Patent ID: 8929631
Filing Date: 2015-01-06
Classification: A61B,A61F,G06K,G06T,G16H

Abstract:
1. A method for adapting a reference image, comprising: extracting an assumed course of the blood vessels from the reference image; introducing an instrument into a target region which deforms the assumed course of the blood vessels; detecting a position of the introduced instrument in a fluoroscopic image; identifying a current vessel course based on the position of the introduced instrument in the fluoroscopic image; registering and overlaying the reference image with the fluoroscopic image which comprises a deformation as a result of the introduced instrument; correcting the deformation in the overlaid reference image based on the current vessel course so that the current vessel course and the assumed course of the blood vessels are consistent; and extrapolating a part of the current vessel course in which the instrument has not been introduced in the overlaid reference image based on smoothness condition, wherein the smoothness condition comprises no abrupt bends on the blood vessels.