Dantas RN, et al. - Using a multiphase protocol, the researchers intended to assess agreement between rubidium-82 positron emission tomography (⁸²RbPET) and 320-detector row CT (320-CT) myocardial perfusion imaging (MPI) in suspected coronary artery disease (CAD) patients. For this study, 44 patients referred for MPI evaluation were prospectively recruited and underwent dipyridamole stress ⁸²RbPET and multiphase 320-CT MPI. The data presented in this work showed a significant agreement between dipyridamole stress 320-CT MPI and ⁸²RbPET MPI in the evaluation of suspected CAD patients of intermediate risk. Findings revealed that the multiphase 320-CT MPI protocol was feasible, diagnostic and with relatively low radiation exposure.