Röntgenstrahlensystem und Verfahren zur Erzeugung eines 3D-Röntgenbildes

Details

Veröffentlichungs-Nr.

EP3827750

Aktenzeichen

EP19212720

Anmeldetag

29. November 2019

Veröffentlichung

28. Februar 2024

Erteilung

28. Februar 2024

Rechtsraum

EP

IPC

A61B6/06A61B6/00G21K1/02G06T11/00// A61B6/03A61B6/02A61B6/10

Abstract

The invention relates to a 3D X-ray device (1) comprising an X-ray detector (2), an X-ray source (3) and a computer (4), wherein the X-ray detector (2) and the X-ray source (3) are moved about an object volume (6) to be recorded on movement paths (5, 7) with a rotation of at least 185°, wherein a plurality of X-ray projection images are recorded from different irradiation directions (8), whereby X-rays (9), which are produced by means of the X-ray source (3), irradiate the object volume (6) in one of the irradiation directions (8) and are captured by the X-ray detector (2), wherein a 3D X-ray image (10) of the object volume (6) is calculated from the recorded X-ray projection images by means of a reconstruction method. The X-ray detector (2) is arranged asymmetrically relative to a central axis (12) through a center of rotation (13) of the 3D X-ray device (1), wherein a first fan beam (14) and an opposite second fan beam (17) rotated 180° form an overlap region (18), wherein at least one X-ray filter (21) is disposed between the X-ray source (3) and the object volume (6) for attenuating an X-ray dose inside the overlap region (18).

Anmelder

Firmen

SIRONA Dental Systems GmbH
DENTSPLY SIRONA Inc.

Land

🇩🇪 Deutschland

Fachgebiete