发明名称 |
fonte de raios x, sistema de aquisição de imagens por raios x, método para determinar alterações no rendimento de emissões de raios x de um tubo de raios x, elemento de programa de computador para controlar um aparelho e meio legível por computador |
摘要 |
The present invention relates to determining changes in the X-ray emission yield of an X-ray tube, in particular determining dose degradation. In order to provide determination of such changes, an X-ray source is provided comprising a cathode, an anode; and at least one X-ray sensor (16). The cathode emits electrons towards the anode and the anode comprises a target area on which the electrons impinge, generating X-ray radiation. An X-ray barrier (24) is provided with an aperture (26) for forming an emitting X-ray beam from the X-ray radiation, wherein the emitting X-ray beam has a beam formation (30) with a central axis. The at least one X-ray sensor is arranged within the beam formation and measures the X-ray intensity for a specific direction of X-ray emission with an angle with respect to the central axis. The at least one X-ray sensor can be positioned inside the beam formation (30), but outside the “actual field of view” (40) as determined by a diaphragm (36). |
申请公布号 |
BR112013011030(A2) |
申请公布日期 |
2016.09.13 |
申请号 |
BR20131111030 |
申请日期 |
2011.11.02 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V |
发明人 |
HANS PETER SPRONG;MARTIN KIMUTAI DUERR;RAINER KIEWITT |
分类号 |
H01J35/02;H05G1/30 |
主分类号 |
H01J35/02 |
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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