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Generation of polychromatic projection for dedicated breast computed tomography simulation using anthropomorphic numerical phantom.

 Hosang Jeon  ;  Hanbean Youn  ;  Jin Sung Kim  ;  Jiho Nam  ;  Jayoung Lee  ;  Juhye Lee  ;  Dahl Park  ;  Wontaek Kim  ;  Yongkan Ki  ;  Donghyun Kim 
 PLoS One, Vol.12(11) : e0187242, 2017 
Journal Title
 PLoS One 
Issue Date
Breast/diagnostic imaging* ; Computer Simulation ; Female ; Humans ; Phantoms, Imaging* ; Tomography, X-Ray Computed/methods*
Numerical simulations are fundamental to the development of medical imaging systems because they can save time and effort in research and development. In this study, we developed a method of creating the virtual projection images that are necessary to study dedicated breast computed tomography (BCT) systems. Anthropomorphic software breast phantoms of the conventional compression type were synthesized and redesigned to meet the requirements of dedicated BCT systems. The internal structure of the breast was randomly constructed to develop the proposed phantom, enabling the internal structure of a naturally distributed real breast to be simulated. When using the existing monochromatic photon incidence assumption for projection-image generation, it is not possible to simulate various artifacts caused by the X-ray spectrum, such as the beam hardening effect. Consequently, the system performance could be overestimated. Therefore, we considered the polychromatic spectrum in the projection image generation process and verified the results. The proposed method is expected to be useful for the development and optimization of BCT systems.
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1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실)
Yonsei Authors
김진성(Kim, Jinsung) ORCID logo https://orcid.org/0000-0003-1415-6471
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