Retrospective sorting of 4d ct into breathing phases based...

G - Physics – 06 – T

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G06T 5/00 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2651994

A respiratory marker (40, 140, 240, 340, 440) includes an elongated detectable portion (42, 342, 442) that is operatively coupled with respiration of an imaging subject such that the elongated detectable portion moves with the respiration. The elongated detectable portion is arranged to intersect images acquired by an imaging scanner (10) at different times and at different positions along a scanner axis (20), and is detectable as a marker feature in the images. A marker position finder (52, 54) is configured to determine positions of the marker features in the images.

Un marqueur respiratoire (40, 140, 240, 340, 440) comprend une partie détectable allongée (42, 342, 442) qui est couplée fonctionnelle à la respiration d'un sujet d'imagerie de sorte que la partie détectable allongée se déplace avec la respiration. La partie détectable allongée est disposée de manière à entrecroiser les images acquises par un dispositif de balayage d'imagerie (20) à différents moments et selon différentes positions le long d'un axe de balayage (20) et est détectable en tant que caractéristique de marqueur dans les images. Un positionneur de marqueur (52, 54) est configuré pour déterminer des positions des caractéristiques du marqueur dans les images.

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