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1.发明公开公开(公告)号：US20240338865A1
公开(公告)日：2024-10-10
申请号：US18681263
申请日：2022-07-26
Applicant: DENTSPLY SIRONA INC. , SIRONA DENTAL SYSTEMS GMBH
Inventor： Stefan EICHNER , Michael ELVERS
CPC classification number: G06T11/005 , A61B6/51 , G06T15/00
Abstract: The disclosure relates to a method including: (S1) Determining the jaw arch form as a model-based prior knowledge about the anatomy of a patient based on one or more previous panoramic images or 3D images or one or more optical 3D scans of the patient; (S2) Determining a patient-specific x-ray device imaging trajectory for the panoramic image of the patient; (S3) Performing the imaging on the basis of the determined patient-specific x-ray device imaging trajectory to acquire imaging data; (S4) Adjusting reconstruction parameters according to the determined patient-specific x-ray device imaging trajectory; (S5) Determining the patient-specific focal curve for the panoramic image of the patient to be produced by using the model-based prior knowledge; (S6) Reconstructing the panoramic image using the acquired imaging data, the adjusted reconstruction parameters including the determined patient-specific focal curve, and a layer to be imaged which overlaps with the determined jaw arch
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公开(公告)号：US20220202382A1
公开(公告)日：2022-06-30
申请号：US17605644
申请日：2020-04-23
Applicant: DENTSPLY SIRONA Inc. , SIRONA DENTAL SYSTEMS GMBH
Inventor： Michael ELVERS , Ulrich SCHULZE-GANZLIN , Stefan EICHNER
Abstract: The invention relates to a device and a method for generating a panoramic layer image (1, 2) of an object (3) to be imaged, by employing a 2D panoramic X-ray device, wherein the object is imaged by projecting X-rays (6) generated by an X-ray source (7) through the object (3) in a projection direction (8) and recording said X-rays (6) with an X-ray detector (9), wherein several 2D X-ray projection images are continuously recorded from various imaging directions while the X-ray source (7) and the X-ray detector (9) move around the object (3), wherein at least one panoramic layer image (1, 2) is calculated from the recorded 2D X-ray projection images by means of a reconstruction method. The panoramic layer image (2) is calculated by selecting and employing at least one partial area (50, 52, 55, 57, 65) from at least two 2D X-ray projection images (51) in relation to an active sensor area (73).
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Patent Agency Ranking
3.发明申请公开(公告)号：US20220192616A1
公开(公告)日：2022-06-23
申请号：US17440358
申请日：2020-02-25
Applicant: DENTSPLY SIRONA inc. , SIRONA DENTAL SYSTEMS GMBH
Inventor： Stefan EICHNER , Markus HÜLSBUSCH
Abstract: The invention relates to a method for producing a panoramic tomographic image (1, 11, 60) of an object (2) to be recorded using a 2D panoramic X-ray device (3), in the course of which X-rays (4) produced by means of an X-ray source (5) irradiate the object (2) and are acquired by means of an X-ray detector (7), wherein, during a movement of the X-ray source (5) and the X-ray detector (7) around the object (2), a number of 2D X-ray projection images (30) are acquired from different acquisition directions (6). A first panoramic tomographic image (1) is calculated from the acquired 2D X-ray projection images (30) using a reconstruction method, wherein the acquired 2D X-ray projection images (30) are modified using a modification method, wherein, from the modified 2D X-ray projection images (40, 50) and using the reconstruction method, a second panoramic tomographic image (11) is calculated with a higher weighting of artifacts (20) relative to anatomical structures (17, 18, 19), wherein a third panoramic tomographic image (60) with significantly reduced artifacts is calculated.
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公开(公告)号：US20210407159A1
公开(公告)日：2021-12-30
申请号：US17290368
申请日：2019-11-07
Applicant: DENTSPLY SIRONA INC.
Inventor： Stefan EICHNER , Markus HÜLSBUSCH
Abstract: The present invention relates to a device for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine, comprising: an input interface for receiving the panoramic radiography image as well as reconstruction data of the panoramic radiography image, the reconstruction data including information on a course of projection lines of the panoramic radiography image between an X-ray source and an X-ray detector of the panoramic X-ray machine as well as information on an image surface of the panoramic radiography image; an evaluation unit for evaluating the reconstruction data and for determining an image section of the panoramic radiography image that has been generated on the basis of one of the projection lines with two intersection points with the image surface; an image editing unit for editing the panoramic radiography image based on the determined image section; and an output unit for outputting the edited panoramic radiography image. Moreover, the invention relates to a method for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine as well as a diagnosis system for examining a craniomaxillofacial area of a patient.
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5.发明申请公开(公告)号：US20250017546A1
公开(公告)日：2025-01-16
申请号：US18712547
申请日：2022-11-23
Applicant: DENTSPLY SIRONA Inc.
Inventor： Susanne MAUR , Stefan EICHNER
Abstract: An extraoral dental X-ray apparatus for imaging of a patient in the dental region including: a radiator array having at least two individual radiators each for emitting X-rays, and offset at least along a predetermined direction (z); and an X-ray detector for at least partially detecting the X-rays emitted by the individual radiators, the radiator array and the X-ray detector being rotatably arranged about an axis parallel to said predetermined direction, further including a control device for separately controlling the individual radiators, the control device being configured such that the emitted X-rays of the at least two individual radiators differ in intensity and/or spectral distribution of the X-rays to effect an intensity and/or spectral distribution which can be varied along the predetermined direction. The control device can adaptively adapt the intensity and/or spectral distribution to the anatomy of the patient.
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6.发明公开公开(公告)号：US20230309938A1
公开(公告)日：2023-10-05
申请号：US18026617
申请日：2021-09-14
Applicant: DENTSPLY SIRONA Inc.
Inventor： Kai STANNIGEL , Stefan EICHNER , Michael ELVERS
CPC classification number: A61B6/501 , G06T7/0012 , G06T2207/10116 , G06T2207/20084
Abstract: A method for generating a panoramic image with reduced overlapping of neighboring teeth, including: acquiring 2D x-ray images respectively at a different radiographic directions by a rotating an x-ray source and an x-ray detector around the jaw of a patient. It includes a step of identifying one or more regions each including at least one pair of overlapping neighboring teeth in the 2D x-ray images and/or in temporary panoramic images reconstructed from the 2D x-ray images for which an optimal radiographic directions are determined, among the corresponding radiographic directions, which reduces the overlap in the panoramic image to be reconstructed. It includes determining one or more optimal radiographic directions respectively among the corresponding radiographic directions of the 2D x-ray images for which one or more regions each including at least one pair of overlapping neighboring teeth has been identified, to reduce the overlaps in the panoramic image to be reconstructed.
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公开(公告)号：US20220022827A1
公开(公告)日：2022-01-27
申请号：US17424951
申请日：2020-01-23
Applicant: DENTSPLY SIRONA inc.
Inventor： Susanne MAUR , Stefan EICHNER
Abstract: The present invention proposes a method for producing a 2D panoramic image of an oral cavity comprising the steps: A) provision of a plurality of projection images acquired during an at least partial revolution of a recording unit comprising a radiation source and an electronic image sensor about the oral cavity in a given position; B) calculation of an image including at least one anatomical feature from the plurality of projection images using a calculation rule with reconstruction parameters; C) provision of a model of the at least one anatomical feature, which describes the at least one anatomical feature in a target position in an image; D) identification of the at least one anatomical feature in the calculated image; E) determination of a deviation between an actual position of the at least one identified anatomical feature in the calculated image and the target position of the at least one anatomical feature in the model by applying a metric; F) variation of at least one of the reconstruction parameters and recalculation of at least one part of the image that shows the at least one anatomical feature using the calculation rule and the at least partially varied reconstruction parameters or variation of a pixel transformation and application of the pixel transformation to at least one part of the calculated image that shows the at least one anatomical feature, so that at least this part of the image is recalculated; G) derivation of the 2D panoramic image from the recalculated image; and H) outputting the 2D panoramic image.
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