Abstract: This radiation imaging system has a radiation source, a case, and a radiation detection device which is housed in the case, and is equipped with a radiation detector having a conversion unit that converts radiation from the radiation source, which has passed through at least a subject, to radiation image information, wherein a prediction is made as to whether the afterimage phenomenon has occurred in the conversion unit, and if it is predicted that the phenomenon has occurred, at least the conversion unit is moved.

Abstract: A determination section of an FPD checks external information against a determination table and determines whether detection of a rise of X-ray pulses is allowed based on an output voltage from a short-circuited pixel. The FPD detects X-ray images. The external information is transmitted from an imaging control device. The X-ray pulses are sequentially generated by an X-ray generating apparatus. A controller selects a pulse irradiation mode in a case where the detection of the rise of the X-ray pulse is allowed. If not, a successive irradiation mode is selected. In the pulse irradiation mode, the rise and the fall of the X-ray pulse are detected and timing of storage operation is synchronized with the detected timing of the rise. In the successive irradiation mode, the storage operation is performed at predetermined time intervals without the detection of the rise and the fall of the X-ray pulse.

Abstract: The present invention pertains to a radiography system and a radiography method. A radiation output device has a plurality of radiation sources disposed along a predetermined plane. Also, in accordance with whether an imaging state is a still image mode or a moving picture mode, at least one of the radiation sources that outputs radiation among the plurality of radiation sources is selected.

Abstract: A radiation image detection apparatus includes a control unit, during a irradiation detection mode, stops supplying of an operating power to a data processing unit until irradiation of radiation is detected by an irradiation detection unit, and when the irradiation of radiation is detected by the irradiation detection unit, the control unit proceeds to a photographing mode and begins supplying the operating power to the data processing unit.

Abstract: A radiation imaging system that can continuously use sections of a radiation imaging device that has not been damaged and a radiation imaging device are provided. The radiation imaging system comprises: a radiation device that applies radiation; and the radiation imaging device with an imaging panel that captures images of the applied radiation. The radiation imaging device comprises: a failure cause detection unit that detects environmental noise or falls that cause failures in the radiation imaging device; a malfunction diagnostic unit that, in a case where a detected environmental noise value reaches a threshold value or in a case where a fall has been detected, diagnoses a malfunction in the radiation imaging device; and a function limiting unit that applies limits to the radiation imaging device functions that are used continuously, in accordance with the diagnosis results of the malfunction diagnostic unit.

Abstract: A radiographic video processing device includes: an acquisition section that acquires gradation signals expressing charges; and a control section that, if capture of a video image formed from plural frames is being performed with a radiation detector, and a number of the pixels, from which charges are combined and read by switching elements included in adjacent pixels of the radiation detector, has been increased, effects control such that, from a frame at a time of the increase up until a predetermined frame, the gradation signals distributed in a higher density range than that for frames subsequent to the predetermined frame are used as image data.

Abstract: A radiation detector and a radiological image radiographing apparatus capable of improving the quality of an obtained radiological image without causing an additional cost are provided. A first scintillator configured to include columnar crystals generating first light corresponding to a radiation emitted through a TFT substrate is laminated on the other surface of the TFT substrate that has a first photoelectric conversion element, which has one surface from which a radiation is emitted and the other surface from which at least one of the first light and the second light is emitted and which generates electric charges corresponding to the light, and a first switching element. A second scintillator which generates second light corresponding to a radiation emitted through the first scintillator and has different energy characteristics of absorbed radiations from the first scintillator is laminated on a surface of the first scintillator not facing the TFT substrate.

Abstract: A radiation detector and a radiological image radiographing apparatus capable of improving the quality of an obtained radiological image without causing an additional cost are provided. A first scintillator configured to include columnar crystals generating first light corresponding to a radiation emitted through a TFT substrate is laminated on the other surface of the TFT substrate that has a first photoelectric conversion element, which has one surface from which a radiation is emitted and the other surface from which at least one of the first light and the second light is emitted and which generates electric charges corresponding to the light, and a first switching element. A second scintillator which generates second light corresponding to a radiation emitted through the first scintillator and has different energy characteristics of absorbed radiations from the first scintillator is laminated on a surface of the first scintillator not facing the TFT substrate.

Abstract: The radiographic imaging device including: a radiation detector comprising plural radiographic image acquisition pixels, which are arranged in a matrix in an imaging region, for capturing a radiographic image and that acquire image information representing the radiographic image by converting applied radiation into electric charges and storing the electric charges, and a plural radiation detection pixels that detect the applied radiation by converting the applied radiation into electric charges and storing the electric charges, a subset of the plural radiation detection pixels having different characteristics; and a detecting unit that uses the radiation detection pixels selectively according to the different characteristics to detect a state of application of the radiation.

Abstract: The present invention provides a radiographic image detector that may maintain even resolution in 6 directions before and after 3-pixel binning process or 4-pixel binning process. A radiation detector is disposed with plural pixels that have hexagonal shaped pixel regions, arrayed in a honeycomb pattern. Scan lines connected to TFT switches in each of the pixels are disposed one for each of the pixel rows. Grouped scan lines are also disposed one for each of the pixel rows for reading and combining 3 pixels or 4 pixels worth of charges at the same timing for plural pixel groups, each configured from 3 pixels or 4 pixels in a radiation detection element. ON signals are simultaneously sent by the grouped scanned lines to the TFT switches to perform 3-pixel binning or 4-pixel binning.

Abstract: There is provided a radiographic imaging device including: a radiation detector including plural radiographic image acquisition pixels that are arranged in a matrix in an imaging region for capturing a radiographic image and that acquire image information representing the radiographic image by converting applied radiation into electric charges and storing the electric charges and plural radiation detection pixels that are arranged in the imaging region, that have mutually different characteristics, and that detect the applied radiation by converting the applied radiation into electric charges and storing the electric charges; and a detecting unit that uses the radiation detection pixels selectively according to the characteristics to detect a state of application of the radiation.

Abstract: There is provided a radiographic imaging system that has: a radiographic imaging device at which fluoroscopic imaging, that carries out capturing of radiographic images continuously, is possible; a radiation irradiating device that irradiates radiation in a pulse form with respect to the radiographic imaging device at a time of fluoroscopic imaging; and a controller that controls the radiation irradiating device such that radiation is pulse-irradiated at the radiographic imaging device with a proportion of an irradiation time period of radiation being set within a range of 12.5% to 80% with respect to each frame time period for capturing respective frame images according to a frame rate of fluoroscopic imaging, while capturing of radiographic images is carried out at the radiographic imaging device synchronously with the pulse irradiation.

Abstract: A radiation image detection apparatus, includes: a control unit configured to drive an imaging unit so that a radiation image data is acquired, an image receiving unit is reset after acquiring the radiation image data, and a dark image data is acquired; in which: the control unit changes at least one of a reset time of the image receiving unit and a reduction ratio of an reduced image data on the basis of the communication speed by such that the transmission of the reduced image data is completed at least prior to reading-out an electrical charge signal from the image receiving unit when acquiring the dark image.

Abstract: A radiological image-capturing device includes: a first read control section that executes a first read mode in which electric signals stored in a plurality of pixels are read out simultaneously in units of a plurality of rows; and an emission-start determining section that determines that the emission of radiation from a radiation source onto an image-capturing panel has started when the values of the electric signals read by the first read control section have become greater than an arbitrarily settable threshold. If it is determined by the emission-start determining section that the emission of the radiation has started, the first read control section terminates the reading of the electric signals, and thereby brings the image-capturing panel into an exposure state.

Abstract: A flat panel detector has pixels for obtaining image signals and detective pixels for detecting the amount of incident x-rays. A signal processing circuit is of a pipeline-type, wherein first and second buffer memories are connected to the output of an A/D converter. In a dose detecting operation, the signal processing circuit repeats primary cycles alternately with secondary cycles of a shorter length than the primary cycles. In the primary cycle, a dose detection signal based on electric charges from the detective pixels is input in the first buffer memory and, simultaneously, a dummy signal is output from the second buffer memory. In secondary cycle, the dose detection signal is output from the first buffer memory and, simultaneously, a second dummy signal is input in the second buffer memory. On the basis of the dose detection signals, a start-of-radiation detector detects the start of x-ray radiation.

Abstract: The present invention may suppress feedthrough components in video imaging. Namely, TFT driving waveforms are plurally overlapped, and an integration period of capacitors C of amplification circuits is set so as to encompass a generation period of a feedthrough component (OFF), a generation period of a feedthrough component (ON), and a period in which charges (a signal component) are read out from storage capacitors of pixels by ON states of the TFTs. A number of driving waveforms to be overlapped is determined in accordance with a frame rate, the integration period and a reset period, or the like.

Abstract: The present invention provides a radiographic image detector that may maintain even resolution in 6 directions before and after 3-pixel binning process or 4-pixel binning process. A radiation detector is disposed with plural pixels that have hexagonal shaped pixel regions, arrayed in a honeycomb pattern. Scan lines connected to TFT switches in each of the pixels are disposed one for each of the pixel rows. Grouped scan lines are also disposed one for each of the pixel rows for reading and combining 3 pixels or 4 pixels worth of charges at the same timing for plural pixel groups, each configured from 3 pixels or 4 pixels in a radiation detection element. ON signals are simultaneously sent by the grouped scanned lines to the TFT switches to perform 3-pixel binning or 4-pixel binning.

Abstract: A radiological image-capturing device includes: a first read control section that executes a first read mode in which electric signals stored in a plurality of pixels are read out simultaneously in units of a plurality of rows; and an emission-start determining section that determines that the emission of radiation from a radiation source onto an image-capturing panel has started when the values of the electric signals read by the first read control section have become greater than an arbitrarily settable threshold. If it is determined by the emission-start determining section that the emission of the radiation has started, the first read control section terminates the reading of the electric signals, and thereby brings the image-capturing panel into an exposure state.

Abstract: The present invention may suppress feedthrough components in video imaging, Namely, TFT driving waveforms are plurally overlapped, and an integration period of capacitors C of amplification circuits is set so as to encompass a generation period of a feedthrough component (OFF), a generation period of a feedthrough component (ON), and a period in which charges (a signal component) are read out from storage capacitors of pixels by ON states of the TFTs. A number of driving waveforms to be overlapped is determined in accordance with a frame rate, the integration period and a reset period, or the like.

Abstract: An X-ray imaging apparatus includes an FPD and short-circuited pixels. The FPD has pixels arranged in arrays for detecting an X-ray image. The short-circuited pixels detect a radiation dose of X-rays in the FPD. The X-ray imaging apparatus is changed over between first and second operating modes. The first operating mode is selected in case of combining with an X-ray generating apparatus with communication compatibility, and performs an exposure control for controlling a total radiation dose according to a detection signal from the short-circuited pixels. The second operating mode is selected in case of combining with an X-ray generating apparatus with communication incompatibility, and performs control of start synchronization for synchronizing operation of the FPD with the emission start of X-rays according to a detection signal from the short-circuited pixels. Thus, control of the X-ray imaging apparatus is changed over appropriately.