X-Ray Filter Design and Its Evaluation in Dual-Energy X-Ray Absorptiometry (DXA)

被引：1
|
作者：
Kim, Kwang Hyun [1 ]
机构：
[1] Jungwon Univ, Dept Med Engn, Goesan Gun, Chungcheongbuk, South Korea
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2010年 / 57卷 / 04期
关键词：
Dual-energy X-ray; DXA; K-edge filter; X-ray beam hardening; RADIOGRAPHY; TOMOGRAPHY;
D O I：
10.1109/TNS.2010.2050335
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper reports a new X-ray beam geometry to acquire two separated polychromatic X-rays as well as two separated fan beams using parallel different filters built in a single collimator. This newly designed X-ray spectrum was generated by a single X-ray shot but had the effect of double X-ray exposure. The two separated filters were used side by side. The first filter for the low energy spectra was 0.5 mm thick erbium and the second filter for the high energy spectra was composed of two layers of a 0.8 mm of copper and 0.4mmof rhodium. This combination of filters showed excellent performance of X-ray beam hardening regardless of the bone thickness in the soft tissue under DXA conditions.
引用
收藏
页码：2155 / 2158
页数：4
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