At least one power supply produces a voltage between a cathode and an anode. The cathode and anode are operable such that electrons emitted from the cathode interact with the anode with energies corresponding to the voltage. The electrons interact with the anode at a focal spot to generate X-rays. The power supply provides the cathode with a cathode current. An electron detector is positioned relative to the anode, and a backscatter electron signal is measured from the anode. The measured backscatter electron signal is provided to a processing unit, which determines a cathode current correction and/or a correction to the voltage between the cathode and the anode using the measured backscatter electron signal and a correlation between anode surface roughness and backscatter electron emission.

Various aspects include methods for compensating for the effects of charge sharing among pixelate detectors in X-ray detectors by applying a correspondence factor to counts of X-ray photons in energy bins to estimate incident X-ray photon energy bins. The correspondence factor may be determined by determining an incident X-ray photon energy spectrum, adjusting the incident X-ray photon energy spectrum to account for an energy resolution of the pixelated detector, generating a charge sharing model for the adjusted incident X-ray photon energy spectrum based on a percentage charge sharing parameter of the pixelated detector, applying the charge sharing model to energy bins of the pixelated detector to estimate counts in each of the energy bins, and determining the correspondence factor by comparing the estimated counts in each of the energy bins to counts in the energy bins that would be expected for the adjusting the incident X-ray photon energy spectrum.

An X-ray imaging apparatus and control method for the same relate to a mobile X-ray imaging apparatus that allows a user to recognize whether the X-ray imaging apparatus is in an appropriate imaging distance from an object. The X-ray imaging apparatus includes an X-ray source, an input unit that receives distance information between the X-ray source and an X-ray detector, a reference light emitter that irradiates a light from the X-ray source in a direction where the X-ray detector is placed, at least one auxiliary light emitter that irradiates a light that overlaps with a light from the reference light emitter; and a controller that determines an auxiliary light emitter corresponding to the distance information among the at least one auxiliary light emitter, and controls the reference light emitter and the determined auxiliary light emitter so that the reference light emitter and the determined auxiliary light emitter irradiate a light.

The present invention provides an X-ray detection device and an apparatus and method for calibrating an X-ray detector, the method for calibrating an X-ray detector comprising: retrieving a calibration parameter stored in the X-ray detector relative to the X-ray detector; and calibrating the X-ray detector according to the calibration parameter.

The invention concerns a monitoring device for monitoring a medical imaging apparatus, a medical imaging apparatus comprising a monitoring device and a method for evaluating a functionality of a medical imaging apparatus. The monitoring device comprises a sensor for measuring at least one parameter of the medical imaging apparatus. Further, it comprises a data processing unit for receiving data from the sensor and for analyzing the received data thereby evaluating based on the analyzed data, during at least one life cycle phase of the medical imaging apparatus, whether a functionality of the medical imaging apparatus is maintained. The sensor is configured for measuring the parameter of the medical imaging apparatus during different life cycle phases of the medical imaging apparatus. The data processing unit is configured for determining the present life cycle phase of the medical imaging apparatus and is configured for controlling the at least one sensor based on the determined present life cycle phase of the medical imaging apparatus.

A system and method of checking registration for a surgical system, the surgical system including fiducials and tracking markers, may include: using the fiducials and the tracking markers to register a three-dimensional (3D) imaging space of the surgical system with a 3D tracking space of the surgical system; using a tracking fixture of an X-ray imaging system to register an X-ray imaging space of the X-ray imaging system to the 3D tracking space; obtaining a two-dimensional (2D) X-ray image corresponding to the 3D tracking space; identifying a point of interest in the 2D X-ray image; determining a vector in the 3D tracking space that passes through the point of interest; and/or evaluating the registration of the 3D imaging space with the 3D tracking space based on a location, an orientation, or the location and the orientation of the vector in the 3D tracking space.

An X-ray imaging apparatus includes an X-ray irradiation region adjustment unit for adjusting an X-ray irradiation region and a control unit for controlling the X-ray irradiation region adjustment unit so as to adjust the X-ray irradiation region based on a set region of interest in the case of a region of interest highlighting mode that highlights a predetermined target object within the region of interest set in the image generated by by the image processing unit.

A device for determining an ionizing radiation dose deposited by a medical imaging apparatus during a radiological examination of a patient includes at least one measurement probe comprising at least one optical probe defining two exit ends, the optical probe comprising at least one active section made from a scintillator and intended to emit photons under the effect of incident ionizing radiation and at least two transport sections that are placed on either side of the active section and configured to transport the photons emitted by the active section to the exit ends; at least one detection system comprising at least two photodetectors, each photodetector being connected to one respective exit end of the optical probe to receive and count the photons received from the exit end; and at least one processing module configured to determine the deposited dose on the basis of the measurements carried out by the photodetectors.

A method for determining geometrical information about a medical treatment arrangement that includes a rotatable treatment radiation source unit is provided. The method includes attaching a phantom to a patient support of the medical treatment arrangement, attaching a calibration module to the rotatable treatment radiation source unit to permit the calibration module to rotate together with the rotatable treatment radiation source unit when the rotatable treatment radiation source unit is rotated, obtaining for each of a plurality of rotational positions of the rotatable treatment radiation source unit a projection image of the phantom and of the calibration module by an image detector, while a part of the calibration module is positioned in a radiation propagation zone between the rotatable treatment radiation source unit and the image detector, evaluating the images, obtaining an evaluation result, and determining geometrical information about the medical treatment arrangement from the evaluation result.

A radiography control device used in a radiography system including a radiography device and a radiography control device that controls the radiography device, the radiography control device includes: an inputter that inputs examination order information; and a hardware processor that selects guidance for guiding a dynamic state of a subject based on the order information input from the inputter.