-
Patent Agency Ranking
1.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.
-
公开(公告)号：US20240350101A1
公开(公告)日：2024-10-24
申请号：US18687366
申请日：2022-07-19
Applicant: DENTSPLY SIRONA Inc. , ISRONA DENTAL SYSTEMS GMBH
Inventor： Wolf BLECHER , Michael ELVERS
Abstract: A method in which: (a) a patient is positioned in an X-ray device; (b) a 3D scout image with reduced dose and with a predefined volume sizes and a predefined center of rotation is created; (c) on the 3D scout image, a practitioner marks the tooth (d) a software determines, based on the position of the enveloping geometry, the available centers of rotation and calculates, based on reference points of the enveloping geometry, the imaging positions; (e) based on the imaging positions, a center of rotation is selected; (f) the previously determined aperture positions and the detector regions to be irradiated are transmitted; (g) the high-resolution image is reconstructed and the newly acquired high-resolution information is superimposed in the 3D scout image; (h) the practitioner receives the 3D scout image for diagnosis and further use.
-
公开(公告)号：US20220207794A1
公开(公告)日：2022-06-30
申请号：US17604045
申请日：2020-04-17
Applicant: DENTSPLY SIRONA Inc. , SIRONA DENTAL SYSTEMS GMBH
Inventor： Christina SARTI , Kai STANNIGEL , Michael ELVERS
IPC: G06T11/00
Abstract: The present invention relates to a method of metal artefact reduction in x-ray dental volume tomography, the method comprising: a step (S1) of obtaining two-dimensional x-ray images (1) or a sinogram (2) of at least part (v) of a patient jaw (3a), acquired through relatively rotating an x-ray source (4) and a detector (5) around the patient jaw (3a); the method being characterized by further comprising: a step (S2) of detecting metal objects (6) in the two-dimensional x-ray images (1) or the sinogram (2) by using at least a trained artificial intelligence algorithm to generate 2D masks (7) which represent the metal objects (6) in the two-dimensional x-ray images (1) or 3D masks which represent the metal objects (6) in the sinogram (2), respectively; and a step (S4; S5) of reconstructing a three dimensional tomographic image (8) respectively based on two-dimensional x-ray images (1) or the sinogram (2) and the 2D masks (7) or the 3D masks as generated.
-
4.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
-
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).
-
-
-
-
Search Results
5
records
(took 0.011 seconds)
