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Figure 1 Diastolic (A) and systolic (B) coronary flow reserve (CFR) in patients and control subjects (see text for details). Note the steeper slope of the intra-time effect in patients with left anterior descending coronary artery (LAD) disease in the upper panel, who also present with the lower data dispersion both before and after stenting, meaning that diastolic CFR is more suitable than systolic CFR to index pre-stenting versus post-stenting Doppler results.
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