摘要:
A radiation therapy system includes an X-ray imaging system that is configured with a combined and simplified filter and collimator positioning mechanism. In addition, an X-ray imager of the RT system is only positioned at a few discrete locations within a plane that is a fixed distance from the imaging X-ray source when generating X-ray images. As a result, for each of these discrete imaging positions, the simplified filter and collimator positioning mechanism positions a specific collimator-filter combination in a specific location between the X-ray source and the imager.
摘要:
A signal relay device comprises a first connection I/F, to which an emission switch is connected, a second connection I/F, to which an emission signal I/F of an electronic cassette is connected, and a third connection I/F, to which a switch I/F of a source control device is connected, and a signal processing unit. The signal processing unit generates an emission execution signal during a time period in which an emission command signal from the emission switch and an emission enable signal from the electronic cassette are inputted. The source control device drives an X-ray tube to allow X-ray emission while the emission execution signal is inputted.
摘要:
Provided is a radiation irradiation device that prevents degradation of a battery resulting from a high current that flows when radiation is generated. The radiation irradiation device includes a radiation generating part that generates radiation; a battery part that supplies electric power to the radiation generating part; and an exposure switch that receives an emission instruction of the radiation from the radiation generating part. The battery part has a lithium ion battery, a capacitor connected in parallel to the lithium ion battery, a switch element that performs switching from a state where electric power is supplied from the lithium ion battery to the capacitor to a state where electric power is supplied from the capacitor to the radiation generating part. The switch element switches between the states of the electric power supply according to an instruction received in the exposure switch.
摘要:
Provided herein is a radiography apparatus including an X-ray source configured to irradiate a subject radiation, and a sensing module configured to sense the radiation having passed through the subject, wherein the X-ray source includes a cathode electrode comprising an electric field emitting source configured to emit electrons, an anode electrode disposed opposite to the cathode electrode and configured to use the electrons to generate the radiation, and a current control unit connected to the cathode electrode to control an amount of the electrons.
摘要:
An imaging system (100) includes a radiation source (110) with a focal spot (204) that emits a beam of x-ray photons that traverses an examination region (106). The imaging system further includes a photon counting detector array (122) that detects a sub-set of the x-ray photons that traverse an examination region. The imaging system further includes a controller (116) that generates and transmits a pause signal, in response to a calculated drop in an intensity of the emitted the beam of x-ray photons below a predetermined intensity level, which causes the photon counting detector array to pause detecting the sub-set of the x-ray photons. The imaging system further includes a counter (136) that counts, for each of a plurality of counting periods, the x-ray photons of the sub-set detected by the photon counting detector array in the corresponding counting period.
摘要:
The present invention relates to signal and power supply transmission for an X-ray source. In order to provided an improved signal and power supply transmission with reduced constructional complexity and enhanced operation possibilities, an integrated signal and power supply transmission arrangement is provided, comprising a supply board (12), a main board (14), an insulating plate (16), at least one transformer arrangement (18), and at least one signal transmission arrangement (20). The insulating plate is provided between the supply and the main board. The transformer arrangement is provided to supply electric energy to the driving circuit of a transistor, which in turn feeds an X-ray source. The transformer arrangement comprises a primary electric conductor arranged on the supply board to cause electromagnetic induction in a secondary electric conductor arranged on the main board. The signal transmission arrangement is adapted to transmit a signal between the supply board and the main board; wherein the signal transmission arrangement comprises at least a first optical signal transmission device provided on the supply board, and a second optical signal transmission device (30) provided on the main board. The insulating plate is light-transmissive at least in the part between the first and second optical signal transmission device. The first and the second optical signal transmission devices are arranged in an optical connection path.
摘要:
An X-ray apparatus includes a control unit configured to acquire orientation information of an X-ray radiation unit and orientation information of X-ray detectors, select an X-ray detector among the X-ray detectors whose orientation information complements or matches the orientation information of the X-ray radiation unit, and generate a control signal; and a communication unit configured to transmit, to the X-ray detector which has been selected, the control signal generated in the control unit so that the selected X-ray detector becomes paired with the X-ray radiation unit for an X-ray imaging of an object.
摘要:
An FPD detects an X-ray image of an object. The FPD includes a plurality of pixels arranged in its image capturing field. Each pixel receives X-rays emitted from an X-ray source, and outputs a pixel value in accordance with an X-ray dose applied thereto. A pixel determiner determines a minimum-value pixel out of the pixels based on the pixel values of the pixels. The minimum-value pixel is a pixel whose pixel value is the lowest. The pixel determiner sets the minimum-value pixel as an exposure control pixel. A comparator compares a first integrated value, which is an integrated value of the pixel values of the minimum-value pixel, with a predetermined first threshold value. The comparator performs X-ray emission control such that, when the first integrated value has reached the first threshold value, the X-ray source stops emitting the X-rays.
摘要:
A method of setting operating conditions of a detector in an imaging system includes searching for a detector that is not registered in the imaging system; acquiring detector profile information from the searched detector; registering the detector based on the detector profile information; allocating a predetermined marker to the registered detector to represent activation or non-activation thereof; transmitting control information including the allocated predetermined marker to the detector; receiving detector correction information from the detector; and setting operating conditions of the detector based on the received detector correction information.
摘要:
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.