Disclosed is a filter assembly for a radiographic apparatus, which is positioned at an illumination part of a radiographic apparatus. The disclosed filter assembly for a radiographic apparatus includes a radiation shield filter including silicon dioxide (SiO.sub.2), aluminum oxide (Al.sub.2O.sub.3), boron trioxide (B.sub.2O.sub.3) and sodium oxide (Na.sub.2O), and a radiation alignment filter composed of the same components as the radiation shield filter, laid over the front of the radiation shield filter and having fine holes formed in the surface thereof, and effectively blocks the radiation generated from the radiographic apparatus without greatly affecting the quality of a radiographic image.

A method and apparatus for optimizing a blocking grating for cone beam CT image scattering correction, wherein the method comprises: scanning a blocking grating to establish a swinging model thereof; setting initial coordinates of the blocking grating along a longitudinal direction of a detector in an initial projection, and establishing an objective function between CBCT image data missing voxel values and the coordinates of the blocking grating along the longitudinal direction of the detector according to the swinging model; minimizing the objective function with a mesh-adaptive direct search algorithm to generate optimized coordinates of the blocking grating along the longitudinal direction of the detector. The present disclosure proposes a brand new scattering correction method not requiring any source compensation, performs a mathematical optimization modeling of the data missing caused by the blocking grating in the image domain, quantitatively evaluates the influence on the reconstructed image by a blocker, solves a geometric optimal structure of the blocker using a mesh-adaptive direct search algorithm, and lays a solid theory foundation for the scattering correction method based on the blocker measurement.

A radiography apparatus includes a radiation emitting device that irradiates a subject with radiation, a camera that captures an image of the subject to acquire a captured image of the subject, and a radiation detector that detects the radiation transmitted through the subject and generates a radiographic image of the subject. The driving state of at least one of the radiation emitting device or the radiation detector is controlled on the basis of whether the radiation detector is included in the captured image.

There is provided a radiographic three-dimensional phantom for inter alia mimicking specific anatomical parts in a computerized tomography scan. Methods are provided for a variety of purposes including detecting a difference between a measured optical deformation of a radiographic three-dimensional phantom pair and a theoretical deformation of the radiographic three-dimensional phantom pair. These three-dimensional phantom can be divided into a plurality of portions, and non-radiopaque markers can be added to the portions. The portions of the three-dimensional phantom can be re-assembled, and images of the three-dimensional phantom can be generated and compared.

An X-ray sensing apparatus includes a first photodiode array for imaging a first area, a second photodiode array for imaging a second area that overlaps a portion of the first area, and a light-blocking layer coupled to the first photodiode array that prevents at least a portion of visible light emitted by a scintillator layer of the X-ray sensing apparatus from reaching the second photodiode array. The light-blocking layer includes a first feature that is imagable by the second photodiode array and indicates a position along a first direction and a second feature that is imagable by the second photodiode array and indicates a position along a second direction that is different than the first direction.

An image processing apparatus for processing a radiation image output from a radiation detection unit including a plurality of pixels, comprises: an imaging protocol obtaining unit configured to obtain an imaging protocol for imaging a subject; and a dose obtaining unit configured to obtain dose information of radiation based on a feature amount of the radiation image and information obtained from the imaging protocol.

The present disclosure relates to the field of a cabinet x-ray incorporating a stationary x-ray source array, and an x-ray detector, for the production of organic and non-organic images. Stationary x-ray digital cabinet tomosynthesis systems and related methods are disclosed. According to one aspect, the subject matter described herein can include an x-ray tomosynthesis system having a plurality of stationary field emission x-ray sources configured to irradiate a location for positioning an object to be imaged with x-ray beams to generate projection images of the object. An x-ray detector can be configured to detect the projection images of the object. A projection image reconstruction function can be configured to reconstruct tomography images of the object based on the projection images of the object. In the preferred embodiment, the x-ray source or sources are statically affixed in a range from about 350 to and including about 10.

A radiation imaging system includes a setting information storage that stores setting information to be used for radiation imaging, a setting information backup unit configured to back up the setting information stored in the setting information storage, and an operation control unit configured to restore, in a case the setting information storage has failed, the setting information in the setting information storage based on the setting information backed up in the setting information backup unit.

The present invention relates to determining baseline shift of an electrical signal generated by a photon detector (102) of an X-ray examination device (101). For this purpose, the photon detector comprises a processing unit (103) that is configured to determine a first crossing frequency of a first pulse height threshold by the electrical signal generated by the photon detector. The first pulse height threshold is located at a first edge of a noise peak in the pulse height spectrum of the electrical signal.

A method, system and computer readable storage media for segmenting individual intra-oral measurements and registering said individual intraoral measurements to eliminate or reduce registration errors. An operator may use a dental camera to scan teeth and a trained deep neural network may automatically detect portions of the input images that can cause registration errors and reduce or eliminate the effect of these sources of registration errors.