Clinical optimization of filters in direct a-se FFDM (full field digital mammography) system
N Uchiyama, N Moriyama, M Kitagawa, S Gomi… - … Workshop, IWDM 2006 …, 2006 - Springer
N Uchiyama, N Moriyama, M Kitagawa, S Gomi, Y Nagai
Digital Mammography: 8th International Workshop, IWDM 2006, Manchester, UK …, 2006•SpringerWe evaluated three combinations of filters (Mo/Mo, Mo/Rh, and W/Rh) in direct a-Se FFDM
system to optimize radiation dose clinically. We measured CNR (Contrast to Noise Ratio) as
physical characteristics changing radiation dose and phantom thickness in clinical range. In
20, 30, 40, and 50mm PMMA phantoms, Mo/Mo showed the best performances. On the other
hand, in 60 and 70 mm, W/Rh 30kV showed best performance. In addition, in 40 and 50mm
PMMA phantoms, W/Rh 30kV showed the second best performance. In direct a-Se FFDM …
system to optimize radiation dose clinically. We measured CNR (Contrast to Noise Ratio) as
physical characteristics changing radiation dose and phantom thickness in clinical range. In
20, 30, 40, and 50mm PMMA phantoms, Mo/Mo showed the best performances. On the other
hand, in 60 and 70 mm, W/Rh 30kV showed best performance. In addition, in 40 and 50mm
PMMA phantoms, W/Rh 30kV showed the second best performance. In direct a-Se FFDM …
Abstract
We evaluated three combinations of filters (Mo/Mo, Mo/ Rh, and W /Rh) in direct a-Se FFDM system to optimize radiation dose clinically. We measured CNR (Contrast to Noise Ratio) as physical characteristics changing radiation dose and phantom thickness in clinical range. In 20, 30, 40, and 50mm PMMA phantoms, Mo / Mo showed the best performances. On the other hand, in 60 and 70 mm, W/Rh 30kV showed best performance. In addition, in 40 and 50mm PMMA phantoms, W/Rh 30kV showed the second best performance. In direct a-Se FFDM system, W/Rh was valuable in minimizing radiation dose.
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