A dental implant and final prosthetic placement system for small-diameter implants (and method for using the system) in which a final prosthetic is digitally designed and created, and is itself used as the drill guide to place the implants. The final prosthetic is held in the predetermined proper drilling position by a stent, such as an occlusal guard. The combination of final prosthetic (with holes through which the small-diameter implants are drilled to secure it) and the stent encasing the final prosthetic, is itself the drill guide.

A medical X-ray CT imaging apparatus includes an X-ray generator that generates a cone beam, an X-ray detector, a support that supports the X-ray generator and the X-ray detector while the X-ray generator and the X-ray detector are opposed to each other, a turning drive unit that turns the X-ray generator and the X-ray detector, which are supported by the support, an imaging information receiving unit, and an X-ray output condition setting unit. The imaging information receiving unit receives an imaging area setting relating to at least one of a size of an imaging area, an imaging purpose, and an imaging region. The X-ray output condition setting unit automatically sets an output condition of the X-ray generator according to at least one of the size of the imaging area, the imaging purpose, and the imaging region, which are received by the imaging information receiving unit.

A mobile orthodontic treatment system includes comprising a mobile trailer and a panoramic machine provided within the trailer. The panoramic machine is configured to obtain a 2-D image of a patient's mouth and includes a base secured to the floor of the housing and a stanchion secured to the trailer by a bracket. The mobile orthodontic treatment system further includes a digital scanner and a monitor provided within the housing. The digital scanner is configured to obtain a 3-D image of the patient's mouth and display the image on the monitor. The digital scanner and the monitor are mounted on a wall of the housing by a wall mount articulating bracket. The mobile orthodontic treatment system further includes a lift assembly provided on one of a side and an end of the housing to enable disabled people to enter and exit the housing.

An intraoral sensor includes an image sensor, an FOP, a scintillator, a case, and a signal cable. The FOP includes a first main surface, a second main surface, and a plurality of lateral surfaces. The first main surface and the second main surface have a polygonal shape. An edge of the second main surface is constituted by a plurality of corner portions, and a plurality of side portions. The scintillator is provided on the second main surface and the plurality of lateral surfaces in such a manner that a second corner portion out of the plurality of corner portions and a second ridge portion are exposed. The second corner portion located on a second direction side opposite to a first direction in which the signal cable extending beyond, and the second ridge portion constituted by the lateral surfaces adjacent to the second corner portion adjacent to each other.

Disclosed are a backscattered ray shielding mechanism and a portable X-ray generating device comprising the same. The backscattered ray shielding mechanism according to the present invention is mounted on a portable X-ray generating hand-held device to emit X-rays and blocking backscattered X-rays during X-ray emission and includes a lead-free lightweight shielding member, which is detachably or foldably mounted as a convertible form on an X-ray emitting unit of the portable X-ray generating device and partially supported by the X-ray emitting unit.

A method, apparatus, system, and computer program product for using an invalidity matrix, iterative reconstruction and reprojection to generate a two-dimensional image. The method includes acquiring projections through an a dental anatomy, calibrating the acquired projected images, estimating a geometry of the tomosynthesis system, determining an invalidity matrix for each acquired projection image, removing contributions of marker particles to the acquired projection images, constructing a starting volume for reconstruction, performing an iteration process for iteratively updating the starting volume, and reprojecting a final reconstructed volume to obtain a final two-dimensional image.

Provided is a method of analyzing a dental image for a correction diagnosis and an apparatus using the same. The method includes the steps of obtaining a dental image of an examinee and detecting at least some of a plurality of landmarks for a correction diagnosis in the dental image using a landmark detection module, wherein the landmark is an anatomical reference point indicative of a relative position of at least one of a facial skeleton, a tooth and a face contour necessary for t correction diagnosis, and the landmark detection module may include a machine learning module based on an artificial neural network.

A dental radiographic positioner and film holder assembly has a film plane reference component (2) configured to detachably affix to a shaft (1a) extending from the edge of the film holder (1). Affixing surfaces (1b, 2b) are provided between the shaft (1a) and film plane (2) to enable longitudinal movement and restrict rotational movement. A teeth plane reference component (3) is detachably affixed to the shaft (1a). A bisecting angle reference component (4) is detachably affixed to the shaft (1a). Both the bisecting angle plane (4) and teeth plane (3) are attached to allow for longitudinal motion along the shaft (1a) as well as rotational motion around the axis of the shaft (1a).

The present invention relates to scatter correction method and apparatus for dental cone-beam CT. An object of the present invention is improving quality of reconstructed images by processing the scatter correction by learning which uses Monte Carlo simulation and artificial neural network. In order to achieve this object, the scatter correction method is characterized in that the method comprises steps of: rotating X-ray source of cone-beam CT in a predetermined angle while obtaining CT images for respective angles with flat-panel detector so as to reconstruct 3-dimensional CT image; generating a 2D profile of projection image by Monte Carlo simulation for respective angles by use of the reconstructed 3-dimensional CT image; decomposing the 2D profile of projection image so as to separate primary x-ray image and scatter image, wherein the primary x-ray image is unscattered in reaching the detector and wherein the scatter image is generated only by the scatter; building and doing learning of artificial neural network, wherein the objective function of the artificial neural network is primary image and scatter image which have been generated in simulation and wherein the input of the artificial neural network is the projection image which have been obtained in reality; and storing the learning information for the artificial neural network and then applying the learning information to scatter correction.

Radiographic imaging system including: an x-ray transmission unit; an x-ray receiver unit; a plate made from a material opaque to x-rays and situated between the transmission unit and the receiver unit, the plate including at least four channels, each channel enabling a part of the x-rays emitted by the transmission unit to pass through the channel; and an image processing unit configured to determine the coordinates of the projected patterns and to calculate a position of the receiver unit from the coordinates of the projected patterns and from the coordinates of the channels.