Rapid Generation of Structured Physical Phantoms for Mammography and Digital Breast Tomosynthesis
Nonuniform phantoms are needed in order to fully characterize the impact of anatomical structures on system performance in mammography and digital breast tomosynthesis (DBT). In this work, a new type of textured physical phantom is presented, compatible for use in both 2D and 3D applications. The breast phantom was first modeled analytically, and then fabricated using inkjet printing onto parchment paper and slide transparencies. A radiographic ink solution was synthesized with 350 mg/mL iohexol and pigmented ink. The effective linear attenuation coefficient (µeff) of the parchment paper alone (0.078 ± 0.003 mm−1) was found to be very close to that of a 70 % adipose, 30 % fibroglandular tissue mixture (0.078 ± 0.004 mm−1). The µeff of the parchment paper with iodine (0.010 ± 0.005 mm−1) was close to that of 100 % fibroglandular tissue (0.11 ± 0.004 mm−1). This new parchment and iodine phantom has strong potential for use in imaging studies.
KeywordsBreast phantom Anthropomorphic Iodine Linear attenuation
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