternating layers of bone and marrow (in vivo) or water (in vitro), has been employed to study this phenomenon. Phase velocity was measured from 300-700 kHz in phantoms consisting of regularly-spaced parallel polystyrene sheets in water, and 30 calcanea in vitro. For the phantoms, the agreement between theory and experiment was good. For the calcanea, the model performs well for predicting the frequency dependence of phase velocity
Keywords
biomedical ultrasonics; bone; patient diagnosis; porosity; 300 to 700 kHz; calcanea; cancellous bone; dispersion; osteoporotic fracture risk; phase velocity; regularly-spaced parallel polystyrene sheets; stratified model; Biological system modeling; Biological tissues; Cancellous bone; Frequency; Imaging phantoms; In vitro; In vivo; Phase measurement; Predictive models; Velocity measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2001 IEEE
Conference_Location
Atlanta, GA
Print_ISBN
0-7803-7177-1
Type
conf
DOI
10.1109/ULTSYM.2001.991938
Filename
991938
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