An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.

A system for grid control of an electromagnetic ray tube is provided. The system includes a power source, a rectifier, and a grid conductor. The power source is disposed apart from the electromagnetic ray tube and operative to generate an AC current. The rectifier is integrated into the electromagnetic ray tube and electrically coupled to a grid electrode of the electromagnetic ray tube. The grid conductor electrically couples the power source to the rectifier. The rectifier is operative to convert the AC current to a DC current that powers the grid electrode.

An X-ray imaging apparatus includes an X-ray source to generate and irradiate X-rays; an X-ray detector installed in at least one module of one or more modules, to detect the irradiated X-rays; an Identification (ID) resistor included in the module; a port included in the X-ray detector; and a controller to determine a module in which the X-ray detector has been installed, using the ID resistor and the port. The controller may assign a static Information Provider (IP) address to the module, and determine a module in which the X-ray detector has been installed, based on the static IP address. According to the X-ray imaging apparatuses and a control method thereof, it is possible to determine an installation location of the X-ray detector, and to use the X-ray detector in various modules without having to provide separate X-ray detectors for different locations.

A portable radiation imaging apparatus configured to wirelessly communicate with a radiation generation apparatus includes a radiation image sensor including a two-dimensional arrangement of a plurality of detection elements configured to detect a radiation generated by the radiation generation apparatus, a wireless communication unit configured to receive a generation condition of the radiation generated by the radiation generation apparatus, a storage unit configured to store the received generation condition and radiation image data obtained by the radiation image sensor in association with each other, and a housing configured to accommodate the radiation image sensor, the wireless communication unit, and the storage unit.

A portable radiation imaging apparatus configured to wirelessly communicate with a radiation generation apparatus includes a radiation image sensor including a two-dimensional arrangement of a plurality of detection elements configured to detect a radiation generated by the radiation generation apparatus, a wireless communication unit configured to receive a generation condition of the radiation generated by the radiation generation apparatus, a storage unit configured to store the received generation condition and radiation image data obtained by the radiation image sensor in association with each other, and a housing configured to accommodate the radiation image sensor, the wireless communication unit, and the storage unit.

Some embodiments include a system, comprising: an enclosure configured to enclose a vacuum; a cathode disposed within the enclosure; an anode disposed within the enclosure configured to receive a beam of electrons from the cathode; a motor disposed within the enclosure and configured to rotate the anode in response to a drive input; and a circuit electrically connected to the drive input, and configured to generate a phase signal based on a voltage of the drive input and a current of the drive input, the phase signal indicating a phase difference between the voltage of the drive input and the current of the drive input.

An X-ray fluoroscopic imaging apparatus is capable of easily setting a region of interest and maintaining a source object distance, such as in cases where a mechanism for moving a top board upward and downward is not provided or even in cases where it is desired to perform control without moving the top board upward and downward. In some examples, a C-arm supports an X-ray tube and a flat panel detector to face each other. An examination table equipped with a movable top board is movable in a longitudinal direction and inclinable. The movable top board may be moved in the longitudinal direction in a state in a which an inclination angle is maintained until a position in a perpendicular direction with respect to the movable top board after inclination changed matches a position in the perpendicular direction with respect to the movable top board before the inclination with respect to a height in the vertical direction and move a C-arm by a distance moved in parallel to a horizontal plane.

A radiation tube that is used in a radiation source for radiography includes: an electron emitting unit that includes a cathode unit having an emitter electrode which emits electrons and a gate electrode; an anode unit that has an anode surface facing the cathode unit and collides with the electrons to generate radiation; a constant voltage supply unit that supplies a constant driving voltage to the gate electrode; and a vacuum tube that accommodates the constant voltage supply unit, the electron emitting unit, and the anode unit.

A beam injector may include a cathode emitter to emit electrons and an electrode to bias at least a portion of the electrons to remain on the cathode emitter and focus the emitted electrons into an electron beam. The beam injector may also include a resistor coupled between the cathode emitter and the electrode and configured to allow self-regulation of a voltage potential on the electrode based at least in part on a current of the electron beam.

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.