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Journal of Biomedical Optics

Effects of formalin fixing on the terahertz properties of biological tissues
Author(s): Yiwen Sun; Bernd Michael Fischer; Emma Pickwell-MacPherson
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Paper Abstract

We demonstrate how the terahertz properties of porcine adipose tissue and skeletal muscle are affected by formalin fixing. Terahertz radiation is sensitive to covalently cross-linked proteins and can be used to probe unique spectroscopic signatures. We study in detail the changes arising from different fixation times and see that formalin fixing reduces the refractive index and the absorption coefficient of the samples in the terahertz regime. These fundamental properties affect the time-domain terahertz response of the samples and determine the level of image contrast that can be achieved.

Paper Details

Date Published: 1 November 2009
PDF: 7 pages
J. Biomed. Opt. 14(6) 064017 doi: 10.1117/1.3268439
Published in: Journal of Biomedical Optics Volume 14, Issue 6
Show Author Affiliations
Yiwen Sun, The Chinese Univ. of Hong Kong (Hong Kong, China)
Bernd Michael Fischer, The Univ. of Adelaide (Australia)
Emma Pickwell-MacPherson, The Chinese Univ. of Hong Kong (Hong Kong, China)

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