REGISTRATION OF DEFORMABLE STRUCTURES

Abstract: a 2d x-ray system includes an x-ray illumination system constructed to illuminate an object with an x-ray beam, a detection system arranged to receive at least a portion of said x-ray beam after passing through at least a portion of said object, and a system for registering a 2d x-ray image to a 3d x-ray image. the system includes a computer processor and computer memory that includes non-transient code, which when executed by said computer processor causes the computer processor to perform a method that includes generating multiple 2d projection images from a 3d x-ray image of the object, and registering said 2d x-ray image to one of said 2d projection images. said registering uses a similarity metric that is differentially weighted to affect an influence of at least one of low-contrast or high-contrast structures on the registering between said 2d x-ray image and each of said 2d projection images.

Inventor(s): Jeffrey H. SIEWERDSEN, Rohan VIJAYAN

CPC Classification: G06T7/74 ({involving reference images or patches})

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