TY - GEN
T1 - Spatial distributions of optical and acoustic properties and correlations with temperature in cyclically frozen-thawed poly(vinyl alcohol) gel breast phantoms
AU - Piras, Daniele
AU - Xia, Wenfeng
AU - Heijblom, Michelle
AU - Steenbergen, Wiendelt
AU - Van Leeuwen, Ton G.
AU - Manohar, Srirang
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - PVA
KW - Phantoms
KW - Photoacoustic
KW - Pores
UR - http://www.scopus.com/inward/record.url?scp=79953009998&partnerID=8YFLogxK
U2 - https://doi.org/10.1117/12.874515
DO - https://doi.org/10.1117/12.874515
M3 - Conference contribution
SN - 9780819484437
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Optical Diagnostics and Sensing XI
T2 - 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
Y2 - 22 January 2011 through 26 January 2011
ER -