发明名称 |
Beam filter, particularly for x-rays |
摘要 |
The invention relates to a beam filter (10) that can particularly be used in spectral CT-applications for producing a desired intensity profile of a radiation beam without changing its spectral composition. In a preferred embodiment, the beam filter (10) comprises a stack of absorbing sheets (111) that are separated by wedge-shaped spaces (112) and focused to a radiation source (1). Furthermore, the absorbing sheets have a varying width in direct ion of the radiation. Different fractions of the radiation source (1) area are therefore masked by the beam filter (10) at different points (A, B) on a detector area (2). The absorbing sheets preferably comprise a material that is highly absorbing for the radiation to be filtered.
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申请公布号 |
US8031840(B2) |
申请公布日期 |
2011.10.04 |
申请号 |
US20070517262 |
申请日期 |
2007.11.30 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
THRAN AXEL;SCHLOMKA JENS-PETER |
分类号 |
G21K3/00 |
主分类号 |
G21K3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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