发明名称 |
X-ray beam z-axis positioning |
摘要 |
A medical imaging system includes an x-ray source (112) having a focal spot that emits radiation that traverses an examination region (108). The position of the focal spot along a longitudinal direction is a function of a temperature of one or more x-ray source components. The system further includes a detector (120) that detects the radiation and a collimator (116), disposed between the x-ray source (112) and the examination region (108), that collimates that radiation along the longitudinal direction. A focal spot position estimator (132) dynamically computes an estimated position of the focal spot along the longitudinal direction based on the temperature of one or more x-ray source components. A collimator positioner (128) positions the collimator (116) along the longitudinal direction based on the estimated focal spot position prior to performing a scan.
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申请公布号 |
US8331529(B2) |
申请公布日期 |
2012.12.11 |
申请号 |
US20080597178 |
申请日期 |
2008.03.28 |
申请人 |
MILLER LESTER;KAMATH JANARDHAN K.;LUHTA RANDALL P.;KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
MILLER LESTER;KAMATH JANARDHAN K.;LUHTA RANDALL P. |
分类号 |
G01N23/04 |
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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