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Bone Dielectric Property Variation as a Function of Mineralization at Microwave Frequencies
Joint Authors
Golnabi, Amir
Meaney, Paul M.
Attardo, Elia A.
Goodwin, Douglas
Zhou, Tian
Paulsen, Keith D.
Source
International Journal of Biomedical Imaging
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-19
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A critical need exists for new imaging tools to more accurately characterize bone quality beyond the conventional modalities of dual energy X-ray absorptiometry (DXA), ultrasound speed of sound, and broadband attenuation measurements.
In this paper we investigate the microwave dielectric properties of ex vivo trabecular bone with respect to bulk density measures.
We exploit a variation in our tomographic imaging system in conjunction with a new soft prior regularization scheme that allows us to accurately recover the dielectric properties of small, regularly shaped and previously spatially defined volumes.
We studied six excised porcine bone samples from which we extracted cylindrically shaped trabecular specimens from the femoral heads and carefully demarrowed each preparation.
The samples were subsequently treated in an acid bath to incrementally remove volumes of hydroxyapatite, and we tested them with both the microwave measurement system and a micro-CT scanner.
The measurements were performed at five density levels for each sample.
The results show a strong correlation between both the permittivity and conductivity and bone volume fraction and suggest that microwave imaging may be a good candidate for evaluating overall bone health.
American Psychological Association (APA)
Meaney, Paul M.& Zhou, Tian& Goodwin, Douglas& Golnabi, Amir& Attardo, Elia A.& Paulsen, Keith D.. 2012. Bone Dielectric Property Variation as a Function of Mineralization at Microwave Frequencies. International Journal of Biomedical Imaging،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-488159
Modern Language Association (MLA)
Meaney, Paul M.…[et al.]. Bone Dielectric Property Variation as a Function of Mineralization at Microwave Frequencies. International Journal of Biomedical Imaging No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-488159
American Medical Association (AMA)
Meaney, Paul M.& Zhou, Tian& Goodwin, Douglas& Golnabi, Amir& Attardo, Elia A.& Paulsen, Keith D.. Bone Dielectric Property Variation as a Function of Mineralization at Microwave Frequencies. International Journal of Biomedical Imaging. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-488159
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488159