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Headshot of Shi-Joon Yoo

Shi-Joon Yoo

Title: Staff Cardiac Radiologist, Division of Cardiac Imaging, Department of Diagnostic Imaging
Designations: PhD, MD
Phone: 416-813-6037
Alternate Contact Name: Caroline Robertson
Alternate Phone: 416-813-6029
Alternate Email:
U of T Positions: Professor, Medical Imaging

Research Positions

Project Investigator


Dr. Yoo is a paediatric cardiac radiologist. He is a Professor of the Departments of Medical Imaging and Paediatrics at the University of Toronto. His main clinical and research activities are Magnetic Resonance (MR) and Computerized Tomography (CT) applications in children with cardiovascular disease and fetal echocardiography. He is an early adopter of hemodynamic assessment of congenital heart diseases using MRI and 3D printing in paediatric cardiology and surgery. Using 3D printed or silicone-molded heart models, with his colleague cardiovascular surgeons, Dr. Yoo leads the Hands-On Surgical Training (HOST) Course for congenital heart surgery at both SickKids and worldwide since 2015.


Dr. Yoo's research is focussed on pragmatic utilization of newly-developing imaging technologies and concepts. They include functional/hemodynamic assessment of paediatric heart diseases using MRI, and 3D imaging for surgical planning and training for congenital heart surgery. He envisions current computer screen-based imaging reporting systems will be replaced by space-based reporting systems using virtual, augmented and mixed reality.

Education and experience

  • 1999–Present: Professor of Medical Imaging and Paediatrics, University of Toronto and The Hospital for Sick Children, Toronto, Ontario, Canada
  • 1999–2012: Staff Radiologist, Section Head, Cardiac Imaging, Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada
  • 1995–1998: Freelance cardiac radiologist
  • 1989–1995: Assistant Professor, Ulsan University - Asan Medical Center, Seoul, Korea
  • 1991–1992: Visiting Professor/Cardiovascular imaging fellowship, Diagnostic Imaging, The Hospital for Sick Children
  • 1985–1989: Radiologist-in-Chief, Sejong Heart Center, Pucheon, Korea
  • 1978–1982: Radiology residency, Seoul National Univerity Hospital
  • 1978–1988: Postgraduate Course, Master and PhD degrees, Seoul National University
  • 1971–1977: Medical School, Seoul National University

University appointments

  • 1999–Present: Professor of Radiology and Paediatrics, University of Toronto, Toronto, Ontario, Canada
  • 1995–1999: Consultant Radiologist, Diagnostic Radiology, Ulsan University / Asan Medical Center, Seoul, Korea
  • 1991–1992: Visiting Professor/Research FellowDiagnostic Radiology, University of Toronto and SickKids, Toronto, Ontario
  • 1993–1995: Associate Professor, Diagnostic Radiology, Ulsan University - Asan Medical Center, Seoul, Korea
  • 1989–1993: Assistant Professor, Diagnostic Radiology, Ulsan University / Asan Medical Center, Seoul, Korea
  • 1986–1989: Clinical Assistant Professor of Radiology, Seoul National University, Seoul, Korea


  • 2005: Presidential Recognition Award. Society for Pediatric Radiology 2005. In recognition of the individual whose energy and creativity have made a significant impact on the work of the Society and its service to its members. 


  1. Yoo SJ, Lee YH, Kim ES, et al. Three-vessel view of the fetal upper mediastinum: an easy means of detecting abnormalities of the ventricular outflow tracts and great arteries during obstetric screening. Ultrasound Obstet Gynecol. Mar 1997;9(3):173-82. doi:10.1046/j.1469-0705.1997.09030173.
  2. Kang IS, Redington AN, Benson LN, et al. Differential regurgitation in branch pulmonary arteries after repair of tetralogy of Fallot: a phase-contrast cine magnetic resonance study. Circulation. Jun 17 2003;107(23):2938-43. doi:10.1161/01.CIR.0000077064.67790.5B
  3. Grosse-Wortmann L, Al-Otay A, Yoo SJ. Aortopulmonary collaterals after bidirectional cavopulmonary connection or Fontan completion: quantification with MRI. Circ Cardiovasc Imaging. May 2009;2(3):219-25. doi:10.1161/CIRCIMAGING.108.834192
  4. Yoo SJ, Thabit O, Kim EK, et al. 3D printing in medicine of congenital heart diseases. 3D Print Med. 2015;2(1):3. doi:10.1186/s41205-016-0004
  5. Yim D, Nagata H, Lam CZ, et al. Disharmonious Patterns of Heterotaxy and Isomerism: How Often Are the Classic Patterns Breached? Circ Cardiovasc Imaging. 02 2018;11(2):e006917. doi:10.1161/CIRCIMAGING.117.006917

See a full list of Dr. Yoo's publications


  • 2022–2026: CIHR Grant (Principal Applicant). Personalized aortic arch reconstruction using patient-specific graphically designed surgical patch (PI, David Barron), $400,000 CAD
  • 2021–2022: HSBC Catalyst Research Grant Dragon's Den. Personalized aortic arch reconstruction using patient specific graphically designed surgical patch. SickKids, $25,000 CAD
  • 2021–2022: Labatt Heart Centre Innovation Funds. Silicone modeling, opening a new horizon in hands-on surgical training of congenital heart surgery, $25,000 CAD

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