Provided is an X-ray imaging system capable of performing X-ray imaging quickly. The X-ray imaging system is provided with: an X-ray tube device including a cathode and an anode, the X-ray tube device being capable of performing X-ray imaging by irradiating an imaging target with X-rays in a state of rotating the anode; a light irradiation device including a collimator defining an X-ray irradiation range of the X-rays with respect to the imaging target, a visible light irradiation unit for emitting visible light to the imaging target and a light irradiation operation unit for performing an operation for making the visible light irradiation unit in the light irradiation state; and a controller for controlling operations of the X-ray tube device and the light irradiation device. The controller rotates the anode at an imaging possible rotation speed capable of performing X-ray imaging when the light irradiation operation unit is operated.

The X-ray imaging apparatus includes: a main power supply operation unit for switching ON/OFF of power supply to the X-ray imaging apparatus; a braking unit for decelerating a rotation speed of the anode to a predetermined braking speed lower than a resonance range which is a rotation speed of the anode at which resonance occurs in the X-ray tube; and a non-braking stop prediction unit configured to detect a predetermined situation in which a non-braking stop state is predicted, the non-braking stop state being a state in which the main power supply operation unit is operated to be turned to an OFF state without decelerating the rotating anode by the braking unit. The non-braking stop prediction unit activates the braking unit by detecting the predetermined situation to decrease the rotation speed of the anode to the braking speed.

The X-ray imaging apparatus includes: a main power supply operation unit for switching ON/OFF of power supply to the X-ray imaging apparatus; a braking unit for decelerating a rotation speed of the anode to a predetermined braking speed lower than a resonance range which is a rotation speed of the anode at which resonance occurs in the X-ray tube; and a non-braking stop prediction unit configured to detect a predetermined situation in which a non-braking stop state is predicted, the non-braking stop state being a state in which the main power supply operation unit is operated to be turned to an OFF state without decelerating the rotating anode by the braking unit. The non-braking stop prediction unit activates the braking unit by detecting the predetermined situation to decrease the rotation speed of the anode to the braking speed.

Various methods and systems are provided for an x-ray imaging system. In one example, a method for decelerating a rotor of an x-ray tube of an imaging system includes controlling and/or monitoring a speed and position of the rotor, passing the rotor through a first position where a force exerted on the rotor, is less than Earth's gravitational pull, the force due to a combination of gravity and radial acceleration, and initiating a predefined deceleration profile to decelerate the rotor to a halt when the x-ray tube passes through the first position.

An X-ray diagnostic apparatus comprises an X-ray tube and processing circuitry. The X-ray tube includes a rotary anode. The processing circuitry is configured to derive an acquiring condition from a fluoroscopic image, and start to increase, in accordance with the acquiring condition derived, a rotating speed of the anode from a low rotating speed to a high rotating speed before the X-ray tube finishes emitting an X-ray to acquire the fluoroscopic image.

A positioning apparatus is provided for an electron beam of an electron tube, the apparatus including a first DC voltage circuit having a high potential difference and a second DC voltage circuit having a smaller potential difference, having in each case a first potential level and a second potential level, and a deflection module, which has two inputs and at least one deflection coil, wherein the at least one deflection coil is connected between the two inputs of the deflection module.

A positioning apparatus is provided for an electron beam of an electron tube, the apparatus including a first DC voltage circuit having a high potential difference and a second DC voltage circuit having a smaller potential difference, having in each case a first potential level and a second potential level, and a deflection module, which has two inputs and at least one deflection coil, wherein the at least one deflection coil is connected between the two inputs of the deflection module.

Provided is an X-ray imaging system capable of performing X-ray imaging quickly. The X-ray imaging system is provided with: an X-ray tube device including a cathode and an anode, the X-ray tube device being capable of performing X-ray imaging by irradiating an imaging target with X-rays in a state of rotating the anode; a light irradiation device including a collimator defining an X-ray irradiation range of the X-rays with respect to the imaging target, a visible light irradiation unit for emitting visible light to the imaging target and a light irradiation operation unit for performing an operation for making the visible light irradiation unit in the light irradiation state; and a controller for controlling operations of the X-ray tube device and the light irradiation device. The controller rotates the anode at an imaging possible rotation speed capable of performing X-ray imaging when the light irradiation operation unit is operated.

A method is for spatially influencing a focal spot of an X-ray source that generates X-ray radiation, to an associated X-ray source, to an associated system and to an associated computer program product. The method according to at least one embodiment includes: producing a focal spot on an anode by way of an electron emitter including a plurality of emitter segments, individually controllable to emit electrons; determining at least one actual value of a spatial extent and/or of a position of the produced focal spot; comparing the at least one actual value with a specified reference value of the focal spot; and controlling the emitter segments based upon the comparison of the at least one actual value and the reference value such that the at least one actual value converges toward the reference value, thereby spatially influencing the focal spot of the X-ray source that generates X-ray radiation.

Various methods and systems are provided for an x-ray imaging system. In one example, a method for decelerating a rotor of an x-ray tube of an imaging system includes controlling and/or monitoring a speed and position of the rotor, passing the rotor through a first position where a force exerted on the rotor, is less than Earth's gravitational pull, the force due to a combination of gravity and radial acceleration, and initiating a predefined deceleration profile to decelerate the rotor to a halt when the x-ray tube passes through the first position.