SPECTRAL X-RAY CT IMAGING SYSTEM
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United States of America
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Issued Date -
Feb 20, 2025
app pub date -
Dec 19, 2022
filing date -
Dec 19, 2022
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Abstract
The present invention relates to a spectral X-ray CT imaging system (10), comprising: a spectral X-ray CT imaging unit (20); a processing unit (30); and an output unit (40). The spectral X-ray CT imaging unit comprises an X-ray tube (22) and a dual layer X-ray detector (24), and wherein a body portion of a subject to be examiner can be located between the X-ray tube and the dual layer X-ray detector. The spectral X-ray CT imaging unit is configured to acquire an overall scan of the body portion comprising a plurality of acquisitions at different projections angles. The processing unit is configured to utilize information on the body portion for each projection of the different projections angles. The processing unit is configured to determine a voltage for the X-ray tube for each acquisition of the plurality of acquisitions, wherein the determination for each acquisition comprises utilization of the corresponding information on the body portion for the projection associated with that acquisition. The processing unit is configured to control the spectral X-ray CT imaging unit to carry out an implemented overall scan of the body portion, wherein the control comprises controlling the X-ray tube to operate at the determined X-ray tube voltage for each acquisition of the plurality of acquisitions at the different projections angles. The processing unit is configured to receive data from the dual layer X-ray detector for each acquisition of the implemented overall scan. The processing unit is configured to implement a machine learning algorithm to determine material decomposition imagery of the body portion, wherein the determination comprises utilization of the data from the dual layer X-ray detector for each acquisition of the implemented overall scan and the determined X-ray tube voltage for each acquisition of the implemented overall scan. The output unit is configured to output the material decomposition imagery of the body portion.
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