Dentsply Sirona Inc.

Sirona Dental Systems Gmbh

Wolf Blecher

Ulrich Schulze-Ganzlin

Kai Lindenberg

Christian Beckhaus

Johannes Ulrici

Michael Elvers

Kai Stannigel

Franziska Riversa

A 3D X-ray device including an X-ray detector, an X-ray source and a computer. The X-ray detector and the X-ray source are moved about an object volume to be recorded on movement paths with a rotation of at least 185°. A number of X-ray projection images are recorded from different directions. X-rays irradiate the object volume in one of the irradiation directions and are captured by the detector. A 3D X-ray image of the object volume is calculated from the recorded X-ray projection images by a reconstruction method. The X-ray detector is arranged asymmetrically relative to a central axis through a center of rotation of the 3D X-ray device. A first fan beam and an opposite second fan beam rotated 180° form an overlap region. At least one X-ray filter is placed between the X-ray source and the object volume for attenuating an X-ray dose inside the overlap region.

3D X-ray device and method for producing a 3D X-ray image

An apparatus for real-time visualizing a movement of a lower jaw versus an upper jaw including: an input interface for receiving a two-dimensional image signal of the craniomaxillofacial area of the patient from a camera and a three-dimensional jaw model of the craniomaxillofacial area of the patient being precalculated based on volume data; a registration unit for registering the three-dimensional jaw model with the two-dimensional image signal in a first jaw position of the lower jaw versus the upper jaw and in a second jaw position of the lower jaw versus the upper jaw; an imaging unit for generating a two-dimensional depth-view of the craniomaxillofacial area from the three-dimensional jaw model based on the conducted registrations and the two-dimensional image signal, the two-dimensional depth-view including a structure underlying an image area of the two-dimensional image signal; and an output interface for outputting the two-dimensional depth-view.

Apparatus for real-time visualizing a movement of a lower jaw versus an upper jaw in a craniomaxillofacial area of a patient in dental diagnostics

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Hemsbach, Germany

Wolf Blecher