X-ray beam z-axis positioning
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 include...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
03.03.2010
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Abstract | 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 directionbased on the estimated focal spot position prior to performing a scan. |
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AbstractList | 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 directionbased on the estimated focal spot position prior to performing a scan. |
Author | LUHTA RANDALL P MILLER LESTER M KAMATH JANARDHAN K |
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Snippet | 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... |
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SubjectTerms | BASIC ELECTRIC ELEMENTS DIAGNOSIS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY X-RAY TECHNIQUE |
Title | X-ray beam z-axis positioning |
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