A dose rate monitoring device includes: a first energy compensation coefficient operation part obtaining a first energy compensation coefficient to incident radiation using the first compensation coefficient table, a first dose rate operation part obtaining a first compensation dose rate of incident radiation using the first energy compensation coefficient and G (E) function, a second energy compensation coefficient operation part obtaining a second energy compensation coefficient to incident radiation using a second compensation coefficient table, a second dose rate operation part obtaining a second compensation dose rate of incident radiation using a second energy compensation coefficient, a dose rate switching section which select an output according to the magnitude of a ratio of the first compensation dose rate to the second compensation dose rate, and a display operating section which displays the first compensation dose rate or the second compensation dose rate which the dose rate switching section outputs.

A dose rate monitoring device includes: a first energy compensation coefficient operation part obtaining a first energy compensation coefficient to incident radiation using the first compensation coefficient table, a first dose rate operation part obtaining a first compensation dose rate of incident radiation using the first energy compensation coefficient and G (E) function, a second energy compensation coefficient operation part obtaining a second energy compensation coefficient to incident radiation using a second compensation coefficient table, a second dose rate operation part obtaining a second compensation dose rate of incident radiation using a second energy compensation coefficient, a dose rate switching section which select an output according to the magnitude of a ratio of the first compensation dose rate to the second compensation dose rate, and a display operating section which displays the first compensation dose rate or the second compensation dose rate which the dose rate switching section outputs.

The method is used to control a radiological apparatus (100) through a) a control unit (130) adapted to activate the emission of X-rays by an X-ray emitter (110) of the radiological apparatus at the beginning of an exposure and to deactivate the emission of X-rays by said X-ray emitter (110) subsequently, and b) an X-ray transducer (140) associated with an image detector (120) of the radiological apparatus; the control unit (130) repeatedly determines, preferably with a predetermined period “df”, a predicted value of total X-ray dose based on a signal received from said X-ray transducer (140), and deactivates the emission of X-rays based at least on said predicted value; in order to determine the predicted value, the control unit (130) repeatedly performs estimates of the total X-ray dose according to a model; one or more parameters of the model are determined and modified during the operation of the radiological apparatus (100).

The method is used to control a radiological apparatus (100) through a) a control unit (130) adapted to activate the emission of X-rays by an X-ray emitter (110) of the radiological apparatus at the beginning of an exposure and to deactivate the emission of X-rays by said X-ray emitter (110) subsequently, and b) an X-ray transducer (140) associated with an image detector (120) of the radiological apparatus; the control unit (130) repeatedly determines, preferably with a predetermined period “df”, a predicted value of total X-ray dose based on a signal received from said X-ray transducer (140), and deactivates the emission of X-rays based at least on said predicted value; in order to determine the predicted value, the control unit (130) repeatedly performs estimates of the total X-ray dose according to a model; one or more parameters of the model are determined and modified during the operation of the radiological apparatus (100).

A method for the real-time control of exposure to an X-ray dose emitted by a generator tube for generating an X-ray beam and received by a detector includes a flat panel detector, comprising a set of pixels organized into a matrix along rows and columns and configured so as to generate signals on the basis of the X-ray dose impinging on the detector, the generator tube comprising a control unit for controlling the generator tube that is configured so as to control an emitted X-ray dose, the control method comprising the following steps: exposing the flat panel detector to an X-ray dose emitted by the generator tube for generating an X-ray beam; repeatedly reading out at least one of the rows of pixels while the flat panel detector is exposed to the X-ray dose; determining a payload signal and a stray signal based on the signals from the readout of the at least one of the rows; transmitting the payload signal to the control unit for controlling the generator tube.

A control apparatus that controls, using automatic exposure control of controlling a radiation generation apparatus by comparing a radiation dose from the radiation generation apparatus with a target dose, radiation imaging using radiation from the radiation generation apparatus, comprises a processing unit that executes image processing on a radiation image obtained by the radiation imaging; and a setting unit that sets, as the target dose used in the automatic exposure control, a dose which is changed in accordance with an image processing parameter for executing the image processing.

A radiation imaging system is provided. The system comprises: an imaging unit including a plurality of pixels configured to generate a radiation image and a detection unit configured to detect incident radiation to perform exposure control; an irradiation control unit configured to control radiation irradiation by a radiation source, an obtainment unit configured to obtain a delay time of communication between the imaging unit and the irradiation control unit; and a determination unit. The determination unit determines, based on a radiation irradiation condition set by an operator and the delay time obtained by the obtainment unit, whether to permit imaging by exposure control using a signal output from the detection unit.

A detection unit detects a region of a surgical tool in a radiographic image of a patient. In a case in which the surgical tool is detected, a display control unit displays the radiographic image on a display unit such that the detected region of the surgical tool is highlighted.

A detection unit detects a region of a surgical tool in a radiographic image of a patient. In a case in which the surgical tool is detected, a display control unit displays the radiographic image on a display unit such that the detected region of the surgical tool is highlighted.

A radiation imaging system includes a two-dimensional array in which a plurality of elements which detect radiation are two-dimensionally arrayed. The plurality of elements includes a plurality of detectors usable for exposure control of stopping radiation irradiation in accordance with a fact that a radiation irradiation dose has reached a target irradiation dose. The radiation imaging system includes a controller configured to determine, based on a setting of a reading manner of signals from the plurality of detectors, a minimum irradiation time required from the start of radiation irradiation until the stop of radiation irradiation according to signals from the two-dimensional array and perform an error process when the minimum irradiation time exceeds a reference irradiation time.