Systems and methods for restoring a medical image affected...

G - Physics – 06 – T

Patent

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G06T 5/00 (2006.01) A61B 5/00 (2006.01) A61B 8/12 (2006.01) G10K 11/35 (2006.01) A61B 8/08 (2006.01) G01S 7/531 (2006.01) G01S 15/89 (2006.01)

Patent

CA 2663898

The field of the invention relates to medical imaging systems, and more particularly to systems and methods for restoring a medical image affected by nonuniform rotational distortion. In one embodiment, an imaging system includes an imaging catheter having proximal and distal sections, an imaging device coupled to the distal section of the imaging catheter, said imaging device configured to rotate at a uniform angular velocity, and a processor electrically coupled to imaging device, said processor configured to generate a plurality of vectors as the imaging device rotates to form a medical image, estimate an instantaneous angular velocity of the imaging device as the imaging device rotates, and remap the plurality of vectors in the event that the estimated instantaneous angular velocity differs from the uniform angular velocity.

L'invention concerne des systèmes d'imagerie médicale, et plus particulièrement des systèmes et des procédés permettant de restaurer une image médicale affectée par une distorsion de rotation non uniforme. Dans un mode de réalisation, un système d'imagerie comporte un cathéter d'imagerie comprenant une section proximale et une section distale; un dispositif d'imagerie est située à la section distale du cathéter d'imagerie, le dispositif d'imagerie étant conçu pour tourner à une vitesse angulaire uniforme; un processeur est couplé électriquement au dispositif d'imagerie, le processeur étant conçu pour générer une pluralité de vecteurs lorsque le dispositif d'imagerie tourne afin de former une image médicale, d'estimer une vitesse angulaire instantanée du dispositif d'imagerie lorsque le dispositif d'imagerie tourne et de recartographier la pluralité de vecteurs dans le cas où la vitesse angulaire instantanée estimée différente de la vitesse angulaire uniforme.

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