公开(公告)号：US20240374141A1

公开(公告)日：2024-11-14

申请号：US18692594

申请日：2022-08-22

Applicant: Siemens Healthineers AG ,  Dentsply Sirona Inc. ,  SIRONA Dental Systems GmbH

Inventor： Andreas GREISER ,  Edgar MUELLER ,  Lars LAUER ,  Stephan BIBER ,  Mario ZELLER ,  Matthias GEBHARDT ,  Johannes ULRICI ,  Stefan WUNDRAK ,  Titus LANZ ,  Florian ODOJ ,  Tobias WICHMANN ,  Joerg ROTHARD ,  Sebastian DENNERT ,  Marco GEISSNER

IPC: A61B5/00 ,  A61B5/055 ,  G01R33/34

Abstract: A dental coil comprises a first element and a second element. The first element is composed of a dimensionally stable material and has a recess that is configured to receive at least one of a mouth region or a nose region of a patient when the dental coil is positioned on the jaw region of the patient during use. The second element has a flexible element that is configured to allow the flexible element to take the shape of the jaw region of the patient. The first element and the second element have an antenna configured to receive high-frequency signals in a frequency and power range of a magnetic resonance measurement.

公开(公告)号：US20220160323A1

公开(公告)日：2022-05-26

申请号：US17602306

申请日：2020-04-17

Applicant: DENTSPLY SIRONA Inc.

Inventor： Susanne MAUR ,  Stefan WUNDRAK

IPC: A61B6/00 ,  A61B6/03 ,  A61B6/14 ,  G06T11/00

Abstract: The resent invention relates to a method of x-ray projection geometry calibration in x-ray cone beam computed tomography, the method comprising: at least one step (S1) of obtaining two-dimensional x-ray images (1) or a sinogram (2) of at least a part of an object (3), generated through relatively rotating around the object (3) a detector and an x-ray source projecting x-rays towards the detector; characterized by further comprising: at least one step (S4) of detecting in the two dimensional x-ray images (1) or the sinogram (2) at least one feature (3a) of the object (3) by using a trained artificial intelligence algorithm; and at least one step (S5) of creating, based on the detection, calibration information which defines the geometry of the x-ray projection.

公开(公告)号：US20190290190A1

公开(公告)日：2019-09-26

申请号：US16466316

申请日：2017-12-06

Applicant: DENTSPLY SIRONA inc.

Inventor： Volker RASCHE ,  Stefan WUNDRAK

IPC: A61B5/00 ,  A61B5/055 ,  A61B5/11 ,  A61B90/00 ,  A61B6/00 ,  A61C19/045 ,  G01R33/56 ,  G01R33/563

Abstract: Described is a method for detecting and displaying the movement of a temporomandibular joint which connects a lower jaw and an upper jaw by magnetic resonance imaging. A marker is secured to the lower jaw, a marker movement curve is generated using magnetic resonance imaging measurement data sets during a first measurement interval, during which the lower jaw is moved relative to the upper jaw, and a point which corresponds to a first position of the lower jaw relative to the upper jaw is ascertained on the movement curve. An image data set is generated during a second measurement interval, during which the temporomandibular joint is not moved, and a first model, which represents at least one part of the upper jaw and/or a temporal bone part that comprises the temporomandibular joint socket, and a second model, which represents at least one part of the lower jaw, are ascertained therefrom. A movement curve of the second model relative to the first model is calculated and displayed using the marker movement curve.