Measuring effective attenuation coefficients of 3D printing materials for anthropomorphic breast phantoms

A. Belarra; M. Chevalier; J. Garayoa; I. Hernández-Girón; J. Valverde

doi:10.1117/12.3027031

29 May 2024 Measuring effective attenuation coefficients of 3D printing materials for anthropomorphic breast phantoms

A. Belarra, M. Chevalier, J. Garayoa, I. Hernández-Girón, J. Valverde

Proceedings Volume 13174, 17th International Workshop on Breast Imaging (IWBI 2024); 131741H (2024) https://doi.org/10.1117/12.3027031
Event: 17th International Workshop on Breast Imaging (IWBI 2024), 2024, Chicago, IL, United States

Abstract

Anthropomorphic breast phantoms are necessary for image quality evaluation of breast x-ray- systems in realistic conditions. 3D-printing techniques are an alternative for producing breast phantoms. This work aims to experimentally determine the effective x-ray attenuation coefficient (μ_eff) of 3D-printing materials (PLA, ABS and HIPS), well-known breast tissue-equivalent materials (CIRS Gland and CIRS Fat) and PMMA using a clinical breast x-ray imaging system. Three target-filter combinations were considered: W/Rh 29kVp, W/Ag 30kVp and W/Al 29kVp. To validate the experimental method, effective attenuation coefficients values were obtained with numerical methods and Monte-Carlo simulations. Experimental and numerical μ_eff relative differences were < 10% for W/Rh and W/Ag acquisition and around 40% for W/Al, because of the scattering radiation. Experimental and MC simulated μ_eff relative differences were < 14% for W/Rh and W/Ag acquisition and around 2% for W/Al. The relative differences between the effective attenuation coefficients values of PLA and CIRS Gland, and ABS and CIRS Fat were found to be between 2 and 8 %. In consequence, these materials are adequate candidates materials to mimic breast glandular and adipose tissue in anthropomorphic phantoms manufacturing.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

A. Belarra, M. Chevalier, J. Garayoa, I. Hernández-Girón, and J. Valverde "Measuring effective attenuation coefficients of 3D printing materials for anthropomorphic breast phantoms", Proc. SPIE 13174, 17th International Workshop on Breast Imaging (IWBI 2024), 131741H (29 May 2024); https://doi.org/10.1117/12.3027031

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KEYWORDS

Attenuation

X-rays

Breast

X-ray imaging

3D printing

Monte Carlo methods

Imaging systems

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