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About Sickkids
About SickKids

Amer Shammas, MD, FRCPC

The Hospital for Sick Children
Radiologist - Nuclear Medicine
Diagnostic Imaging

Division Head of Nuclear Medicine
Diagnostic Imaging

University of Toronto
Assistant Professor
Medical Imaging

Phone: 416-813-6089
Fax: 416-813-7591
Email: amer.shammas@sickkids.ca
Alternate Contact: Caroline Robertson
Alternate Phone: 416-813-6029
Alternate Email: caroline.robertson@sickkids.ca

Brief Biography

Dr. Amer Shammas has been Interim Head of the Division of Nuclear Medicine since July 2013.  Dr. Shammas received his medical degree from Damascus University, Faculty of Medicine in Syria in 1996. Then, he started his Diagnostic Radiology residency program in Syria and completed his Nuclear Medicine residency program at Loyola University Medical Center in Illinois, USA in 2004. Subsequently, Dr. Shammas completed a PET fellowship at the University of Pittsburgh Medical Center in Pennsylvania, USA in 2005. Recently, he completed his fellowship in Pediatric Nuclear Medicine in the Department of Diagnostic Imaging at The Hospital for Sick Children. He is a member of Radiological Society of North America, Canadian Society of Nuclear Medicine, and Society of Nuclear Medicine. Dr. Shammas’ main research interests are molecular imaging and PET.

Academic Background

Project/ Initiatives:

  1. FDG PET/CT in the evaluation of PTLD in children following solid organ transplantation.
  2. FDG PET imaging for thyroid cancer.
  3. I-131- MIBG: New oncologic therapy.
  4. Initiative: FLT PET for brain tumors.

Research Interests

Nuclear Medicine Imaging, PET/CT Imaging, Radionuclide scans, Bone Mineral Density (BMD), Imaging inflammatory diseases, FDG PET imaging for monitoring response of therapy in pediatric oncology, BRain PET for epilepsy.


Hong T, Shammas A, Charron M, Zukotynski K, Drubach L, Lim R. Brown adipose tissue 18F-FDG uptake in pediatric PET/CT imaging. Pediatr Radiol. Volume 41, Issue 6 (2011), Page 759.

Gupta P, Babyn PS, Shammas A, Miller SF. Brown fat distribution in the chest wall of infants-normal appearance, distribution and evolution on CT scans of the chest.  Pediatr Radiol. 2011 Aug;41(8):1020-7. Epub 2011 Jun 4.

Hong T, Shammas A, Navarro OM, Punnett A. Osteonecrosis in an adolescent with non-hodgkin lymphoma resembling a new metastatic lesion on 18F-FDG PET/CT. Pediatr Radiol. 2010;40 (Suppl 1):S27-S29.

Shammas A, Lim R, Charron M. Pediatric FDG PET/CT: Physiologic uptake, normal variants, and benign conditions. Radiographics 2009;29:1467-1486.

Parida L, Morrisson GT, Shammas A, et al. Role of lymphoscintigraphy and sentinel lymph node biopsy in the management of pediatric melanoma and sarcoma. Pediatr Surg Int. 2012 Apr 22. [Epub ahead of print]