Lo Men-Tzung,Lin Yenn-Jiang,Kuo Huan-Yu,Chang Yi-Chung,Lin Chen,Chang Hsiang-Chih,Chung Fa-Po,Chen Shih-Ann
申请号:
US201514699171
公开号:
US9545210(B2)
申请日:
2015.04.29
申请国别(地区):
美国
年份:
2017
代理人:
SV Patent Service
摘要:
A computer-assisted method for quantitatively characterizing atrial fibrillation in a patient includes recording time series of bipolar atrial fibrillation signals at multiple sites in a patient's atria using two or more electrodes, calculating a similarity index vector by a computer system based on the bipolar atrial fibrillation signal between a first site and its neighboring sites, constructing an similarity-index vector field based on similarity-index vectors at different sites, calculating Curl and Divergence of the similarity-index vector field, calculating Rotor Identification using Curl and Divergence, calculating Focal Identification using Divergence, and determining one or more critical regions in the patient's atria if Rotor Identification is above a first predetermined threshold and Focal Identification is above a second predetermined threshold.