Paper Info
Title
Simulated evaluation of an intraoperative surface modeling method for catheter ablation by a real phantom simulation experiment
Abstract
In this work, we propose a phantom experiment method to quantitatively evaluate an intraoperative left-atrial modeling update method. In prior work, we proposed an update procedure which updates the preoperative surface model with information from real-time tracked 2D ultrasound. Prior studies did not evaluate the reconstruction using an anthropomorphic phantom. In this approach, a silicone heart phantom (based on a high resolution human atrial surface model reconstructed from CT images) was made as simulated atriums. A surface model of the left atrium of the phantom was deformed by a morphological operation simulating the shape difference caused by organ deformation between pre-operative scanning and intra-operative guidance. During the simulated procedure, a tracked ultrasound catheter was inserted into right atrial phantom scanning the left atrial phantom in a manner mimicking the cardiac ablation procedure. By merging the preoperative model and the intraoperative ultrasound images, an intraoperative left atrial model was reconstructed. According to results, the reconstruction error of the modeling method is smaller than the initial geometric difference caused by organ deformation. As the area of the left atrial phantom scanned by ultrasound increases, the reconstruction error of the intraoperative surface model decreases. The study validated the efficacy of the modeling method.
Year
DOI
Venue
2015
10.1117/12.2082478
Proceedings of SPIE
Keywords
DocType
Volume
intraoperative left atrial surface reconstruction,Poisson Equation Reconstruction,intra-cardiac echocardiography,catheter ablation,phantom evaluation
Conference
9415
ISSN
Citations 
PageRank 
0277-786X
1
0.43
References 
Authors
0
5
Name
Order
Citations
PageRank
Deyu Sun131.01
Maryam E. Rettmann238246.20
Douglas L. Packer346.03
Richard A. Robb4645238.12
David R Holmes54220.31