Radiation detector, radiographic imaging device, radiographic imaging system and line capacitance adjusting method
AssigneeFUJIFILM Corporation
InventorYoshihiro Okada
Life of this patent
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Abstract
The present invention provides a radiation detector, a radiographic imaging device, a radiographic imaging system and a line capacitance adjusting method that may suppress image irregularities from occurring in the obtained radiographic images. Namely, the line capacitance difference between each of plural signal lines is reduced by adjusting elements (capacitors) connected to at least one of the plural signal lines.
Claims14
A radiation detector comprising:
- a plurality of radiation detection pixels that are configured to detect a state of irradiation of radiation;
- a plurality of image detection pixels that are configured to detect a radiographic image expressing the radiation that has passed through an imaging subject;
- a plurality of signal lines, each of a first set of the plurality of signal lines is connected to some of the plurality of image detection pixels and each of a second set of the plurality of signal lines is connected to some of the plurality of image detection pixels and at least one of the radiation detection pixels;
- and
- at least one adjusting element, each connected to one of the plurality of signal lines, that is configured to adjust capacitance to reduce the line capacitance difference between at least two of the plurality of signal lines.
A radiographic imaging device comprising:
- a radiation detector comprising,
- a plurality of radiation detection pixels that are configured to detect a state of irradiation of radiation,
- a plurality of image detection pixels that are configured to detect a radiographic image expressing the radiation that has passed through an imaging subject, and
- a plurality of signal lines, each of a first set of the plurality of signal lines is connected to some of the plurality of image detection pixels and each of a second set of the plurality of signal lines is connected to some of the plurality of image detection pixels and at least one of the radiation detection pixels;
- a determination section that is configured to determine the state of irradiation of radiation based on electric signals obtained from the second set of the plurality of signal lines;
- and
- at least one adjusting element, each connected to one of the plurality of signal lines, that is configured to adjust capacitance to reduce the line capacitance difference between at least two of the plurality of signal lines.
A line capacitance adjusting method for a radiation detector, wherein the radiation detector includes a plurality of radiation detection pixels, a plurality of image detection pixels, a plurality of signal lines where each of a first set of the plurality of signal lines is connected to some of the plurality of image detection pixels and each of a second set of the plurality of signal lines is connected to some of the plurality of image detection pixels and at least one of the radiation detection pixels and at least one adjusting element each connected to one of the plurality of signal lines, the line capacitance adjusting method comprising:
- detecting a state of irradiation of radiation with the plurality of radiation detection pixels;
- detecting a radiographic image expressing the radiation that has passed through an imaging subject with the plurality of image detection pixels;
- and
- adjusting capacitance to reduce the line capacitance difference between at least two of the plurality of signal lines with the at least one adjusting element.
Dependencies are inferred from the claim text.