Patent ID: 9008381
Filing Date: 2015-04-14
Classification: A61B,G06T

Abstract:
1. An image-processing method for estimating a brain shift of a patient, the method comprising: processing a three-dimensional image of a brain of the patient, acquired prior to a surgical operation, to obtain a reference cerebral arterial tree structure of the patient; processing bidimensional images of the brain of the patient, acquired during the operation in a determined volume along secant or parallel acquisition planes, comprising selecting centers of vessels contained in each bidimensional image to produce a scattergram and using the scattergram to reconstitute at least partially a current cerebral arterial tree structure of the patient; determining, from mapping of the reference and current cerebral arterial tree structures, a shift field of a vascular tree representing a shift of a current vascular tree relative to a reference vascular tree; applying the determined shift field of the vascular tree to a biomechanical model of the brain of the patient for estimating the brain shift of the patient; and generating, from the estimated brain shift, at least one image of the brain of the patient in which the brain shift is compensated.