Figure 1From: Empiric versus imaging guided left ventricular lead placement in cardiac resynchronization therapy (ImagingCRT): study protocol for a randomized controlled trial Study design. Flow chart describing the ImagingCRT study design. Randomization is stratified according to presence or absence of coronary artery disease. AV, atrioventricular; CT, computed tomography; LV, left ventricle; SPECT, single-photon emission computed tomography; VV, interventricular.Back to article page