A mobile X-ray apparatus includes: an X-ray radiation device; a controller configured to control the X-ray radiation device; a power supply configured to supply operating power to the X-ray radiation device and the controller via a lithium ion battery and control overcurrent occurring during X-ray emission by the X-ray radiation device; and a charger configured to charge the power supply. Each of the controller, the power supply, and the charger is embodied in a physically separate module, and each of the power supply and the charger is encased in a metal case.

An inverter for a computed tomography (CT) system is provided. The inverter includes a hybrid switch. The hybrid switch includes a silicon carbide metal-oxide-semiconductor field-effect transistor (SiC MOSFET) portion, an insulated-gate bipolar transistor (IGBT) portion, a first gate associated within the SiC MOSFET portion, and a second gate associated with the IGBT portion. The SiC MOSFET portion and the IGBT portion of the hybrid switch are configured to be independently controlled via the first gate and the second gate.

An inverter for a computed tomography (CT) system is provided. The inverter includes a hybrid switch. The hybrid switch includes a silicon carbide metal-oxide-semiconductor field-effect transistor (SiC MOSFET) portion, an insulated-gate bipolar transistor (IGBT) portion, a first gate associated within the SiC MOSFET portion, and a second gate associated with the IGBT portion. The SiC MOSFET portion and the IGBT portion of the hybrid switch are configured to be independently controlled via the first gate and the second gate.

A mobile X-ray apparatus includes: an X-ray radiation device configured to emit X-rays; a controller configured to control the X-ray radiation device; a power supply configured to supply operating power to the X-ray radiation device and the controller from a lithium ion battery and control overcurrent that occurs during emission of the X-rays by the X-ray radiation device; and a charger configured to charge the power supply.

A mobile X-ray apparatus includes: an X-ray radiation device configured to emit X-rays; a controller configured to control the X-ray radiation device; a power supply configured to supply operating power to the X-ray radiation device and the controller from a lithium ion battery and control overcurrent that occurs during emission of the X-rays by the X-ray radiation device; and a charger configured to charge the power supply.

Provided is a radiation irradiation device and method in which radiation intensity can be adjusted depending on an irradiation position. The device includes a radiation source, a target plate having an irradiation hole through which radiation emitted from the radiation source passes and having a first target stopper and a second target stopper formed to protrude on both surfaces, respectively, X-axis shield plates and Y-axis shield plates coupled to both sides of one surface of the target plate and including shield stoppers formed on a contact surface with the target plate and capable of being moved with respect to the target plate. The X-axis shield plate are coupled laterally with shield stoppers capable of moving laterally and the Y-axis plate are coupled longitudinally with shield stoppers capable of moving longitudinally. The shield stoppers can be moved between two first target stoppers or two second target stoppers adjacent to each other.

Provided is a radiation irradiation device and method in which radiation intensity can be adjusted depending on an irradiation position. The device includes a radiation source, a target plate having an irradiation hole through which radiation emitted from the radiation source passes and having a first target stopper and a second target stopper formed to protrude on both surfaces, respectively, X-axis shield plates and Y-axis shield plates coupled to both sides of one surface of the target plate and including shield stoppers formed on a contact surface with the target plate and capable of being moved with respect to the target plate. The X-axis shield plate are coupled laterally with shield stoppers capable of moving laterally and the Y-axis plate are coupled longitudinally with shield stoppers capable of moving longitudinally. The shield stoppers can be moved between two first target stoppers or two second target stoppers adjacent to each other.

A radiation apparatus conducts a subtraction imaging process where a holder 25 begins to shift when a radiation output ends relative to a first radiation in association with the subtraction imaging and then, once the filter is switched by shifting the holder 25 and when switching of the filter is actually measured, the X-ray tube outputs the radiation in association with a second imaging. With this structure, dual filter is not required to be switched and the imaging can be conducted immediately after an operator so instructs regardless the dual filter phase. The second imaging can be performed immediately after confirming the dual filter is switched in fact.

A mobile X-ray apparatus includes: an X-ray radiation device configured to emit X-rays; a controller configured to control the X-ray radiation device; a power supply configured to supply operating power to the X-ray radiation device and the controller from a lithium ion battery and control overcurrent that occurs during emission of the X-rays by the X-ray radiation device; and a charger configured to charge the power supply.

A mobile X-ray apparatus includes: an X-ray radiation device configured to emit X-rays; a controller configured to control the X-ray radiation device; a power supply configured to supply operating power to the X-ray radiation device and the controller from a lithium ion battery and control overcurrent that occurs during emission of the X-rays by the X-ray radiation device; and a charger configured to charge the power supply.