Back to results
US 12,631,775 B2Granted
Radiation imaging apparatus and radiation imaging system
AssigneeCanon Kabushiki Kaisha
InventorAsato Kosuge
Life of this patent
Estimating the term…
Abstract
A radiation imaging apparatus having a function of detecting a start and an end of emission of radiation and an amount of emission of radiation includes a plurality of pixels configured to generate signals according to a dose of radiation, signal lines connected to the plurality of pixels, a reading circuit configured to read the signals from the pixels via the signal lines and generate values according to the signals, and a control unit configured to control an operation of the reading circuit. A row including a pixel from which a signal has been read during the emission of radiation is not read when a diagnosis image is generated.
Claims11
A radiation imaging apparatus comprising:
- a pixel unit including a plurality of elements arranged in a matrix and configured to generate charges based on emission of radiation, a plurality of driving lines connecting the plurality of elements in each row, and a plurality of signal lines connecting the plurality of elements in each column;
- a bias supply unit configured to supply a bias voltage to the plurality of elements of the pixel unit;
- a driving unit configured to supply a driving signal to each of the plurality of driving lines;
- a reading unit configured to read, via the signal lines, signals based on charges from the elements connected to the driving line to which the driving signal is supplied;
- an image generation unit configured to generate a radiation image based on the signals read by the reading unit;
- and
- a control unit configured to control operations of the driving unit and the reading unit,
- wherein in a case where the driving unit supplies a driving signal to any of the driving lines during emission of radiation, the control unit controls the driving unit to sequentially supply, after the emission of radiation, driving signals to the rest of the plurality of driving lines which are other than the any of the driving lines to which the driving signal has been supplied during the emission of radiation.
5 more elements
A radiation imaging system comprising:
- a radiation imaging apparatus comprising:
- a pixel unit including a plurality of elements arranged in a matrix and configured to generate charges based on emission of radiation, a plurality of driving lines connecting the plurality of elements in each row, and a plurality of signal lines connecting the plurality of elements in each column;
- a bias supply unit configured to supply a bias voltage to the plurality of elements of the pixel unit;
- a driving unit configured to supply a driving signal to each of the plurality of driving lines;
- a reading unit configured to read, via the signal lines, signals based on charges from the elements connected to the driving line to which the driving signal is supplied;
- an image generation unit configured to generate a radiation image based on the signals read by the reading unit;
- and
- a control unit configured to control operations of the driving unit and the reading unit,
- wherein in a case where the driving unit supplies a driving signal to any of the driving lines during emission of radiation, the control unit controls the driving unit to sequentially supply, after the emission of radiation, driving signals to the rest of the plurality of driving lines which are other than the any of the driving lines to which the driving signal has been supplied during the emission of radiation;
- and
- a processing apparatus configured to acquire information regarding a radiation image from the radiation imaging apparatus and process the information.
8 more elements
A radiation imaging apparatus comprising:
- a plurality of pixels each including a conversion element configured to generate charges based on emission of radiation and a switching element connected to the conversion element;
- a plurality of driving lines configured to connect switching elements of the plurality of pixels in each row;
- a plurality of signal lines configured to connect the switching elements of the plurality of pixels in each column;
- a bias supply unit configured to supply a bias voltage to conversion elements of the plurality of pixels;
- a driving unit configured to supply a driving signal to each of the plurality of driving lines;
- a reading unit configured to read, via the signal lines, signals based on charges from the pixels connected to a driving line to which the driving signal is supplied;
- an image generation unit configured to generate a radiation image based on the signals read by the reading unit;
- and
- a control unit configured to control operations of the driving unit and the reading unit,
- wherein the plurality of pixels includes imaging pixels and correction pixels, and the plurality of driving lines includes a first driving line configured to connect the imaging pixels in each row and a second driving line configured to connect the imaging pixels and the correction pixels in each row, and
- wherein in a case where the driving unit supplies a driving signal to the second driving line during emission of radiation, the control unit controls the driving unit to sequentially supply, after the emission of radiation, the driving signal to the remaining first driving line except for the second driving line to which the driving signal has been supplied during the emission of radiation.
8 more elements
A radiation imaging apparatus comprising:
- a plurality of pixels each including a conversion element configured to generate charges based on emission of radiation and a switching element connected to the conversion element;
- a plurality of driving lines configured to connect switching elements of the plurality of pixels in each row;
- a plurality of signal lines configured to connect the switching elements of the plurality of pixels in each column;
- a bias supply unit configured to supply a bias voltage to conversion elements of the plurality of pixels;
- a driving unit configured to supply a driving signal to each of the plurality of driving lines;
- a reading unit configured to read, via the signal lines, signals based on charges from the pixels connected to a driving line to which the driving signal is supplied;
- an image generation unit configured to generate a radiation image based on the signals read by the reading unit;
- and
- a control unit configured to control operations of the driving unit and the reading unit,
- wherein the plurality of pixels includes imaging pixels and correction pixels, and the plurality of driving lines includes first driving lines configured to connect the imaging pixels in each row and a second driving line configured to connect the imaging pixels and the correction pixels in each row, and
- wherein the control unit controls the driving unit to perform a first operation to sequentially supply the driving signals to the first driving lines, and the image generation unit generates a radiation image based on the signals read by the reading unit by the first operation by the driving unit.
8 more elements
Dependencies are inferred from the claim text.