Abstract: A radiation imaging apparatus comprises a first diving circuit unit to drive a first switching element connected to a conversion element, wherein the conversion element converting radiation into charges, a second diving circuit unit to drive a second switching element connected to the conversion element, and a control unit to control the first diving circuit and the second diving circuit independently at different timing.

Abstract: A read out operation for reading out image data from a conversion circuit irradiated with a radiation, and a read out operation for reading out offset image data from the conversion circuit without irradiated with a radiation are selectively conducted, a control is conducted to repeat at a plurality of times the operation for reading out the offset image data, offset data corresponding to each pixel is extracted from one of the plurality of the offset image data to generate corrective offset image data such that offset data corresponding to all the pixels in a row of the matrix is not extracted from one of the plurality of offset image data, and the corrective offset image data is subtracted from the image data to perform an offset correction to render line noise less noticeable, for an offset correction without line noise by a simple signal processing to be provided.

Abstract: An electronic cassette type of radiation detection apparatus having a sensor array including a plurality of sensors for detecting incident radiation has a connecting portion to which detachable additional function modules are connected. A selection unit is provided for changing a radiographing mode from a still image radiographing mode and a moving image radiographing mode into a selectable state in response to a connection of at least one of the additional function modules changes.

Abstract: An imaging apparatus capable of reducing a line noise artifact in a simple configuration without complicated operations includes: a plurality of pixels arranged in row and column directions and having a photoelectric conversion element and a switch element; a plurality of signal wirings connected to the plurality of switch elements in the column direction; a read-out circuit connected to the plurality of signal wirings; and a power source for supplying a voltage to the photoelectric conversion element. With the configuration, the plurality of pixels are classified into a plurality of groups, and the power sources are independently provided for each of the plurality of groups.

Abstract: For reducing extremely conspicuous line noise appearing in a picked up image with a simple configuration without complicating the configuration of an apparatus, an imaging apparatus a first sampling and holding circuit for sampling and holding an electric signal from pixels in one column of the detection unit and a second sampling and holding circuit for sampling and holding and electric signal from pixels in the other column of the detection unit, and a control unit for controlling such that the first and second sampling and holding circuits perform the sampling and holding in mutually different timings.

Abstract: The invention intends to be able to perform a gain correction fully adequately. Hence, at the time of radiographing an object, a gain correction of the object image is performed based on a gain correction image (XRc1) derived by performing a light reset. On the other hand, at the time of radiographing an object, when a light reset is not performed, a gain correction of the object image is performed based on a gain correction image (XRc2) derived without performing the light reset.

Abstract: To provide a radiation imaging apparatus which is capable of both connecting state radiographing for radiographing with a C arm connected and non-connecting state radiographing for radiographing with the C arm disconnected, and is convenient and obtains high quality images, the apparatus includes: a flat panel detector; a holding unit for holding at least the flat panel detector; and a control unit for controlling the flat panel detector.

Abstract: An apparatus includes a detecting unit having pixels that converts radiation or light to electric signals; a drive circuit that drives the detecting unit; a read circuit that outputs the electric signals as image signals; a power supply unit that supplies voltages to the detecting unit, the drive circuit, and the read circuit; and a control unit that controls at least the drive circuit and the power supply unit. The control unit performs a first process of stopping the voltage supply operation to the detecting unit, with the voltage supply operations to the drive circuit and the read circuit maintained; a second process of driving the detecting unit; and a third process of stopping the voltage supply operations to the drive circuit and the read circuit.

Abstract: An electronic cassette type of radiation detection apparatus having a sensor array including a plurality of sensors for detecting incident radiation has a connecting portion to which detachable additional function modules are connected. A selection unit is provided for changing a radiographing mode from a still image radiographing mode and a moving image radiographing mode into a selectable state in response to a connection of at least one of the additional function modules changes.

Abstract: An apparatus includes a detector including a plurality of pixels which converts radiation or light into analog electric signals, a signal processor including a reading circuit which reads an analog electric signal output from the detector and an A/D convertor which converts the analog electric signal into a digital signal, a power-supply unit configured to apply bias to the detector and the signal processor. The apparatus further includes a controller configured to control at least one of the signal processor and the power-supply unit in accordance with information on an A/D conversion characteristic of the A/D convertor and information on an input analog electric signal to be input to the A/D convertor.

Abstract: First drive wirings electrically connected to output switching elements TT11 to TT63 in a plurality of n-th row pixels 111 and second drive wirings electrically connected to initializing switch elements TR11 to TR63 in a plurality of pixels 111 along a predetermined row are connected to a first drive circuit unit 121 arranged on a first side of a glass substrate 10. Third drive wirings electrically connected to output switching elements in a plurality of n+1-th row pixels 111 and fourth drive wirings electrically connected to initializing switch element in a plurality of pixels 111 along another row different from a predetermined row are connected to a second drive circuit unit 122 arranged along a second side in opposition to the first side of the glass substrate 10 sandwiching the converting unit 110 between the first and second sides.

Abstract: An apparatus includes a detection unit including a plurality of pixels that are arranged in a matrix and that are divided into at least first and second pixel groups, a signal processing unit including first and second readout circuits and first and second A/D converters, a power supply unit configured to supply the components included in the signal processing unit with respective biases, and a control unit configured to control at least one of the signal processing unit and the power supply unit. The control unit is configured to perform processing of altering an analog signal capable of being input into at least one of the first and second A/D converters or altering an A/D conversion characteristic of at least one of the first and second A/D converters.

Abstract: The invention intends to be able to perform a gain correction fully adequately. Hence, at the time of radiographing an object, a gain correction of the object image is performed based on a gain correction image (XRc1) derived by performing a light reset. On the other hand, at the time of radiographing an object, when a light reset is not performed, a gain correction of the object image is performed based on a gain correction image (XRc2) derived without performing the light reset.

Abstract: Provided is a radiation imaging apparatus including: a conversion unit including a plurality of pixels arranged two-dimensionally, wherein each of the pixels includes a conversion element for converting incident radiation into an electric charge and a switching element for transferring an electric signal based on the electric charge; a drive circuit unit for outputting, to the switching element, a drive signal having a voltage for turning on the switching element; a read-out circuit unit for reading out the electric signal from the pixel; a calculating unit for calculating the S/N ratio of the electric signal read out by the read-out circuit unit; and a determination unit capable of changing the voltage of the drive signal output from the drive circuit unit according to the S/N ratio calculated. As a result, the radiation imaging apparatus capable of improving the S/N ratio of the derived image is provided.

Abstract: A memory stores first image data for offset correction generated by performing an interlace scanning of the driving lines of odd rows only in a driving circuit unit. A memory stores second image data for offset correction generated by performing the interlace scanning of the driving lines of even rows only in the driving circuit unit. A processing unit synthesizes the first image data for offset correction and the second image data for offset correction, thereby to generate image data for offset correction of one frame portion, and an arithmetic operation unit performs an arithmetic operation processing on the radiation image data by using the image data for offset correction of one frame portion synthesized and generated, thereby to perform the offset correction of the radiation image data.

Abstract: A radiation imaging apparatus comprises a read unit reading electric signals from radiation detecting elements that are arranged two-dimensionally and that convert incident radiation into electric signals. A control unit controls the radiation detecting unit such that a first radiation detecting element is switched into a state in which charge generated therein cannot be taken out (a “senseless state”) and a second radiation detecting element is switched into a state in which it charge generated therein by incident radiation can be taken out (a “sensible state”), and a signal processing unit performs a subtraction processing such that the electric signal from the radiation detecting element that is in the senseless state is subtracted from the electric signal from the radiation detecting element that is in the sensible state, to reduce conspicuous line noise in an image by means of a relatively simple configuration.

Abstract: A photoelectric converter includes a plurality of substrates, which are located adjacent to each other and on which a plurality of photoelectric conversion devices are two-dimensionally arranged, and either scan circuits or detection circuits that are arranged on two opposing sides of the photoelectric converter, whereby scanning directions either from the scan circuits or from the detection circuits, which are arranged on the two opposing sides, are capable of being set so as to be performed in like directions.

Abstract: An electronic cassette type of radiation detection apparatus having a sensor array including a plurality of sensors for detecting incident radiation has a connecting portion to which detachable additional function modules are connected. A selection unit is provided for changing a radiographing mode from a still image radiographing mode and a moving image radiographing mode into a selectable state in response to a connection of at least one of the additional function modules changes.

Abstract: There is provided a radiation imaging apparatus delivering an output image with a satisfactory image quality irrespective of the dosage of the X-rays incident on the detector. The radiation imaging apparatus according to the present invention includes a detection unit for detecting as an image signal an X-ray irradiated from the an X-ray generation apparatus and penetrating through an object; a read out unit for amplifying and reading out the image signal detected by the detection unit; and a control unit for controlling at least one of the X-ray generation apparatus, the detection unit and the read out unit such that the obtained SN ratio of the image signal according to the dosage of the X-rays incident on the detector can be equal to the S/N ratio required for the image signal.

Abstract: If image data is input to an image processor (step S1), the image processor generates an integrated image sum (step S2). The image processor extracts a maximum output max from the integrated image sum (step S3). The image processor compares the maximum output max with a preset threshold (step S4). In this case, the threshold is set to 80% of the saturation amount. When the saturation amount is 3 V, the threshold is 2.4 V. If the maximum value max is smaller than the threshold, imaging continues. If the maximum value max is equal to or larger than the threshold, the integrated image sum is cleared to 0 (step S5), and refresh operation is performed.