DYNAMIC CONTROL OF X-RAY EXPOSURE USING FOCAL SPOT TRANSLATION
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United States of America Patent
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Jan 23, 2025
app pub date -
Nov 15, 2022
filing date -
Nov 15, 2022
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Abstract
A method for acquiring x-ray data from a subject and generating a computed tomography (CT) image of the subject includes receiving a set of illumination field data including an illumination field produced by each of a plurality of focal spot positions of an x-ray source, selecting at least one sequence of at least two illumination fields based on at least one subject-specific parameter, assigning an illumination field from the selected at least one sequence to each gantry rotation angle in a plurality of gantry rotation angles, acquiring x-ray data from a subject for each gantry rotation angle using a focal spot position associated with the illumination field that is assigned to the gantry rotation angle, and generating an image slice based on the acquired x-ray data for each of the plurality of gantry rotation angles. The x-ray data can include a number of photons received by the detector array.
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