Embodiments of the invention are directed to a method of performing
computerized simulations of image-guided procedures. The method may
include producing a digital image-based model of an anatomical structure
based on medical image data, producing, based on the image-based model
and extrapolated data, an extended model that represents the anatomical
structure and adjacent anatomical regions not included in the medical
image data, displaying a graphical representation of the extended model
and performing a computerized simulation of an image-guided procedure
using the extended model.