Method and apparatus for cone beam ct dynamic imaging

Details Method and apparatus for cone beam ct dynamic imaging Method and apparatus for cone beam ct dynamic imaging

A - Human Necessities

61

B

A61B 6/03 (2006.01)

Patent

CA 2643931

A cone-beam scanning system scans along a half circle. The reconstruction uses a weighting function which decreases for rows farther from the scan plane to take the redundancy of the projection data into account. Another embodiment uses a circle plus sparse helical scan geometry. Image data can be taken in real time.

L'invention concerne un système de balayage à faisceau conique balayant en demi-cercle. La reconstruction utilise une fonction de pondération qui diminue lorsque les rangées s'éloignent du plan de balayage, de manière à prendre en compte la redondance des données de projection. Dans un mode de réalisation, une géométrie de balayage circulaire et une géométrie de balayage légèrement hélicoïdal sont utilisées. Des données d'images peuvent être prises en temps réel.

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