A system for compensating for a back emission current in an X-ray generator is provided. The system includes a transformer, a common, and a voltage source. The transformer is operative to provide power to an electron emitter of the X-ray generator. The common is electrically coupled to an anode of the X-ray generator. The anode is operative to receive electrons emitted by the electron emitter such that the back emission current is generated between the common and the electron emitter. The voltage source electrically couples the common to the transformer and is operative to generate an offset voltage that reduces the back emission current.

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; and a charger configured to charge the power supply. The power supply includes a lithium ion battery including a plurality of battery cells, at least one current sensor configured to detect current of the lithium ion battery, and a battery management system (BMS) configured to detect an occurrence of an overcurrent in the lithium ion battery via the at least one current sensor in response to receiving an X-ray emission preparation signal, and to control an on-state or an off-state of a discharge current path in which a discharge current flows from the lithium ion battery to the controller and the X-ray radiation device.

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; and a charger configured to charge the power supply. The power supply includes a lithium ion battery including a plurality of battery cells, at least one current sensor configured to detect current of the lithium ion battery, and a battery management system (BMS) configured to detect an occurrence of an overcurrent in the lithium ion battery via the at least one current sensor in response to receiving an X-ray emission preparation signal, and to control an on-state or an off-state of a discharge current path in which a discharge current flows from the lithium ion battery to the controller and the X-ray radiation device.

An X-ray imaging apparatus operates by selecting an appropriate exposure sensitivity corresponding to the X-ray detector to be used. In the apparatus, an exposure sensitivity corresponding to the flat panel detectors used for an X-ray imaging is selected from multiple exposure sensitivities stored in an exposure sensitivity memory unit of the console, and the selected exposure sensitivity is displayed on the display unit of the high-voltage unit. An exposure control is executed based on the exposure sensitivity corresponding to the flat panel detectors used for the X-ray imaging, which is selected from multiple exposure sensitivities stored in an exposure sensitivity memory unit. The exposure control unit of the high-voltage unit suspends the X-ray irradiation from the X-ray tube when an integrated value of the X-ray detected by the X-ray dose sensor reaches to the setting-value set relative to the selected exposure sensitivity.

An X-ray imaging apparatus operates by selecting an appropriate exposure sensitivity corresponding to the X-ray detector to be used. In the apparatus, an exposure sensitivity corresponding to the flat panel detectors used for an X-ray imaging is selected from multiple exposure sensitivities stored in an exposure sensitivity memory unit of the console, and the selected exposure sensitivity is displayed on the display unit of the high-voltage unit. An exposure control is executed based on the exposure sensitivity corresponding to the flat panel detectors used for the X-ray imaging, which is selected from multiple exposure sensitivities stored in an exposure sensitivity memory unit. The exposure control unit of the high-voltage unit suspends the X-ray irradiation from the X-ray tube when an integrated value of the X-ray detected by the X-ray dose sensor reaches to the setting-value set relative to the selected exposure sensitivity.

A control unit is for a medical imaging system. The control unit includes a programmable logic gate, designed for at least one of closed-loop control and open-loop control of at least one component of the medical imaging system; a microprocessor, connected to the programmable logic gate via a first interface; and a signal line to connect the microprocessor to a contact array, arranged externally on the control unit. The microprocessor is designed to provide a second interface via the signal line and to control the programmable logic gate in accordance with a command signal received via the second interface. Further, the signal line is provided at least in part by the programmable logic gate and the programmable logic gate includes a receive unit for reading out the command signal.

The present invention relates to an apparatus (10) for generating X-rays. It is described to produce (210) with at least one power supply (40) a voltage between a cathode (20) and an anode (30). The cathode is positioned relative to the anode, and the cathode and anode are operable such that electrons emitted from the cathode interact with the anode with energies corresponding to the voltage, and wherein the electrons interact with the anode at a focal spot to generate X-rays. The at least one power supply provides (220) the cathode with a cathode current. An electron detector (50) is positioned (230) relative to the anode, and a backscatter electron signal is measured (240) from the anode. The measured backscatter electron signal is provided (250) to a processing unit (60). The processing unit determines (260) a cathode current correction and/or a correction to the voltage between the cathode and the anode, wherein the determination comprises utilization of the measured backscatter electron signal and a correlation between anode surface roughness and backscatter electron emission. The cathode current correction and/or the correction to the voltage between the cathode and the anode is provided (270) to the at least one power supply.

A method includes determining multiple X-ray tube current profiles of the X-ray tube, satisfying a loading limit of the X-ray tube; collecting first raw data of a patient according to the first X-ray tube current profile, with at least one X-ray tube current profile parameter of the first X-ray tube current profile being adapted according to a functional parameter; adapting the second X-ray tube current profile in the control unit such that, as a function of the at least one adapted X-ray tube current profile parameter, the second X-ray tube current profile satisfies the loading limit of the X-ray tube; collecting the second raw data of the patient according to the second X-ray tube current; reconstructing the medical image data set of the imaging measurement based upon the first raw data and the second raw data. Finally, the method includes provisioning the medical image data set.

An X-ray high voltage generator according to an embodiment includes an inverter circuit, a power device, a Pulse Width Modulation (PWM) circuit, and processing circuitry. The inverter circuit is configured to control output voltage to be output to an X-ray tube configured to generate an X-ray. The power device is provided for the inverter circuit and is configured to perform a switching process to control the output voltage. The PWM circuit is configured to control the switching process performed by the power device on the basis of an ON time period, in accordance with the output voltage. The processing circuitry is configured to output information about a product life of the power device on the basis of the ON time period.

An X-ray high voltage generator according to an embodiment includes an inverter circuit, a power device, a Pulse Width Modulation (PWM) circuit, and processing circuitry. The inverter circuit is configured to control output voltage to be output to an X-ray tube configured to generate an X-ray. The power device is provided for the inverter circuit and is configured to perform a switching process to control the output voltage. The PWM circuit is configured to control the switching process performed by the power device on the basis of an ON time period, in accordance with the output voltage. The processing circuitry is configured to output information about a product life of the power device on the basis of the ON time period.