Spatial distributions of optical and acoustic properties and correlations with temperature in cyclically frozen-thawed poly(vinyl alcohol) gel breast phantoms

Daniele Piras; Wenfeng Xia; Michelle Heijblom; Wiendelt Steenbergen; Ton G. van Leeuwen; Srirang Manohar

doi:10.1117/12.874515

10 February 2011 Spatial distributions of optical and acoustic properties and correlations with temperature in cyclically frozen-thawed poly(vinyl alcohol) gel breast phantoms

Daniele Piras, Wenfeng Xia, Michelle Heijblom, Wiendelt Steenbergen, Ton G. van Leeuwen, Srirang Manohar

Author Affiliations +

Proceedings Volume 7906, Optical Diagnostics and Sensing XI: Toward Point-of-Care Diagnostics; and Design and Performance Validation of Phantoms Used in Conjunction with Optical Measurement of Tissue III; 79060O (2011) https://doi.org/10.1117/12.874515
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

Tissue mimicking phantoms are important for performance evaluation of imaging systems: in photoacoustics they need to accomplish both soft tissue optical and acoustic properties. PVA gels by freezing-thawing (F-T) have been used to simulate tissue properties. The microstructure, dependent on rate and extent of temperature cycling, is responsible for optical and acoustic properties. In F-T of larger phantoms, temperature differences in the mass are expected, resulting in a likely inhomogeneous distribution of properties in the phantom. We investigated speed of sound, acoustic attenuation, reduced optical scattering coefficient and microstructure: their variations are correlated with thermal differences between phantom surface and bulk.

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Daniele Piras, Wenfeng Xia, Michelle Heijblom, Wiendelt Steenbergen, Ton G. van Leeuwen, and Srirang Manohar "Spatial distributions of optical and acoustic properties and correlations with temperature in cyclically frozen-thawed poly(vinyl alcohol) gel breast phantoms", Proc. SPIE 7906, Optical Diagnostics and Sensing XI: Toward Point-of-Care Diagnostics; and Design and Performance Validation of Phantoms Used in Conjunction with Optical Measurement of Tissue III, 79060O (10 February 2011); https://doi.org/10.1117/12.874515

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