I appreciate Peteiro and Bouzas-Mosquera’s comments1 on our review of the role of cardiac imaging in the emergency department (ED).2

I agree that in experienced hands exercise echocardiography (echo) and exercise radionuclide myocardial perfusion imaging (MPI) have equivalent diagnostic value. Accordingly, we indicated in the diagram in figure 2 that stress cardiac imaging might consist of either stress MPI or stress echo. I agree that in the “key points” I should have listed exercise echo as one of …