TEMPERATURE CORRECTION SYSTEM AND METHOD FOR X-RAY DETECTOR

摘要

The present invention provides temperature correction system and method for X-ray detector. The method comprises: obtaining offset data of pixel units of the X-ray detector at a current temperature; subtracting calibration offset data of each pixel unit at a preset temperature from the offset data of the pixel unit at the current temperature to obtain a current offset data increment of each pixel unit; obtaining X-ray response data of each pixel unit with a preset scanning parameter at the current temperature; obtaining a current X-ray response data increment of each pixel unit based on a pre-stored transform function, wherein the transform function uses the current offset data increment of each pixel unit and the X-ray response data of each pixel unit at the current temperature as independent variables, and uses the current X-ray response data increment of each pixel unit as a dependent variable; and obtaining corrected X-ray response data of each pixel unit by subtracting the current X-ray response data increment of each pixel unit from the X-ray response data of each pixel unit at the current temperature.

主权项

1. A temperature correction system for an X-ray detector, the system comprising:
an offset data obtaining module for obtaining offset data of pixel units of the X-ray detector at a current temperature; an offset data increment obtaining module for subtracting calibration offset data of each of the pixel units at a preset temperature from the offset data of the pixel unit at the current temperature to obtain a current offset data increment of the each pixel unit; an X-ray response data obtaining module for obtaining X-ray response data of the each pixel unit with a preset scanning parameter at the current temperature; a transforming module for obtaining a current X-ray response data increment of the each pixel unit based on a pre-stored transform function, wherein the transform function uses the current offset data increment of the each pixel unit and the X-ray response data of the each pixel unit at the current temperature as independent variables, and uses the current X-ray response data increment of the each pixel unit as a dependent variable; and a correcting module for obtaining corrected X-ray response data of the each pixel unit by subtracting the current X-ray response data increment of the each pixel unit from the X-ray response data of the each pixel unit at the current temperature.