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    X-ray onset detector for intraoral dental sensor
    5.
    发明授权
    X-ray onset detector for intraoral dental sensor 有权

    公开(公告)号：US12015870B2

    公开(公告)日：2024-06-18

    申请号：US17817146

    申请日：2022-08-03

    Applicant: BAE Systems Imaging Solutions Inc.

    Inventor： Glen L. Collier ,  Stephen W. Mims ,  George Y. Wang ,  Kun Zhao ,  Stanley K. Searing

    IPC: H04N5/32 ,  A61B6/51 ,  H04N25/50 ,  H04N25/702 ,  H04N25/75

    CPC classification number: H04N5/32 ,  A61B6/512 ,  H04N25/50 ,  H04N25/702 ,  H04N25/75

    Abstract: Techniques are provided for x-ray onset detection for an intraoral dental sensor. A methodology implementing the techniques according to an embodiment includes calculating a plurality of superpixel values for each of a plurality of rows of detector pixels of a sensor. Each of the superpixel values is based on a sum of pixel values of a set of pixels associated with the superpixel value, the set of pixels selected from the detection row of a current frame of the sensor. The method also includes calculating a difference between each of the superpixel values and a corresponding stored superpixel value generated from a previous sensor frame and determining if the differences exceed a superpixel threshold value. The method further includes incrementing a hit counter in response to the determination and generating a detection signal if the hit counter exceeds a hit count threshold, otherwise proceeding to process the next detection row.

    Three dimensional X-ray imaging system
    6.
    发明授权
    Three dimensional X-ray imaging system 有权

    公开(公告)号：US11998379B2

    公开(公告)日：2024-06-04

    申请号：US17821610

    申请日：2022-08-23

    Applicant: 3DIO, Inc.

    Inventor： D. Clark Turner ,  Douglas P. Hansen ,  Thomas L. Youd

    IPC: A61B6/00 ,  A61B6/02 ,  A61B6/51 ,  A61B6/04 ,  A61B6/58

    CPC classification number: A61B6/512 ,  A61B6/025 ,  A61B6/4452 ,  A61B6/486 ,  A61B6/0478 ,  A61B6/582

    Abstract: Three dimensional x-ray imaging systems are described in this application. In particular, this application describes a 3D dental intra-oral imaging (3DIO) system that collects a series of 2D image projections. The x-ray imaging system comprises a housing, an x-ray source attached to a articulating or motion gantry configured to move the source within the housing to multiple positions, an x-ray detector array located on an opposite side of an object to be imaged from the x-ray source, where the detector array is synchronized with the x-ray source to capture 2D images of the object when the x-ray source is located in multiple imaging positions, and a processor configured to accept the 2D images and reconstruct a 3D image. The multiple imaging positions can be located on a plane substantially parallel to the x-ray detector array. Other embodiments are described.

    Three-dimensional scanner and scanning method using same
    9.
    发明授权
    Three-dimensional scanner and scanning method using same 有权

    公开(公告)号：US12102465B2

    公开(公告)日：2024-10-01

    申请号：US17414931

    申请日：2019-12-17

    Applicant: DOF INC.

    Inventor： Hyunsoo Park ,  Heungsik Sim

    IPC: A61B6/14 ,  A61B5/00 ,  A61B6/51 ,  A61C9/00

    CPC classification number: A61B6/512 ,  A61B5/0062 ,  A61B5/0088 ,  A61C9/0053 ,  A61C9/006

    Abstract: The present invention relates to a three-dimensional intraoral scanner and an intraoral scanning method using same, the scanner being capable of reducing a matching error generated during a three-dimensional model data generation process for all the teeth in an oral cavity, and the three-dimensional intraoral scanner and the intraoral scanning method using same, according to one embodiment of the present invention, generate three-dimensional model data for all the teeth in an oral cavity by using a large-area scan image, thereby enabling the minimization of cumulative errors generated when the three-dimensional scan data is matched, and match, with the three-dimensional model data, three-dimensional scan data generated by using a narrow-area two-dimensional scan image, thereby enabling improved precision of the three-dimensional model data.

    CT imaging apparatus
    10.
    发明授权
    CT imaging apparatus 有权

    公开(公告)号：US12097056B2

    公开(公告)日：2024-09-24

    申请号：US17616010

    申请日：2020-06-02

    Applicant: PLANMECA OY

    Inventor： Kari Malmén

    IPC: A61B6/03 ,  A61B5/00 ,  A61B6/00 ,  A61B6/04 ,  A61B6/08 ,  A61B6/40 ,  A61B6/51 ,  A61B6/58 ,  A61G15/02

    CPC classification number: A61B6/035 ,  A61B5/0088 ,  A61B6/0407 ,  A61B6/0442 ,  A61B6/0487 ,  A61B6/08 ,  A61B6/4085 ,  A61B6/4452 ,  A61B6/4476 ,  A61B6/51 ,  A61B6/512 ,  A61B6/54 ,  A61B6/587 ,  A61G15/02 ,  A61B6/588

    Abstract: The invention relates, in particular, to features of an apparatus applicable for use in the context of dental or medical CT imaging. The apparatus comprises a two longitudinally extending frame parts 11, 21, a support construction 12 for an X-ray source 14 and an image detector 15 and a first driving mechanism 16 arranged to move them about a rotation axis 13. A patient support 18 comprising a patient support surface 184 is mechanically connected to the first of the substantially longitudinally extending frame parts 11, which extends substantially in parallel with the first longitudinally extending frame part 11 and having at, or at the proximity of its two edges 181 which extend in the same direction as the first longitudinally extending frame part 11 i) at least one support element 183 or ii) at least one connecting construction 182 for at least one support element 83, the support element 183 being an accessory designed for a patient to hold on or help the patient to be still during an imaging exposure, or to help keeping a patient be still.

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