Abstract:
An imaging control unit performs conventional scanning, which directs a rotation mechanism to rotate a radiation source and a radiation detector without changing a positional relationship between a subject, and the radiation source and the radiation detector in a rotation axis direction, directs the radiation source to emit radiation whenever the radiation source and the radiation detector are rotated by a preset angle, and directs the radiation detector to output a projection image, at a plurality of height positions along the rotation axis direction. The image processing unit generates a tomographic image on the basis of the projection images obtained at the plurality of height positions.
Abstract:
A radiation detector includes a flexible substrate; a plurality of pixels provided on a first surface of the substrate to accumulate electrical charges generated in accordance with light converted from radiation; and a terminal region part formed with a plurality of terminal regions each including terminals connected to a predetermined pixel group including some of the plurality of pixels and formed on the first surface of the substrate.
Abstract:
A radiographic imaging device includes: a radiation detector including plural pixels, each including a sensor portion and a switching element; a detection unit that detects a radiation irradiation start if an electrical signal caused by charges generated in the sensor portion satisfies a specific irradiation detection condition, and/or if an electrical signal caused by charges generated in a radiation sensor portion that is different from the sensor portion satisfies a specific irradiation detection condition; and a control unit that determines whether or not noise caused by external disturbance has occurred after the detection unit has detected the radiation irradiation start, and if the noise has occurred, that stops a current operation of the radiation detector, and causes the detection unit to perform detection.
Abstract:
In a radiation image processing apparatus, method, and program, performing image processing based on scattered radiation, such as scattered radiation elimination processing, accurately by taking into account the influence of scattered radiation from an area adjacent to a processing target area. For this purpose, performing image processing on a radiation image captured by applying radiation to a subject based on scattered radiation generated by the subject. In this case, a processing target area which is the processing target in the radiation image is added with another area different from the processing target area in the radiation image. Then, the image processing based on scattered radiation is performed on the processing target area using the another area and the processing target area.
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:
A radiation detection device has: a scintillator for converting radiation into fluorescence; a photoelectric conversion unit for converting the fluorescence into an electric signal; and a reset light source unit for exposing reset light to the photoelectric conversion unit. A system control unit has an optical reset disabling unit for, based on a reset disabling instruction, disabling the exposure of the reset light output from the reset light source unit.
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:
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:
In the case where a radiation exposure dose of a human body that includes an artificial object is obtained based on a radiation image signal detected by a radiation image detector through the application of radiation transmitted through the human body, information of the artificial object included in the human body is obtained and, in the case where information indicating that an artificial object is included in the human body is obtained as the information of the artificial object, a correction is performed to increase the radiation exposure dose, which is based on the radiation image signal, by a predetermined correction radiation exposure dose.
Abstract:
In a case where a radiation exposure dose of a subject is obtained in a radiation exposure dose obtaining apparatus based on a radiation image signal of each frame detected by a radiation image detector by continuously performing radiological imaging of the subject due to the continuous radiological imaging, an area corresponding to a region of the subject is set in an image represented by the radiation image signal and a radiation exposure dose is obtained for each set area.