Computerimplementiertes Verfahren zur Erzeugung eines Panoramabildes der Mundhöhle eines Patienten

Details

Veröffentlichungs-Nr.

EP4755307

Anmeldetag

4. Dezember 2024

Veröffentlichung

10. Juni 2026

Rechtsraum

EP

IPC

A61B6/03, A61B6/06, A61B6/51

Abstract

The present invention relates to a computer implemented method of generating a panoramic image of a patient (P), comprising: a step of defining a focal curve (F) relative to the patient's oral cavity (O), wherein the focal curve (F) follows the shape of the jawbone (1) of the patient (P), wherein the focal curve (F) has a predefined thickness (L) which includes at least the teeth (T) to be imaged; a step of acquiring a plurality of two dimensional x-ray projection images of the patient (P) along the focal curve (F) by means of rotating an x-ray source (3), an x-ray collimator (12) and a flat panel x-ray detector (4) around the patient's head in accordance with a predefined trajectory relative to the patient (P), wherein the x-ray collimator (12) is positioned between the patient's head and the x-ray source (3), wherein the collimator (12) has an x-ray aperture (13) to restrict the x-ray cone beam angle, wherein the width of the x-ray aperture (13) is adjustable for varying the x-ray cone beam angle. In the acquisition step, the width of the aperture (13) is continuously varied such that the width of the aperture (13) used to expose the molar region (M) of the focal curve (F) is larger than the width of the aperture (13) used to expose to the incisal region (I); and in the acquisition step, the readout region (R) of the x-ray detector (4) is continuously varied in the horizontal direction such that the readout region (R) of the x-ray detector (4) is equal to or larger that the region of the x-ray detector (4) being actively exposed through the aperture (13).

Anmelder

Firmen

Dentsply Sirona Inc.
SIRONA Dental Systems GmbH

Land

🇺🇸 USA

Fachgebiete