The optical and acoustic properties of PVCP can be tuned to be broadly representative of soft tissue. The Grüneisen parameter is larger than expected in tissue, which is an advantage as it increases the signal-to-noise ratio of the photoacoustic measurements. Interestingly, when the absorption was altered by adding absorbers, the absorption spectra measured using high peak power nanosecond-pulsed sources (typical in photoacoustics) were repeatably different from the ones measured using the low power source in the spectrophotometer, indicative of photochemical reactions taking place.
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Martina Fonseca, Bajram Zeqiri, Paul Beard, Ben Cox, "Characterisation of a PVCP-based tissue-mimicking phantom for quantitative photoacoustic imaging," Proc. SPIE 9539, Opto-Acoustic Methods and Applications in Biophotonics II, 953911 (16 July 2015);