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Figure 3 Correlations for MR-MT Circumferential Dyssynchrony (CURE), TDI Septal-Lateral Delay, and QRSd

The modest correlation between CURE and QRS duration (QRSd) is shown (r = –0.58, p < 0.001) for all 43 subjects in the cardiac resynchronization therapy heart failure (CRT-HF) and multimodality cohorts (A). For the multimodality cohort only (B), CURE and the tissue Doppler imaging (TDI) septal-lateral delay are shown versus QRSd. As expected (based on prior published data), there is no correlation between TDI and QRSd (r = 0.04, p = 0.83), but there is a significant correlation between CURE and QRSd (r = –0.60, p = 0.001) (B). The CURE-QRSd correlation is also shown (C) for the CRT-HF cohort only (r = –0.40, p = 0.08). Abbreviations as in Figure 1.