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Optimization of tube potential-filter combinations for film-screen mammography: a contrast detail phantom study
Authors:Chida Koichi  Zuguchi Masayuki  Sai Masahiro  Saito Haruo  Yamada Takayuki  Ishibashi Tadashi  Ito Daisuke  Kimoto Nobumitsu  Kohzuki Masahiro  Takahashi Shoki
Affiliation:Department of Radiological Technology, Faculty of Medicine, Tohoku University School of Health Sciences, Seiryoumachi 2-1, Sendai 980-8575, Japan. chida@rad.cms.tohoku.ac.jp
Abstract:This study evaluated how tube potential-filter combinations [with a molybdenum (Mo) anode and either an Mo or a rhodium (Rh) filter] influence image quality and radiation dose to breasts of different thicknesses in film-screen mammography using a new mammography phantom (CDMAM Phantom Type 3.4). A 28-kVp/Mo tube potential-filter combination is recommended for a breast (phantom) thickness of 40 mm or less, 28 kVp/Rh for a breast (phantom) thickness of 60 mm or less, and 30 kVp/Rh for a breast (phantom) thickness greater than 60 mm.
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