Ct-Bewegungskompensation

Details

Veröffentlichungs-Nr.

EP4756719

Anmeldetag

5. Dezember 2024

Veröffentlichung

10. Juni 2026

Rechtsraum

EP

IPC

G06T11/00, G06T7/20, A61B6/03

Abstract

Proposed concepts thus aim to provide schemes, solutions, concept, designs, methods and systems pertaining to compensating for motion during a CT scan. In particular, embodiments aim to provide a method for compensating for motion during a CT scan by obtaining two CT scan volumes of the same portion of a subject (and which at least partially overlap in time) and then taking one slice of one of the CT scan volumes and generating a reference motion state (i.e., a ground truth reference) based on the subject's motion state at the point of time of the selected slice. Based on this reference motion state and the first and second CT scan volumes, a time-dependent rigid transformation function can be generated (i.e., a transformation function which only uses rigid transformations) and then either applied directly to the first and second CT scan volumes to compensate for their motion or applied to the original projection data to generate a motion-compensated CT scan volume from scratch.

Anmelder

Firma

Koninklijke Philips N.V.

Land

🇳🇱 Niederlande