Authors: Cristian A Linte John Moore Chris Wedlake Daniel Bainbridge Gérard M Guiraudon Douglas L Jones Terry M Peters
Publish Date: 2008/11/15
Volume: 4, Issue: 2, Pages: 113-
Abstract
A system was developed to provide a virtual reality VR environment that integrates preoperative imaging realtime intraoperative guidance using 2D transesophageal ultrasound and models of the surgical tools tracked using a magnetic tracking system Detailed 3D dynamic cardiac models were synthesized from highresolution preoperative MR data and registered within the intraoperative imaging environment The featurebased registration technique was employed to fuse pre and intraoperative data during in vivo intracardiac procedures on porcine subjectsThis method was found to be suitable for in vivo applications as it relies on easily identifiable landmarks and hence it ensures satisfactory alignment of pre and intraoperative anatomy in the region of interest 48 mm RMS alignment accuracy within the VR environment Our initial experience in translating this work to guide intracardiac interventions such as mitral valve implantation and atrial septal defect repair demonstrated feasibility of the methods
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