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Attenuation studies on dry and hydrated cross-linked hydrophilic copolymer materials at 8.02 to 28.43 kev using x-ray fluorescent sources

Sabar Bauk, and Spyrou, Nicholas M. , and Farquharson, Michael J. , (2007) Attenuation studies on dry and hydrated cross-linked hydrophilic copolymer materials at 8.02 to 28.43 kev using x-ray fluorescent sources. Journal of Physical Science, 18 (1). pp. 23-32.

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Official URL: http://www.usm.my/jps/18-1-07/Article%2018-1-3.pdf

Affiliations

Universiti Sains Malaysia. School of Distance Education. Physical Sciences Programme
University of Surrey, UK. Dept. of Physics
City University, UK. Dept. of Radiography

Abstract

Hydrophilic copolymers which consist of a combination of hydrophobic monomers (methyl methacrylate, MMA) and hydrophilic monomers (vinyl pyrolidone, VP) have all the required major elements such as hydrogen, carbon, nitrogen and oxygen, found in tissues. They have the potential to be used as breast phantom materials since they can be made to have similar elemental composition as that of body soft tissues. Photon attenuation measurements were performed on dry and hydrated hydrophilic copolymers using X-ray fluorescent (XRF) photons. They were obtained by bombarding copper, molybdenum, silver and tin targets to X-rays from an industrial X-ray tube; effectively producing 8.02, 8.89, 17.41, 19.55, 22.08, 24.87, 25.16 and 28.43 keV photons. The measured mass attenuation coefficients of the samples were compared with the calculated breast mass attenuation coefficients.

Item Type:Journal
Additional Information:The authors would like to thank Dr. Donald G. Highgate of the Chemistry Department, University of Surrey for the supply of ED1S and ED4C samples.
Keywords:attenuation, hydrophilic copolymer, X-ray fluorescence
Subjects:Q Science, Computer Science
ID Code:5260

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