Title :
Electro-anatomical four-dimensional mapping of ventricular tachycardia
Author :
Panescu, Dorin ; Nasir, Mansoon ; Masse, Stephan ; Sevaptsidis, E. ; Downar, Eugene
Author_Institution :
Boston Sci., San Jose, CA, USA
Abstract :
The objectives of this study were: 1) to reconstruct the ventricular 3-D geometry by processing intracardiac echo (ICE) images, 2) to reconstruct the nesting position and orientation of the mapping catheters inside the ventricle, 3) integrate the geometrical information with the cardiac activity data recorded with the catheter and 4) to provide anatomic localization of electrical events during clinical ventricular tachycardia (VT). We employed commercially available 64-electrode mapping catheters, ICE equipment, a custom designed EP recording system and custom reconstruction software. In vitro, the positions of basket catheter electrodes were identified correctly. During clinical use, the basket electrode positions were not identified reliably by ICE. However, the nesting position of the basket was identified correctly. The custom software integrated the geometrical information and cardiac activity data off line, during the procedure. Electrical events occurring during VT were correctly displayed on the reconstructed geometry.
Keywords :
diseases; echocardiography; electrocardiography; image reconstruction; medical image processing; basket electrode positions; basket nesting position; cardiac activity data recordings; commercially available 64-electrode mapping catheters; custom reconstruction software; custom software; data integration; electroanatomical four-dimensional mapping; geometrical information; medical diagnostic imaging; reconstructed geometry; ventricular 3-D geometry reconstruction; ventricular tachycardia; Catheters; Electrodes; Frequency; Ice; Image reconstruction; In vitro; Information geometry; Interpolation; TV; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1018947