Clinical optimization of filters in direct a-se FFDM (full field digital mammography) system

被引：0
|
作者：
Uchiyama, Nachiko
Moriyama, Noriyuki
Kitagawa, Mayumi
Gomi, Shiho
Nagai, Yuichi
机构：
[1] Natl Canc Ctr, Dept Canc Screening, Res Ctr Canc Screening, Chuo Ku, Tokyo 1040045, Japan
[2] Natl Canc Ctr, Dept Radiol, Res Ctr Canc Screening, Chuo Ku, Tokyo 1040045, Japan
来源：
DIGITAL MAMOGRAPHY, PROCEEDINGS | 2006年 / 4046卷
关键词：
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
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.
引用
收藏
页码：315 / 323
页数：9
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