An imaging system is provided that includes a gantry having a bore extending therethrough; a plurality of image detectors attached to the gantry and radially spaced around a circumference of the bore such that gaps exist between image detectors along the circumference of the bore; an x-ray source attached to the gantry, wherein the x-ray source transmits x-rays across the bore towards at least two of the image detectors; wherein at least two image detectors detect both emission radiation and x-ray radiation.

A method of operating a tomographic imaging system whereby a plurality of radiographic images of an object are captured at a first orientation of the system's source and detector. After the radiographic images are captured and stored, geometric calibration data for the system is measured, corresponding to the first orientation of the system. A three dimensional image of the object is reconstructed using the measured geometric calibration data corresponding to the first orientation.

A control device includes a control unit and a determination unit. The control unit controls an operation of radiation tubes such that radiation is emitted at irradiation positions whose number is smaller than the total number of irradiatable positions preset so as to correspond to irradiation angles. The determination unit determines whether or not the radiation needs to be additionally emitted at the irradiatable positions different from the irradiation positions in order to obtain the tomographic image with an image quality level required for diagnosis, on the basis of a determination image obtained by the emission of the radiation at the irradiation positions.

A positioning apparatus and a positioning method has a control element and function 40 includes a radiograph acquisition element 41 that acquires radiograph data detected by two radiography systems selected from a group consisting of a flat panel detector, a DRR (Digital Reconstructed Radiograph) generation element 42 that generates DRR in two different directions by virtually performing fluoroscopic projection relative to the 3-dimensional CT data obtained through the network 17, a positioning element 43 that positions a CT to the X-ray fluoroscopic radiograph obtained from two radiography systems, and a displacement distance calculation element 44 that calculates a displacement distance of the tabletop 31 based on the gap between radiographs for improved positioning. The positioning element 43 has a multidimensional optimization element 45 and a 1-dimensional optimization element 46 that optimize parameters relative to rotation and translation of the fluoroscopic projection to maximize an evaluation function that evaluates a matching degree between the DRR and the X-ray fluoroscopic radiograph.

An X-ray emission device for emitting an integrated X-ray beam toward an object is disclosed. The X-ray emission device includes multiple X-ray emission tubes for respectively generating multiple X-rays, and a lens module for guiding the multiple X-rays toward the object to form the integrated X-ray beam.

Intraoral tomosynthesis systems, methods, and computer readable media for dental imaging can include an x-ray source containing multiple focal spots spatially distributed on one or multiple anodes in an evacuated chamber, an x-ray detector for positioning inside a mouth of a patient, a device for determining imaging geometry of the intraoral tomosynthesis system; and control electronics configured to regulate the x-ray source, by sequentially activating each of the multiple focal spots, such that multiple two dimensional (2D) projection images of the mouth of the patient are acquired from multiple viewing angles. In some aspects, the device for determining the imaging geometry can comprise a plate connectedly attached to the x-ray detector, at least one light source connectedly attached to the x-ray source, and a camera configured to capture at least one light spot produced by a projection of at least one light beam onto the plate.

The present invention provides an X-ray transceiving component for a CT imaging apparatus, comprising one or more bulb devices and a plurality of detector devices. The one or more bulb devices are configured to emit quadrate-tapered or fan-shaped X-ray beams. The plurality of detector devices are configure to receive the quadrate-tapered or fan-shaped X-ray beams emitted by the one or more bulb devices, each of the quadrate-tapered or fan-shaped X-ray beams comprising X-rays passing through a scanning field of view. Note that the plurality of detector devices are configured to receive X-rays passing through different areas within the scanning field of view, the one or more bulb devices are micro-focus bulb devices, and the plurality of detector devices are flat panel detectors or photoelectric coupling detectors. The present invention can greatly improve a resolution of CT imaging, increase imaging efficiency, and realize low-dose diagnosis in the case of ensuring that the scanning field of view is sufficient.

The disclosure provides a Computed Tomography (CT) image acquisition device and a CT scan imaging system. The CT scan imaging system includes: an image acquisition device, which specifically includes a first image acquisition device (1A, 1B) and a second image acquisition device (2A, 2B) that are perpendicular to each other, wherein the first image acquisition device (1A, 1B) or the second image acquisition device (2A, 2B) includes: an X-ray tube (1A, 2A), which is used for emitting X-rays, and a detector (1B, 2B), which is arranged opposite to the X-ray tube in the vertical direction and is used for receiving the X-rays and obtaining projection data according to the X-rays; and an image processing device (4), which is used for acquiring a three-dimensional image through reconstruction of the projection data, wherein the three-dimensional image includes one or more tomographic images.

A CT scanner has multiple X-ray sources on a first rotatable gantry disposed to illuminate an X-ray detector array. An image processor receives data from the detector array, machine readable instructions in the memory include instructions for energizing K>=2 X-ray sources simultaneously while rotating the gantry through multiple positions and recording measurements at each gantry position. Some measurements correspond to sums of line integrals of radiation from two or more of the X-ray sources as attenuated by passage through an imaging zone to detector array cells, including a first measurement N.sub.mp1 at a first gantry position and a second measurement N.sub.mp2 at a second gantry position represent a sum of line integrals comprising a line integral of attenuation of radiation along a same line L. Instructions determine individual line integrals along the line L from the measurements N.sub.mp1 and N.sub.mp2 that include sums of line integrals along the line L.

An X-ray imaging system for generating X-ray projections of an object, the X-ray imaging system including an X-ray device having a single X-ray source (110) for forming a plurality of X-ray beams (104), a filter (120) positioned within the plurality of X-ray beams, an object space where the object to be imaged is accommodated, and an X-ray detector (150) including an array of a plurality of pixels (151 . . . 155). The X-ray device, the filter, and the plurality of pixels are configured such that at least one pixel is exposed to the plurality of X-ray beams. X-ray radiation received by a particular pixel undergoes a same spectral filtration by the filter. Pixels receiving the X-ray radiation undergoing the same spectral filtration are summarized to a pixel subset.