7results 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 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 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.