An X-ray diagnosis system comprises an inter-capacitor terminal, a first inter-switching-element terminal, a second inter-switching-element terminal, and a third inter-switching-element terminal, wherein the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply three-phase alternating current power, and the inter-capacitor terminal and two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply two-phase alternating current power.

Provided is a mobile X-ray apparatus including: an X-ray radiator configured to emit X-rays; a battery configured to supply power to the X-ray radiator; a charger configured to charge the battery; a battery management system (BMS) configured to receive power from the battery or the charger and output a first signal based on a state of the battery; and a first switch configured to be turned off according to the first signal to prevent power from being supplied to the BMS, wherein the first switch is further configured to be turned on by power supplied from the charger when the BMS is shut down.

Provided is a mobile X-ray apparatus including: an X-ray radiator configured to emit X-rays; a battery configured to supply power to the X-ray radiator; a charger configured to charge the battery; a battery management system (BMS) configured to receive power from the battery or the charger and output a first signal based on a state of the battery; and a first switch configured to be turned off according to the first signal to prevent power from being supplied to the BMS, wherein the first switch is further configured to be turned on by power supplied from the charger when the BMS is shut down.

An X-ray diagnostic apparatus according to an embodiment includes: an X-ray tube including a target configured to generate X-rays in response to emission of electrons thereto, a plurality of filaments configured to emit electrons into substantially the same position on the target, and a grid used in common among the plurality of filaments; intermediate potential setting circuitry configured to set intermediate potential in a position between the plurality of filaments and the target by using the grid; and filament potential controlling circuitry configured to change one or more filaments selected from among the plurality of filaments to emit the electrons to the target, by controlling potential levels of the plurality of filaments with respect to the intermediate potential for each filament, in conjunction with switching of X-ray tube voltage.

An X-ray diagnostic apparatus according to an embodiment includes: an X-ray tube including a target configured to generate X-rays in response to emission of electrons thereto, a plurality of filaments configured to emit electrons into substantially the same position on the target, and a grid used in common among the plurality of filaments; intermediate potential setting circuitry configured to set intermediate potential in a position between the plurality of filaments and the target by using the grid; and filament potential controlling circuitry configured to change one or more filaments selected from among the plurality of filaments to emit the electrons to the target, by controlling potential levels of the plurality of filaments with respect to the intermediate potential for each filament, in conjunction with switching of X-ray tube voltage.

Provided is a radiation imaging system configured to synchronize radiation irradiation with operation of a radiation imaging apparatus. The radiation imaging system includes: an irradiation unit arranged to irradiate with radiation; a detection unit arranged to detect the radiation; a setting unit configured to set an irradiation time at which irradiation of the radiation is to be started; an irradiation control unit configured to control the irradiation unit so that radiation irradiation is executed at the irradiation time; and a detection control unit configured to control the detection unit so that the detection unit is ready to detect the radiation at the irradiation time.

An X-ray device may comprise a timer for monitoring a nonoperation time, such as a time from a previous signal input to a control circuit to the next input signal. When the timer detects that the nonoperation time has exceeded a preset time, the control circuit controls the contactors and so as to turn off the contactors. The standby power of the X-ray device when the frequency of use during the nonoperation time is low can be reduced. Further, when the next signal is input to the control circuit, the control circuit controls the contactors so as to close the contactors, thereby restoring power supply. Therefore, when the next signal is input to the control circuit, the X-ray device is turned to a usable state.

An X-ray device may comprise a timer for monitoring a nonoperation time, such as a time from a previous signal input to a control circuit to the next input signal. When the timer detects that the nonoperation time has exceeded a preset time, the control circuit controls the contactors and so as to turn off the contactors. The standby power of the X-ray device when the frequency of use during the nonoperation time is low can be reduced. Further, when the next signal is input to the control circuit, the control circuit controls the contactors so as to close the contactors, thereby restoring power supply. Therefore, when the next signal is input to the control circuit, the X-ray device is turned to a usable state.

A radiation irradiating apparatus includes a radiation generator that generates radiation and a switch that controls emission of the radiation from the radiation generator. The radiation generator and the switch are constituted by separate housings. The radiation generator and the switch are attachable and detachable to and from each other via a surface of a portion of each of the housings thereof.

A radiation irradiating apparatus includes a radiation generator that generates radiation and a switch that controls emission of the radiation from the radiation generator. The radiation generator and the switch are constituted by separate housings. The radiation generator and the switch are attachable and detachable to and from each other via a surface of a portion of each of the housings thereof.