Patent ID: 9427201
Filing Date: 2016-08-30
CPC Classification: A61B,G06T

Claim Text:
1. A method, comprising: acquiring a plurality of two-dimensional (2D) angiographic images with two or more orientations of an angiographic imaging system, each orientation having an unknown imaging geometry, wherein each of the plurality of 2D angiographic images includes a projection of a plurality of non-invasive fiducial markers having a known three-dimensional (3D) configuration; registering, by a processing device, selected 2D angiographic images to a 3D scan volume produced by a 3D imaging system, wherein the imaging geometry of each orientation of the angiographic imaging system is unknown with respect to the 3D imaging system prior to acquiring the plurality of 2D angiographic images, wherein registering selected 2D angiographic images to the 3D scan volume comprises: determining the imaging geometry of each of the two or more orientations of the angiographic imaging system from the projection of the plurality of non-invasive fiducial markers in each of the 2D angiographic images and the known 3D configuration of the plurality of non-invasive fiducial markers; identifying contours of a target vasculature in one or more of the plurality of 2D angiographic images in each of the two or more orientations; back-projecting the contours of the target vasculature, through the imaging geometry of the two or more orientations, to a 3D object space; and rendering a volume of the target vasculature in the 3D object space.