2016 Volume 54Annual Issue 28AM-Abstract Pages S278
Spiral wave is a recognized cause of tachycardia. Tracking the spiral core is essential for understanding the spiral wave dynamics. Previously, identification method of the core was suggested, which detects the core as a phase singularity (PS) in a phase map. A quantitative technique to identify PS in an optical mapping image was also suggested. However, because of a large number of errors, it was still difficult to track the core automatically.
In this study, we suggest a new analysis method of spiral wave. The method quantifies the spatial variance in a phase map. In this phase variance map, the spiral core appears as the peak of phase variance distribution. Using this method, we evaluated the trajectory of the spiral core after point electric stimuli were applied. As a result, we found a correlation between stimulation condition and the spiral wave shift.
