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22 May 2020 Calculation of radiomic features to validate the textural realism of physical anthropomorphic phantoms for digital mammography
Raymond J. Acciavatti, Eric A. Cohen, Omid Haji Maghsoudi, Aimilia Gastounioti, Lauren Pantalone, Meng-Kang Hsieh, Bruno Barufaldi, Predrag R. Bakic, Jinbo Chen, Emily F. Conant, Despina Kontos, Andrew D. A. Maidment
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Proceedings Volume 11513, 15th International Workshop on Breast Imaging (IWBI2020); 1151309 (2020) https://doi.org/10.1117/12.2564363
Event: Fifteenth International Workshop on Breast Imaging, 2020, Leuven, Belgium
Abstract
In this paper, radiomic features are used to validate the textural realism of two anthropomorphic phantoms for digital mammography. One phantom was based off a computational breast model; it was 3D printed by CIRS (Computerized Imaging Reference Systems, Inc., Norfolk, VA) under license from the University of Pennsylvania. We investigate how the textural realism of this phantom compares against a phantom derived from an actual patient’s mammogram (“Rachel”, Gammex 169, Madison, WI). Images of each phantom were acquired at three kV in 1 kV increments using auto-time technique settings. Acquisitions at each technique setting were repeated twice, resulting in six images per phantom. In the raw (“FOR PROCESSING”) images, 341 features were calculated; i.e., gray-level histogram, co-occurrence, run length, fractal dimension, Gabor Wavelet, local binary pattern, Laws, and co-occurrence Laws features. Features were also calculated in a negative screening population. For each feature, the middle 95% of the clinical distribution was used to evaluate the textural realism of each phantom. A feature was considered realistic if all six measurements in the phantom were within the middle 95% of the clinical distribution. Otherwise, a feature was considered unrealistic. More features were actually found to be realistic by this definition in the CIRS phantom (305 out of 341 features or 89.44%) than in the phantom derived from a specific patient’s
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Raymond J. Acciavatti, Eric A. Cohen, Omid Haji Maghsoudi, Aimilia Gastounioti, Lauren Pantalone, Meng-Kang Hsieh, Bruno Barufaldi, Predrag R. Bakic, Jinbo Chen, Emily F. Conant, Despina Kontos, and Andrew D. A. Maidment "Calculation of radiomic features to validate the textural realism of physical anthropomorphic phantoms for digital mammography", Proc. SPIE 11513, 15th International Workshop on Breast Imaging (IWBI2020), 1151309 (22 May 2020); https://doi.org/10.1117/12.2564363
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KEYWORDS
Breast
Digital mammography
Mammography
Imaging systems
Wavelets
X-ray imaging
Breast cancer
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