Dr Yoo is a cardiac radiologist and clinical director of the 3D printing program at the Hospital for Sick Children. He is a professor in the Departments of Medical Imaging and Paediatrics at the University of Toronto. His main clinical and research activities are MR and CT applications in children with cardiovascular disease and fetal echocardiography. He has developed a unique training program for cardiac imaging where both radiology and cardiology fellows collaborate closely together in a harmonious and productive manner. He has introduced 3D printing technology to the program. This technique allows preoperative simulation of the surgical procedures in patients with complex congenital heart disease.

Dr. Valverde was appointed as the Section head of the Cardiac MR program and the Director of the 3D Printing program of the Hospital for Sick Children in 2023. He received his medical degree and residency training in Seville, Spain, and pediatric cardiology fellowship in London, UK. He achieved a postgraduate research degree, MD(Res), at the Biomedical Engineering & Imaging Sciences department of King's College London, UK. His PhD thesis in 2022 was Evaluation of Multimodal Imaging for 3D Printing in Congenital Heart Disease.

Brandon is the Manager of the 3DHeartLab and Advanced Surgical Planning and Training programs at The Hospital for Sick Children (SickKids). He leads initiatives that integrate 3D printing, surgical simulation, and personalized surgical planning to advance patient-specific care. Brandon also manages the Hands-On Surgical Training (HOST) Program, an internationally recognized platform that provides surgeons with high-fidelity simulation-based training in congenital heart surgery.

Dr Honjo is the chief cardiovascular surgeon at the Hospital for Sick Children. His clinical practice focuses on open heart surgery in neonates and infants, surgical palliation for single ventricle patients, mechanical cardiopulmonary support in the pediatric population, and surgery for patients with adult congenital heart diseases.

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Dr Honjo is one of the lead surgical proctors for the HOST program at Sickkids and developed the In-House curriculum alongside Dr Yoo and Dr Hussein. He is an integral part of the teaching and validation of the surgical models used in the HOST simulation.

Dr. Rachel Vanderlaan is an attending Cardiovascular surgeon at the Hospital for Sick Children and also preforms adult congenital cardiac surgery at Toronto General Hospital.  She is Course Director for the HOST congenital training bootcamp and the monthly HOST course.

Dr Vanderlaan completed a combined MD/PhD in Molecular Genetics and cardiac surgery residency at the University of Toronto, followed by fellowship training in congenital cardiac surgery at SickKids and additional clinical training at Columbia University before joining staff at SickKids.

Dr Haller is a staff cardiovascular surgeon at the Hospital for Sick Children. His clinical practice focuses on open heart surgery in both pediatric and adult patients with congenital heart disease. Dr Haller attended the inaugural HOST course in 2015 as a delegate whilst a fellow at Sickkids and now is one of the proctors of the course.

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In addition to his other research interests, Dr Haller is exploring the use of 3D-printing to gain further insight into complex aortic arch reconstruction. He is collaborating with the 3D printing team to expand the HOST program to minimally invasive congenital cardiac surgery.

Dr Francesco Bertelli graduated from the University of Padua, where he also attended the Galilean School of Higher Education. He is currently focused on 3D printing applications, surgical simulation, intraoperative guidance, and advanced surgical education.

Francesco joined SickKids as the 3D Research Fellow in July 2024, with his fellowship running through April 2026. He will begin his Clinical Fellowship in May 2026, continuing through June 2027.

Dr. Ross Foley is a pediatric cardiologist and current 3D fellow with a background in engineering and medical image analysis. Trained in Dublin and Belfast, he completed an MD at University College Dublin focused on the use of 3D printing in congenital heart disease. His interdisciplinary expertise supports the advancement of 3D visualization and modeling for clinical decision-making in complex cardiac cases.

Hannah is a Program Manager at the Hospital for Sick Children. Her research is focused on developing computational models to improve surgical training and optimize preoperative planning. Model platforms range from computer- and web-based software to Virtual and Mixed Reality applications. With a background in Mechanical Engineering from the University of Waterloo, Hannah was a co-founding member of a medical device startup, and has designed several novel medical devices at SickKids.

Macy is a Biomedical Engineering student at the University of Guelph and a co-op student at The Hospital for Sick Children. She supports the design and production of congenital heart models for the Hands-on Surgical Training (HOST) Program. Her research focuses on developing a high-fidelity mitral valve simulator to enhance surgical training.

Michael is a Master of Health Sciences candidate in Medical Physiology at the University of Toronto and a practicum student with the 3DHeartLab/HOST team at SickKids. He creates educational video content for congenital cardiac surgery training and assists with HOST simulation sessions. His interests include congenital heart disease, cardiac anatomy, and simulation-based medical training.