Three dimensional x-ray imaging systems are described in this application. In particular, this application describes a 3D dental intra-oral imaging (3DIO) system that collects a series of 2D image projections. The x-ray imaging system comprises a housing, an x-ray source attached to a articulating or motion gantry configured to move the source within the housing to multiple positions, an x-ray detector array located on an opposite side of an object to be imaged from the x-ray source, where the detector array is synchronized with the x-ray source to capture 2D images of the object when the x-ray source is located in multiple imaging positions, and a processor configured to accept the 2D images and reconstruct a 3D image. The multiple imaging positions can be located on a plane substantially parallel to the x-ray detector array. Other embodiments are described.

A mask positioning assembly is provided. The mask positioning assembly includes a cradle frame, an adapter frame, and a positioning mask. The cradle frame is connected to both the adapter frame and the positioning mask. The adapter frame can be configured to be connected to any of positioning assembly support frames in different types of positioning systems. A positioning system is also provided.

Systems for immobilizing a patient are disclosed. The system includes at least one preform formed from a low melting temperature thermoplastic, so that the preform may be formed to the anatomy of the patient, at least one frame coupled to the at least one preform, and at least one support to support the anatomy of the patient. The system also includes at least one lock mechanism coupled to at least one of the frame and the support in order to couple the at least one frame to the at least one support, and at least one adjuster mechanism coupled to at least one of the at least one frame and the at least one support in order to selectively adjust a distance between the at least one frame and the at least one support while the at least one frame is coupled to the at least one support.

The invention relates to a patient immobilization apparatus (100) comprising a planar element (105) made of a non-woven fabric. The planar element (105) has an elongate middle section (110) and a plurality of arms (120; 130), which extend out laterally on both sides of the middle section (110). The patient immobilization apparatus (100) can be provided to the end user, preferably in a folded state. In the folded state, each of the arms (120; 130) is folded laterally on the elongate middle section (110). Parts of the elongate middle section (110), having the arms (120; 130) folded laterally thereon, are advantageously additionally foldable onto each other in the longitudinal direction. Each arm (120; 130) can be folded laterally in part on itself before it is folded laterally on the elongate middle section (110).

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.

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.

The present invention relates to a head immobilization system for immobilizing a patient's head in a supine position of the patient, the system comprising: a support rail structure adapted to be coupled to a patient rest and extending at least on both lateral sides of the patient's head, a mask frame adapted to be coupled to at least one deformable upper mask sheet, wherein the mask frame is releasably connected to the support rail structure via a first interface section and a second interface section, with at least two pins protruding from the first interface section in a first direction, and at least two pin-receptions provided at the second interface section, wherein each one of the pin-receptions receives one of the pins, and a catch-mechanism for each pin-reception and each corresponding pin, which allows the pin to be pushed further into the pin-reception in the first direction, but which interlocks in case of an attempted withdrawal of the pin from the pin-reception in a second, opposite direction.

A radiographic apparatus includes a gantry and a table supporting a patient and having a device that immobilizes the head of the patient lying on the table. Such device includes a dome configured to support the head of the patient; a basal plate; one or more junctions provided at a first end of the basal plate; two uprights provided at a second end of the basal plate opposed to the first end, two slits being defined in the two uprights, a slide being disposed within each slit; and a cursor sliding in the two slits and configured to be blocked in position by a bushing, wherein the basal plate, the one or more junctions, the two uprights, the cursor, and the bushing are all radio-transparent and non-metallic.

Disclosed is a mammography device capable of recognizing a target person, the mammography device including: a body unit; an arm frame connected to the body unit, and rotating in a clockwise or counterclockwise direction; an X-ray generator placed at a top of the arm frame, and emitting X-rays; a mammography plate provided at a position corresponding to the X-ray generator, and obtaining an X-ray image of a breast of a target person; a compression unit placed between the X-ray generator and the mammography plate, and moving vertically to compress a target part; a sensor unit placed inside the mammography plate, and detecting whether the target person is present; and a control unit controlling an operation of the arm frame on the basis of whether the target person is detected by the sensor unit. Accordingly, a safety accident that may occur in a mammography process using the mammography device is reduced.

A mammography apparatus according to the present invention includes a mounting part coupled to an elevating part so as to be moved upward or downward and having rail parts, a fastening part inserted into the rail parts and slidably coupled to the mounting part and a sensing part installed on the mounting part and configured to generate an electrical signal by being brought into contact with the fastening part so as to detect information about the fastening part, in which the sensing part includes a contact part installed at an end at an entry side of the fastening part slidably coupled to the mounting part and a recognizing part installed on an inner surface of the mounting part which faces the contact part.