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Congress: ECR25
Poster Number: C-17005
Type: Poster: EPOS Radiologist (scientific)
DOI: 10.26044/ecr2025/C-17005
Authorblock: A. Belarra1, I. Hernandez-Giron2, J. Garayoa1, L. C. Martinez1, A. Ferrando1, J. Valverde1, M. J. Rot1, A. Martin1, M. Chevalier1; 1Madrid/ES, 2Dublin/IE
Disclosures:
Adrián Belarra: Nothing to disclose
Irene Hernandez-Giron: Nothing to disclose
Julia Garayoa: Nothing to disclose
Luis Carlos Martinez: Nothing to disclose
Alejandro Ferrando: Nothing to disclose
Julio Valverde: Nothing to disclose
Maria Jose Rot: Nothing to disclose
Antonio Martin: Nothing to disclose
Margarita Chevalier: Nothing to disclose
Keywords: Breast, Radiation physics, Mammography, Physics, Technology assessment, Image verification, Quality assurance
Purpose Anthropomorphic breast phantoms are potential tools for evaluation of X-ray image quality in digital mammography, digital breast tomosynthesis, and breast-dedicated computed tomography. Currently, phantoms commercially available often oversimplify breast anatomy, lacking realistic glandular distribution and anatomical noise, which are crucial for assessing lesion detection in near-clinical conditions. 3D printing enables the fabrication of customized and high-fidelity breast phantoms; specifically, fused deposition modeling (FDM) stands out for its affordability, though challenges remain in resolution and reproducibility. The aim of our work...
Read more Methods and materials Breast phantom model preparationA digital compressed breast phantom (6.5 cm thick) obtained with breast CT [Zenodo Database [1], model number 1], with voxels classified as glandular tissue, adipose tissue and skin, were selected. The voxels of the compressed digital phantom are anisotropic, with 0.363 x 0.3663 mm2 resolution in planes parallel to the chest wall and 0.2663 mm along the nipple-to pectoral muscle direction. A craniocaudal slice (area: 10.5 x 16.5 cm2, thickness: 1.1 cm) was selected and exported as...
Read more Results 3D-printed breast phantom: visual inspection and physical evaluationThe physical breast slice was 3D printed successfully without visible printing surface defects (Fig. 2a). This was achieved despite the limitations of the BambuLab X1C to print objects combining PLA and ABS filaments. The measured thickness of the printed slice was 1.110 ± 0.005 cm (1% thicker than nominal value). The 2D image (Fig. 2b, c) shows that the PLA-ABS interfaces are free of air artifacts and the infill pattern is barely visible (Fig....
Read more Conclusion A 3D-printed breast slice based on a breast CT of a real patient, using PLA to mimic both gland and skin, and ABS for fat, was successfully printed. The X-ray attenuation coefficients of the materials after complete printing remain compatible with those of reference materials (CIRS-Gland and CIRS-Fat). To reduce printing artifacts due to infill, efforts will be made to fine-tune the printing parameters and use other brands of filaments to print slices with higher homogeneity.  As future work, objects compatible with microcalcifications...
Read more References [1] Sarno A, Mettivier G, Di Franco F et al. Dataset of patient-derived digital breast phantoms for in silico studies in breast computed tomography, digital breast tomosynthesis, and digital mammography. Med. Phys. 2015; 48(5):2682-2693. doi: 10.1002/mp.14826.[2] Ivanov D, Kristina Bliznakova K, Ivan Buliev I et al. Suitability of low density materials for 3D printing of physical breast phantoms. Phys. Med. Biol. 2018; 63:175020. doi: 10.1088/1361-6560/aad315.[3] Belarra A, Chevalier M, Garayoa J et al. Measuring effective attenuation coefficients of 3D printing...
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