发明名称 |
Automatic dynamic focusing for computed tomography |
摘要 |
A dynamic focusing device is provided for an X-ray scanner, the device comprising at least one detector module located in a position to receive, be illuminated by, and respond to X-rays. A source of X-rays is movable toward or away from the detector module. The module comprises a plurality of crystals each having a scintillation surface located in a common plane, with a plurality of septa separating the crystals. The septa have a height which is upstanding above the surfaces of the crystals far enough to reduce lateral X-ray scatter and to cast a shadow upon the surfaces of the crystals responsive to an illumination thereof from said X-ray source. The invention dynamically positions the detector module relative to the distance between the detector module and the source of X-rays in order to reduce substantially to a minimum any shadow in the X-rays cast by the septa upon the surfaces of the crystals.
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申请公布号 |
US4984257(A) |
申请公布日期 |
1991.01.08 |
申请号 |
US19900496679 |
申请日期 |
1990.03.21 |
申请人 |
BIO-IMAGING RESEARCH, INC. |
发明人 |
BERNARDI, RICHARD T.;MOORE, JOHN F. |
分类号 |
G01N23/04;G21K1/02 |
主分类号 |
G01N23/04 |
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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