TY - GEN
T1 - Updating a preoperative surface model with information from real-time tracked 2D ultrasound using a Poisson surface reconstruction algorithm
AU - Sun, Deyu
AU - Rettmann, Maryam E.
AU - Holmes, David R.
AU - Linte, Cristian A.
AU - Packer, Douglas
AU - Robb, Richard A.
PY - 2014
Y1 - 2014
N2 - In this work, we propose a method for intraoperative reconstruction of a left atrial surface model for the application of cardiac ablation therapy. In this approach, the intraoperative point cloud is acquired by a tracked, 2D freehand intra-cardiac echocardiography device, which is registered and merged with a preoperative, high resolution left atrial surface model built from computed tomography data. For the surface reconstruction, we introduce a novel method to estimate the normal vector of the point cloud from the preoperative left atrial model, which is required for the Poisson Equation Reconstruction algorithm. In the current work, the algorithm is evaluated using a preoperative surface model from patient computed tomography data and simulated intraoperative ultrasound data. Factors such as intraoperative deformation of the left atrium, proportion of the left atrial surface sampled by the ultrasound, sampling resolution, sampling noise, and registration error were considered through a series of simulation experiments.
AB - In this work, we propose a method for intraoperative reconstruction of a left atrial surface model for the application of cardiac ablation therapy. In this approach, the intraoperative point cloud is acquired by a tracked, 2D freehand intra-cardiac echocardiography device, which is registered and merged with a preoperative, high resolution left atrial surface model built from computed tomography data. For the surface reconstruction, we introduce a novel method to estimate the normal vector of the point cloud from the preoperative left atrial model, which is required for the Poisson Equation Reconstruction algorithm. In the current work, the algorithm is evaluated using a preoperative surface model from patient computed tomography data and simulated intraoperative ultrasound data. Factors such as intraoperative deformation of the left atrium, proportion of the left atrial surface sampled by the ultrasound, sampling resolution, sampling noise, and registration error were considered through a series of simulation experiments.
KW - Poisson Equation Reconstruction
KW - intra-cardiac echocardiography.
KW - intraoperative left atrial surface reconstruction
KW - normal vector estimation
UR - http://www.scopus.com/inward/record.url?scp=84902170120&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84902170120&partnerID=8YFLogxK
U2 - 10.1117/12.2042510
DO - 10.1117/12.2042510
M3 - Conference contribution
AN - SCOPUS:84902170120
SN - 9780819498298
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Medical Imaging 2014
PB - SPIE
T2 - Medical Imaging 2014: Image-Guided Procedures, Robotic Interventions, and Modeling
Y2 - 18 February 2014 through 20 February 2014
ER -