14results about "Radiation diagnostics for dentistry" patented technology

The present invention provides a method for creating a 2D panoramic image of an intraoral cavity (6), comprising the steps of: A) providing a plurality of projection images acquired while a recording unit comprising a radiation source (2) and an electronic image sensor (3) rotates at least partially around the intraoral cavity (6) in a given position; B) calculating an image comprising at least one anatomical feature from the plurality of projection images using a calculation rule having reconstruction parameters; C) providing a model of at least one anatomical feature describing the at least one anatomical feature at a target position in the image; D) identifying the at least one anatomical feature in the calculated image; E) applying a metric to the calculated image. step F) determining a deviation between an actual position of the at least one identified anatomical feature in the computed image and a target position of the at least one anatomical feature in the model; step F) modifying at least one of the reconstruction parameters and recalculating at least one portion of the image showing the at least one anatomical feature using the computation rule and the at least partially modified reconstruction parameters or modifying a pixel transformation and applying the pixel transformation to at least one portion of the computed image showing the at least one anatomical feature so that at least this portion of the image is recalculated; step G) deriving a 2D panoramic image from the recalculated image; and step H) outputting the 2D panoramic image.

The present invention provides an intraoral x-ray system, the intraoral x-ray system comprising: an x-ray source located within the environment; a robotic arm including an actuatable scissor arm having a first end configured to be attached to a mounting and a second end attached to an x-ray source, at least one of the first end and the second end including a rotatable actuatable joint; a position sensor for determining variations in position and / or orientation of the environment relative to the X-ray source and variations in position and / or orientation of the mobile X-ray sensor relative to the X-ray source; and a drive unit for actuating the robot arm as a function of the determined variation in position and / or orientation to control the position and / or orientation of the X-ray source relative to a predetermined position and / or orientation of the X-ray source.

To detect a defect in an imaging plate by a method other than visual inspection.SOLUTION: An image generation device includes: an acquisition part for acquiring a plurality of X-ray images on the basis of X-ray information from each imaging plate irradiated with an X-ray after an X-ray is radiated to an imaging plate unit configured so that at least two imaging plates used in an intraoral method are stacked with each other; a detection part for detecting a defect on an image on the basis of the plurality of X-ray images; and an output part for outputting a result of the detection by the detection part.SELECTED DRAWING: Figure 2

The present invention relates to a computer-implemented X-ray imaging method for generating a panoramic image (1) with reduced overlap (8) of adjacent teeth, the method comprising the steps of acquiring a plurality of 2D X-ray images (2) in a plurality of different X-ray imaging directions (3) by rotating an X-ray source (4) and an X-ray detector (5) around a patient's jaw (6), respectively, and further comprising the steps of identifying, from among the corresponding X-ray imaging directions (3), one or more regions (7) each including at least one pair of overlapping adjacent teeth (8) in the 2D X-ray images (2) and / or in a temporary panoramic image reconstructed from the 2D X-ray images (2), from which an optimal X-ray imaging direction (3') for reducing the overlap in the reconstructed panoramic image (1) can be determined, and determining, from among the corresponding X-ray imaging directions (3) of the 2D X-ray images identified in the step of identifying one or more regions (7) each including at least one pair of overlapping adjacent teeth (8), one or more optimal X-ray imaging directions (3') for reducing the overlap in the reconstructed panoramic image (1), respectively.

The present invention provides a method of matching data, which is performed by an apparatus for matching data, the method including synchronizing acquisition time points of cone beam computed tomography (CBCT) data and 3D scan data, conforming coordinate systems of the CBCT data and the 3D scan data, constructing a 3D scan image in which a motion is corrected by matching depth maps created each time the 3D scan data are acquired, and constructing a CBCT 3D image in which the motion is corrected from the CBCT data by applying motion information acquired by matching the depth maps.

In some embodiments, a method for measuring a periodontal condition can include generating or obtaining radiograph data for a tooth and a respective bone structure, generating or obtaining surface data for the tooth, the surface data including surface information of a gum tissue associated with the tooth, and combining the radiograph data and the surface data such that a feature of the tooth in the radiograph data substantially matches with a corresponding feature of the tooth in the surface data. The method can further include calculating a periodontal parameter from the combination of the radiograph data and the surface data, with the periodontal parameter being indicative of the periodontal condition.

To provide a versatile, cost-optimized X-ray imaging system for a Cephalometric dentomaxillofacial X-ray imaging operation, which makes it possible to carry out one-shot (full-view) and scanning imaging operations.SOLUTION: An X-ray imaging system (100) comprises a controller (132), an X-ray emitter (104) for emitting X-rays (106), primary and secondary collimators (108, 110) for collimating the X-rays, an X-ray receiver (124) for receiving the X-rays from the emitter, and a positioner (120) for positioning an object (102) to be imaged. The controller is configured to select one of one-shot and scanning Cephalometric imaging operations and to control the emitter (106) to emit X-ray radiation and the receiver to receive the emitted radiation in order to acquire X-ray image data in the selected imaging operation.SELECTED DRAWING: Figure 1b

A device is disclosed for diagnosing a dental condition. The device captures image data representative of a tooth of a patient based on data obtained from a hardware device that scans the tooth. The device inputs the image data into a first supervised machine learning model, and receives, as output from the first supervised machine learning model, a plurality of biomarkers, each biomarker corresponding to a different location of the tooth. The device inputs the plurality of biomarkers into a second supervised machine learning model, and receives, as output from the second supervised machine learning model, a diagnosis of a dental condition.

A method for distinguishing between different types of oral cavity areas of interest (AOIs) is provided. [Solution] A method for distinguishing between multiple oral areas of interest (AOIs) of different types, comprising: receiving a first virtual three-dimensional (3D) model; receiving a second virtual 3D model; determining a first difference between the first virtual 3D model and the second virtual 3D model as a result of comparing the first virtual 3D model with the second virtual 3D model; determining a first oral AOI; determining whether the first difference includes a change indicative of the first type of oral AOI or a change indicative of the second type of oral AOI; determining that the first oral AOI is the first type of oral AOI; and generating a first indicator of the first type of oral AOI for a first tooth.

The present invention provides a method for creating a 2D panoramic image of an intraoral cavity (6), comprising the steps of: A) providing a plurality of projection images acquired while a recording unit comprising a radiation source (2) and an electronic image sensor (3) rotates at least partially around the intraoral cavity (6) in a given position; B) calculating an image comprising at least one anatomical feature from the plurality of projection images using a calculation rule having reconstruction parameters; C) providing a model of at least one anatomical feature describing the at least one anatomical feature at a target position in the image; D) identifying the at least one anatomical feature in the calculated image; E) applying a metric to the calculated image. step F) determining a deviation between an actual position of the at least one identified anatomical feature in the computed image and a target position of the at least one anatomical feature in the model; step F) modifying at least one of the reconstruction parameters and recalculating at least one portion of the image showing the at least one anatomical feature using the computation rule and the at least partially modified reconstruction parameters or modifying a pixel transformation and applying the pixel transformation to at least one portion of the computed image showing the at least one anatomical feature so that at least this portion of the image is recalculated; step G) deriving a 2D panoramic image from the recalculated image; and step H) outputting the 2D panoramic image.

The present invention relates to a controller (106) for dental imaging of an object. The controller includes at least one processor (802) and at least one memory (808) containing computer program code (814). The at least one memory (808) and the computer program code (814) are configured to cause the controller (106), using the at least one processor (802), to at least acquire first image data from an optical scanner unit (104), acquire second image data from a dental X-ray imaging unit (102), create a first surface model (202) from the acquired first image data, where the first surface model (202) represents an optical three-dimensional shape of a surface of a first portion of the object, and use the first surface model (202) to process the acquired second image data. The present invention also relates to an imaging system (100), a method, a computer program (814), and a computer-readable medium for dental imaging of an object.

Techniques are provided for x-ray sensing for intraoral tomography. A methodology implementing the techniques according to an embodiment includes detecting an x-ray pulse based on energy received at one or more pixels of a pixel array. The method also includes integrating the energy received at each of the pixels of the array of pixels, in response to the detection, wherein the energy received at each of the pixels is associated with the x-ray pulse. The method further includes multiplexing readouts of analog signals from the array of pixels into two or more parallel channels. The method further includes simultaneously converting (or otherwise in parallel) the analog signals of each of the channels into digital signals and storing the digital signals in memory as frames of data. The method may further include, for example, transmitting the frames of data from the memory, over a Universal Serial Bus, to an imaging system.

A system and method utilizing a one-way mirror display for patient self-positioning for dental x-ray image acquisition. The system includes a camera configured to capture images of the patient, a display, a one-way mirror positioned between the patient's location and the display, and an electronic processor. The electronic processor is configured to select an operating mode of the display based on user input and display at least one image on the display based on the selected operating mode. The method includes receiving image data from the camera, identifying at least one facial feature of the patient in the image data, determining whether the patient's face is aligned with at least one anatomical plane based on the at least one facial feature, and displaying at least one movement guide on the display based on the determined alignment of the patient's face.

The present invention particularly relates to a structure applicable for use in the context of dental or medical x-ray imaging, comprising an x-ray detector (15), an x-ray source (14), a light field indicator (141), and a support structure (12) to which the x-ray source (14) and light field indicator (141) structures are mounted, the support structure (12) being configured to allow the x-ray source (14) and light field indicator (141) structures to be positioned in essentially the same location, so that when located in said essentially the same location at a given time, they direct a given x-ray illumination field pattern and visible light field pattern in essentially the same direction towards the x-ray detector (15).