Digital detector calibration with known exposure

Details Digital detector calibration with known exposure Digital detector calibration with known exposure

2008-07-22

2009-12-15

Yun, Jurie (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

Reexamination Certificate

active

07632016

ABSTRACT:
A method for calibrating a digital X-ray detector executed at least in part by a control logic processor. A radiation sensor is disposed along the optical path that extends between a radiation emitter and the digital X-ray detector. A set of radiation beam conditions for X-ray generation is selected and digital image values from the digital X-ray detector are obtained in one or more iterations of providing a threshold signal to radiation control logic, the threshold signal corresponding to a predetermined exposure level, exposing both the digital X-ray detector and the radiation sensor to radiation and terminating the exposure according to a comparison of the threshold signal with a signal from the radiation sensor that indicates an accumulated radiation level, then obtaining the digital image values from the digital X-ray detector. One or more sets of calibration values are generated according to the obtained digital image values.

REFERENCES:
patent: 5617462 (1997-04-01), Spratt
patent: 6192105 (2001-02-01), Hunter et al.
patent: 6944266 (2005-09-01), Yamazaki et al.

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