The invention relates, in particular, to features of an apparatus applicable for use in the context of dental or medical CT imaging. The apparatus comprises a two longitudinally extending frame parts 11, 21, a support construction 12 for an X-ray source 14 and an image detector 15 and a first driving mechanism 16 arranged to move them about a rotation axis 13. A patient support 18 comprising a patient support surface 184 is mechanically connected to the first of the substantially longitudinally extending frame parts 11, which extends substantially in parallel with the first longitudinally extending frame part 11 and having at, or at the proximity of its two edges 181 which extend in the same direction as the first longitudinally extending frame part 11 i) at least one support element 183 or ii) at least one connecting construction 182 for at least one support element 83, the support element 183 being an accessory designed for a patient to hold on or help the patient to be still during an imaging exposure, or to help keeping a patient be still.

The present disclosure relates to a C-arm. The C-arm may include a connection component, a driving component, a first support component, and a second support component. The first support component may be configured to support a radiation generator. The second support component may be configured to support a radiation detector. The first support component and the second support may be movably connected to the connection component. The driving component may be configured to drive a movement of the first support component relative to the connection component.

The disclosure relates to methods, systems, and computer program products for registering a set of X-ray images with a navigation system. In the method, by a camera, at least one image of a reference object is recorded and, on the basis thereof, a current posture of the reference object is determined. It is then checked whether this posture fulfils a specified criterion, which also on an arrangement of the reference object at least partially outside a planned reconstruction volume of the X-ray device, predicts an expected successful registration. On non-fulfillment of the criterion, a signal for adaptation of a relative alignment between the X-ray device and the reference object is automatically output. On fulfillment of the criterion, the X-ray images of the reference object are recorded, the posture of the reference object is determined, and the registration is carried out using the determined postures as reference.

A system and method are provided for positioning of an emitter and a receiver of an imaging device relative to an area of interest of a patient supported on a surgical frame to facilitate capturing of a desired image of the area of interest. During use of the system and method, the area of interest can be identified using images of the patient generated prior to surgery, at least one optical navigation marker can be placed on skin of the patient adjacent the area of interest, a physical distance between two reference points on the surgical frame can be measured, and images of the patient positioned on the surgical frame can be captured using an optical camera system. A location of the optical navigation marker adjacent the area of interest in an X, Y, and Z coordinate system can be determined using the captured images of the patient and at least one ratio to the measured physical distance, the emitter and the receiver can be moved into position relative to the optical navigation marker adjacent the area of interest using the determined location thereof in the X, Y, and Z coordinate system, and use of an electromagnetic imaging technique can be initiated using the emitter and the receiver to produce the desired image of the area of interest. The system and method can be used in limiting the need for a multitude of uses of the fluoroscopy apparatus by positioning the emitter and the receiver in an ideal position relative to the area of interest.

An estimation device includes at least one processor, in which the processor functions as a learned neural network that derives a result of estimation of at least one emphasis image in which a specific composition of a subject including a plurality of compositions is emphasized from a simple two-dimensional image acquired by simply imaging the subject. The learned neural network is learned by using, as teacher data, a composite two-dimensional image representing the subject, which is derived by combining a three-dimensional CT image of the subject, and an emphasis image for learning in which the specific composition of the subject is emphasized, which is derived from the CT image.

An estimation device includes at least one processor, in which the processor functions as a learned neural network that derives a result of estimation of at least one emphasis image in which a specific composition of a subject including a plurality of compositions is emphasized from a simple two-dimensional image acquired by simply imaging the subject. The learned neural network is learned by using, as teacher data, two radiation images acquired by imaging the subject with radiation having different energy distributions and an emphasis image for learning in which the specific composition of the subject is emphasized, which is derived from the two radiation images.

A mobile radiography apparatus includes radiopaque markers disposed in a radiation path that extends from an x-ray source to a digital radiographic detector, which detector is mechanically uncoupled from the x-ray source or x-ray sources. A processing system calculates a position of the detector relative to the x-ray source or x-ray sources according to identified marker positions in acquired x-ray projection images, and reconstructs a volume image according to the acquired x-ray projection images.

According to one embodiment, an X-ray diagnostic apparatus includes a display and processing circuitry. The display displays information representing a position of an object corresponding to an irradiation position of an X-ray tube. The processing circuitry receives an operation for adjusting the irradiation position of the X-ray tube based on the information displayed on the display, and controls the X-ray tube based on the irradiation position adjusted by the operation.

A radiation image processing device includes: a first estimation section that estimates components of radiation Ra having passed through a subject Obj using a first radiation image taken from the subject Obj; a second estimation section that estimates components of the radiation Ra, which have passed through an additional scattering element EL, using an estimation result of the first estimation section and scattering characteristics f2(X) of the additional scattering element EL; and a first image generation section that generates a second radiation image, which has been transmitted through the subject Obj and the additional scattering element EL, using an estimation result of the second estimation section.

An X-ray imaging system includes an X-ray irradiation unit, an X-ray detection unit, an imaging unit that acquires a subject image obtained by imaging an appearance of the subject, a position information acquisition unit that acquires a position information of the subject captured in the subject image, a target position acquisition unit that acquires a target position according to imaging conditions, and a projection unit that projects a marker indicating a contour of the subject for guiding a position of the subject to be the target position acquired by the target position acquisition unit, onto an imaging position that is the subject or a surface to which the subject is fixed.