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About Sickkids
About SickKids

Mary-Louise Greer, MBBS FRANZCR

The Hospital for Sick Children
Staff Radiologist
Diagnostic Imaging

University of Toronto
Assistant Professor
Medical Imaging


Phone: 416-813-7874
Fax: 416-813-7591
Email: mary-louise.greer@sickkids.ca
Alternate Contact: Cindy Sawyer
Alternate Phone: 416-813-6888
Alternate Email: cindy.sawyer@sickkids.ca

Brief Biography

Dr. Greer has been on staff as a paediatric radiologist in the general division since June 2011.  She completed her undergraduate medical degree (MBBS) at The University of Queensland in 1989 and radiology training at The Princess Alexandria Hospital, both in Brisbane, Australia, becoming a Fellow of the Royal Australian and New Zealand College of Radiologists (FRANZCR) in 2000.

Greer's association with SickKids started in 1999, when she undertook fellowships in paediatric body imaging and body intervention.  She returned to SickKids from 2009 to 2010 to complete a fellowship in cardiac MRI.

Greer has practiced as a paediatric radiologist in the public and private sector since 2000.  She has served as Director of Radiology at the Royal Children's Hospital in Brisbane from 2003 to 2006, when their dedicated MRI service was established, and President of the Australian and New Zealand Society for Paediatric Radiology from 2008 to 2009.  She has a strong interest in all aspects of paediatric MRI, with a special interest in advanced MRI techniques, body MRI and bowel imaging in particular.

In addition to enjoying teaching fellows, residents and medical students within the hospital and as Assistant Professor at The University of Toronto,  Greer is actively involved in research both locally and internationally, collaborating with colleagues in gastroenterology, orthopedics and oncology.

Academic Background

Projects/ Initiatives:

  1. ImageKids project is an international initiative to develop an MR based scoring system fo paediatric IBD. There are currently 29 sites across the globe enrolled, with SickKids being one of 2 main centre. This is the first scoring system of its kind for children with IBD.
  2. Sits on the executive committee for the IBD Centre at SickKids.
  3. Paediatric IBD imaging course, first offered in 2012 at SickKids (CIHR) grant.
  4. Magnetization transfer ratio (MTR) to assess bowel fibrosis in IBD (UofT grant).
  5. Comparison of MRE and pelvis MRI in screening for perianal fistulae in Crohn's disease (SickKids grant).

Research Interests

Pediatric body MRI as well as advances MRI applications, Inflammatory Bowel Disease (IBD) using Magnetic Resonance Enterography (MRE) and Pelvic MRI, Ultrasound of neck cysts (with ENT), CT chest MIP screening of lung metastases, X-Ray dose reduction in nasojejunal tube (NJT) insertion.