发明名称 |
APPARATUS FOR MAKING TOMOGRAPHIC IMAGES |
摘要 |
<p>Disclosed is a tomographic apparatus (100; 200; 300) wherein a camera (10) is provided with a converging collimator (120; 220; 320), and wherein a planar radiation beam makes a scanning movement to move an elongate illumination pattern (125; 225; 325) over the camera (10). In a first embodiment the collimator (120) is a fan beam collimator, and the radiation source (150) is a line-shaped radiation source which is rotatable about its longitudinal axis. In a second embodiment the collimator (220) is a fan beam collimator, and the radiation source (250) is a point-shaped radiation source which is movable along the convergence line (221) of the collimator (220). In a third embodiment the collimator (320) is a cone beam collimator, and the radiation source (350) is a point-shaped radiation source which is rotatable about an axis of rotation (357) which intersects the convergence point (321) of the collimator (320). As a result, a good image sharpness and a good separation of emission and transmission sources is accomplished.</p> |
申请公布号 |
EP1007989(A1) |
申请公布日期 |
2000.06.14 |
申请号 |
EP19970918432 |
申请日期 |
1997.05.12 |
申请人 |
ACADEMISCH ZIEKENHUIS UTRECHT |
发明人 |
BEEKMAN, FREDERIK, JOHANNES |
分类号 |
G01T1/164;G01T1/29;(IPC1-7):G01T1/29 |
主分类号 |
G01T1/164 |
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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