Emulsion-based hydrogel phantoms for assessing boundary buildup and object detectability in photoacoustic imaging

Jorge Palma-Chavez; Keith A. Wear; Jesse V. Jokerst; William C. Vogt

doi:10.1117/12.2609158

7 March 2022 Emulsion-based hydrogel phantoms for assessing boundary buildup and object detectability in photoacoustic imaging

Jorge Palma-Chavez, Keith A. Wear, Jesse V. Jokerst, William C. Vogt

Author Affiliations +

Proceedings Volume PC11960, Photons Plus Ultrasound: Imaging and Sensing 2022; PC119601Y (2022) https://doi.org/10.1117/12.2609158
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Phantoms were designed to evaluate boundary buildup effect and object detectability. Tissue-mimicking materials simulating breast fat and parenchyma were prepared through emulsification of silicone oil, ethylene glycol and polyacrylamide hydrogel. Imaging targets were prepared by adding either India ink to the water phase or nigrosin to the oil phase. Phantom and inclusion molds were fabricated using an affordable 3D printer, yielding phantoms containing stepped-cylinder inclusions with 1-8 cm-1 optical absorption coefficients and 1-5 mm diameters. Maximum imaging depth depended on whether target boundary buildup or filled-in features were analyzed, with boundary buildup being more detectable.

Conference Presentation

Citation Download Citation

Jorge Palma-Chavez, Keith A. Wear, Jesse V. Jokerst, and William C. Vogt "Emulsion-based hydrogel phantoms for assessing boundary buildup and object detectability in photoacoustic imaging", Proc. SPIE PC11960, Photons Plus Ultrasound: Imaging and Sensing 2022, PC119601Y (7 March 2022); https://doi.org/10.1117/12.2609158

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