NON-RIGID 2D/3D REGISTRATION OF CORONARY ARTERY MODEL WITH LIVE FLUOROSCOPIC IMAGE

摘要

PROBLEM TO BE SOLVED: To provide a method for non-rigid registration of digital 3D coronary artery models with 2D fluoroscopic images during a cardiac intervention.SOLUTION: The method includes the steps of: providing a digitized 3D centerline of a coronary artery tree (step 90); globally aligning the 3D centerline to at least two 2D fluoroscopic images (step 91); and non-ridigdly registering the 3D centerline to at least two 2D fluoroscopic images by minimizing an energy functional (step 93). The energy functional includes a summation of square differences between reconstructed centerline points and registered centerline points, a summation of squared 3D registration vectors, a summation of squared derivative 3D registration vectors, and a myocardial branch energy.