Author's summary
While coronary physiology and plaque vulnerability have been considered distinct attributes of coronary artery disease, evaluated from different diagnostic modalities, clinical data and underlying pathophysiology have demonstrated that there is a strong connection between hemodynamic properties and vulnerable plaque. This link suggests that using invasive physiological indexes to identify functional significance may also be somewhat useful in detecting plaque vulnerability. Furthermore, emerging data have suggested the independent and synergistic prognostic value between a physiology-based approach and a plaque-based approach, and understanding the prognostic relevance between the two can optimize risk prediction and treatment decision-making.