Bewegungskompensationsvorrichtung und Bewegungskompensationsverfahren

Details

Veröffentlichungs-Nr.

EP4814876

Anmeldetag

24. März 2026

Veröffentlichung

30. September 2026

Rechtsraum

EP

IPC

G06T12/10

Abstract

A motion compensation apparatus according to an embodiment, includes an acquisition unit (110), a determination unit (120), a first reconstruction unit (120), a estimation unit (130) and a second reconstruction unit (140). The acquisition unit (110) acquires projection data scanned from an imaging object by the computed tomography imaging system. The determination unit (120) determines a target time point for which a motion-corrected image of the imaging object is to be reconstructed. The first reconstruction unit (120) reconstructs first and second groups of feature-enhanced partial images, based on, respectively, first and second sets of the projection data, the first and second sets of the projection data being on opposite sides of the target time point. The estimation unit (130) is configured to estimate a motion vector field for the target time point, based on the first and second groups of feature-enhanced partial images. The second reconstruction unit (140) is configured to perform, based on the motion vector field, motion compensation on the projection data to reconstruct an image of the imaging object, as the motion-corrected image for the target time point.

Anmelder

Firma

Canon Medical Systems Corporation

Land

🇯🇵 Japan

Fachgebiete