Patent ID: 7381964
Filing Date: 2008-06-03
Classification: A61B,H04N

Abstract:
1. An x-ray imaging system comprising: an x-ray detector configured to detect radiation attenuation through a subject to be imaged and output imaging data in response thereto; at least one thermal sensor configured to sense a temperature of the x-ray detector and provide temperature feedback of the x-ray detector; a processor operationally connected to receive the temperature feedback from the at least one thermal sensor and apply a correction to the output of the x-ray detector specific to the temperature of the x-ray detector; wherein the processor is further configured to automatically select a calibration map from a plurality of calibration maps for calibrating the x-ray detector based on the temperature of the x-ray detector during data acquisition; and wherein the processor is further configured to measure a time interval between acquisition of image data and acquisition of a subsequent offset data acquisition, and augment the offset data acquisition according to an offset data correction map to reduce artifacts due to power mode transients.