发明名称 |
Computed tomography apparatus for determining the pulse momentum transfer spectrum |
摘要 |
The invention relates to a computed tomography apparatus which includes a scanning unit which is rotatable, relative to an examination zone (13), around an axis of rotation (14) which extends through the examination zone (13), and also includes a radiation source (S) for generating a primary fan beam (41) which traverses the examination zone (13), and a two-dimensional detector array (D) which includes a plurality of detector elements and a part of the measuring surface of which detects primary radiation from the primary fan beam (41) whereas an other part of its measuring surface detects scattered radiation produced in the examination zone (13). In order to avoid reconstruction artefacts as much as possible in a computed tomography apparatus of this kind, in accordance with the invention it is proposed to arrange a modulation unit (33) between the radiation source (S) and the examination zone (13) in order to realize a temporally and spatially periodic modulation of the primary fan beam (41).
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申请公布号 |
US2002150202(A1) |
申请公布日期 |
2002.10.17 |
申请号 |
US20020114766 |
申请日期 |
2002.04.03 |
申请人 |
HARDING GEOFFREY;SCHLOMKA JENS PETER |
发明人 |
HARDING GEOFFREY;SCHLOMKA JENS PETER |
分类号 |
A61B6/02;A61B6/03;G01N23/04;G21K1/02;G21K5/02;(IPC1-7):G21K1/12;H05G1/60;A61B6/00;G01N23/00 |
主分类号 |
A61B6/02 |
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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