To understand the fundamental principles of positron emission tomography (PET) technology and its application in cardiac imaging. To recognize the advantages of PET imaging, including its quantitative nature, superior sensitivity, and higher spatial and temporal resolution, compared with other nuclear modalities. To learn about the integration of PET with computed tomography (CT) and its impact on cardiovascular imaging. To comprehend the process of positron emission, annihilation, and the detection of γ-rays in PET imaging. To explore the main clinical applications of PET in assessing myocardial perfusion, viability, metabolism, and innervation.