CT-FFR, or computational fluid dynamics derived fractional flow reserve, is a research area that focuses on using computational modeling techniques to calculate the fractional flow reserve in coronary arteries. This technology aims to provide a non-invasive way to assess the functional significance of coronary artery stenosis, helping healthcare professionals make more accurate decisions about treatment options for patients with coronary artery disease. By integrating CT imaging with computational fluid dynamics, CT-FFR offers a novel approach to evaluating the hemodynamic impact of stenotic lesions in the coronary arteries.