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    PANORAMIC TOMOGRAPHIC IMAGES
    2.
    发明公开
    PANORAMIC TOMOGRAPHIC IMAGES 审中-公开

    公开(公告)号：EP4198903A1

    公开(公告)日：2023-06-21

    申请号：EP21215687.1

    申请日：2021-12-17

    申请人： DENTSPLY SIRONA Inc. ,  Sirona Dental Systems GmbH

    发明人： MAUR, Susanne ,  BRAUN, Tim

    IPC分类号： G06T11/00

    摘要： The present teachings relate to a method for reconstructing a two-dimensional panoramic tomographic image comprising: providing one or more initial panoramic tomographic images; detecting, via an anatomy data-driven logic, one or more pre-selected anatomical features to provide anatomy data; computing, using the anatomy data and one or more initial panoramic tomographic images, a plurality of adjusted reconstruction parameters; reconstructing, using the adjusted reconstruction parameters, the two-dimensional panoramic tomographic image. The present teachings also relate to a system for reconstructing a two-dimensional panoramic tomographic image, and a use of adjusted reconstruction parameters.

    METHOD AND APPARATUS FOR GENERATING A 2D PANORAMIC IMAGE
    3.
    发明公开
    METHOD AND APPARATUS FOR GENERATING A 2D PANORAMIC IMAGE 审中-公开

    公开(公告)号：EP3685752A1

    公开(公告)日：2020-07-29

    申请号：EP19153361.1

    申请日：2019-01-23

    申请人： DENTSPLY SIRONA Inc. ,  SIRONA Dental Systems GmbH

    发明人： MAUR, Susanne ,  EICHNER, Stefan

    IPC分类号： A61B6/14 ,  A61B6/00 ,  G06T11/00

    摘要： The present invention proposes a method for producing a 2D panoramic image of an oral cavity (6) 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 (2) and an electronic image sensor (3) about the oral cavity (6) 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.