Fig. 3From: Index of contractile asymmetry improves patient selection for CRT: a proof-of-concept studyDivision of left ventricle into 12 sectors. The circle represents left ventricle (LV) from the bull’s-eye view. The dashed line depicts right ventricle. Zero degrees correspond to the LV anterior wall in the two-chamber view. RV, right ventricle; 2ch, two-chamber view; 3ch, three-chamber view; 4ch, four-chamber viewBack to article page