This is a hybrid in-person and online event. Pre-registration is required for either. Medical image-based modeling and digital twins have emerged as powerful tools to support patient-specific cardiac surgical planning in adults and children. This presentation will discuss 3D modeling techniques that provide a complete pipeline from medical image segmentation to 3D anatomic models and blood flow simulations. The technology that makes this possible was recently extended to model the whole heart, including blood flow, tissue mechanics, electrophysiology, cardiac contraction, and heart valves. This presentation will also discuss recent applications of tools for clinical decision support. A first example is in adult cardiac surgery, where patient-specific modeling has been applied for vein graft failure prevention after coronary bypass graft surgery. Another example is in pediatric cardiac surgery where models have been used for clinical decision support in valve repair, flow re-direction, and bi-ventricular reconstruction. The program will conclude with a discussion of the open-source software and data resources that are available via the (https://simvascular.github.io/) and the (https://www.vascularmodel.com/). Speaker(s): Alison Marsden, 567 Yosemite Dr, Milpitas, California, United States, 95035, Virtual: https://events.vtools.ieee.org/m/497126