Dr. Valerie Poirier

Meet Dr. Valerie Poirier

DVM, DACVIM (Oncology), DACVR (Radiation Oncology)

Profile(s): University of Guelph Experts, Department of Clinical Studies, Institution for Comparative Cancer Investigation

Keywords: Chemotherapy, veterinary oncology, radiation oncology, surgical oncology, pathology

Current Positions:

  • Associate Professor – Department of Clinical Studies, University of Guelph, Ontario Veterinary College.
  • Medical and Radiation Oncologist – Health Sciences Centre Animal Cancer Centre, University of Guelph, Ontario Veterinary College. 

Seeking Partnerships in the Areas of:

Radiation target contouring, Imaging for cancer staging

Education and Employment Background:


  • 2004-2006 – Resident, Radiation Oncology, University of Zürich, Vetsuisse Faculty, Tierspital, Diagnostic Imaging and Radiation Oncology, Zürich, Switzerland
  • 2000-2003 – Resident, Medical Oncology, University of Wisconsin-Madison, School of Veterinary Medicine, Department of Medical Sciences, Madison, WI, USA
  • 1999 – IPSAV, Certificate of Internship in Veterinary Applied Science, University of Montreal, Faculty of Veterinary Medicine, Department of Clinical Studies, St-Hyacinthe, Quebec, Canada
  • 1998 – DMV, Doctor of Veterinary Medicine, University of Montreal, Faculty of Veterinary Medicine, St-Hyacinthe, Quebec, Canada

Professional titles

  • 2018 – Associate Member of the Australia New Zealand College of Veterinary Scientist-Oncology Chapter-MANZCVS (Oncology)
  • 2018 – Diplomate of the European College of Veterinary Internal Medicine-Companion Animal (add Rad Oncol)-DECVIM (add Rad Onc)
  • 2006 – Diplomate of the European College of Veterinary Internal Medicine-Companion Animal (Oncology)-DECVIM (Oncology)
  • 2006 – Diplomate of the American College of VeterinaryRadiology (Radiation Oncology)-DACVR (Radiation Oncology)
  • 2003 – Diplomate of the American College of Veterinary Internal Medicine (Oncology)-DACVIM (Oncology)

Employment Background

  • 2015-2019 – Senior Lecturer in Small Animal Medical Oncology, Massey University, Palmerston North, New Zealand
  • 2015-2019 – Adjunct Faculty in Radiation Oncology, Animal Cancer Centre, Ontario Veterinary College,University of Guelph, Guelph, Ontario, Canada
  • 2018 – Radiation Oncologist, Sydney Animal Specialty Hospital (SASH), North Ryde, New South Wales, Australia
  • 2011-2015 – Radiation Oncologist, Animal Cancer Centre, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
  • 2007-2011 – Medical Oncologist and Radiation Oncologist, Brisbane Veterinary Specialist Centre, Albany Creek, QLD, Australia
  • 2003-2007 – Medical Oncologist-Oberassistant, University of Zürich, VetSuisse Faculty, Tierspital, Diagnostic Imaging and Radiation Oncology, Zürich, Switzerland

Research Themes & Interests:

In the last 10 years, the veterinary radiation oncology world got access to the technological jump that occurred in human radiation oncology.  We now have the same machine and the same technology so the veterinary patients both dogs and cats are now the perfect translational model for newer protocol or combined therapies.

Recent Research Focuses & Partnerships:

  • Multicenter studies with other world-wide veterinary radiation oncology program on the outcome of veterinary patients treated with radiation therapy mostly intensity modulated radiation therapy.
  • Studies on the target definition for canine brain tumors
  • Studies on dose limits and organ at risk in veterinary patients

Select Publications:

  • Poirier VJ, Matsuyama A, Kim C, Darko J, Fleck A. Clinical‐dosimetric relationship between lacrimal gland dose and keratoconjunctivitis sicca in dogs with sinonasal tumors treated with radiation therapy. Journal of Veterinary Internal Medicine. 2020 Mar;34(2):867-72.
  • Van Asselt N, Christensen N, Meier V, Rohrer Bley C, Laliberte S, Poirier VJ, Desai N, Chen Y, Turek M. Definitive‐intent intensity‐modulated radiation therapy provides similar outcomes to those previously published for definitive‐intent three‐dimensional conformal radiation therapy in dogs with primary brain tumors: A multi‐institutional retrospective study. Veterinary Radiology & Ultrasound. 2020 May 1.
  • Stiborova K, Meier VS, Takada M, Turek M, Poirier VJ, Laliberte S, Rohrer Bley C. Definitive‐intent radiotherapy for sinonasal carcinoma in cats: A multicenter retrospective assessment. Veterinary and Comparative Oncology. 2020 Mar 5.
  • Chandrakumar SS, zur Linden A, Owen M, Pemberton S, Pinard CL, Matsuyama A, Poirier VJ. Computed tomography measurements of intraocular structures of the feline eye. Veterinary Record. 2019 May 25;184(21):651.
  • Meier VS, Beatrice L, Turek M, Poirier VJ, Cancedda S, Stiborova K, Körner M, Marconato L, Weyland MS, Rohrer Bley C. Outcome and failure patterns of localized sinonasal lymphoma in cats treated with first‐line single‐modality radiation therapy: A retrospective study. Veterinary and comparative oncology. 2019 Dec;17(4):528-36. 
  • Walz JZ, Desai N, Van Asselt N, Poirier VJ, Hansen K, Selmic L. Definitive‐intent intensity‐modulated radiation therapy for treatment of canine prostatic carcinoma: a multi‐institutional retrospective study. Veterinary and Comparative Oncology. 2019 Dec 7.
  • Poirier VJ, Mayer‐Stankeová S, Buchholz J, Vail DM, Kaser Hotz B. Efficacy of Radiation Therapy for the Treatment of Sialocele in Dogs. Journal of veterinary internal medicine. 2018 Jan;32(1):107-10.
  • Richardson D, Poirier VJ, Matsuyama A, Calvalido J. Correlation between body weight and mitoxantrone-associated neutropenia in dogs. Journal of the American Animal Hospital Association. 2018 May;54(3):144-9.
  • Jafry Z, Gal A, Fleck A, Darko J, Poirier VJ. Proposed expansion margins for planning organ at risk volume for lenses during radiation therapy of the nasal cavity in dogs and cats. Veterinary Radiology & Ultrasound. 2017 Jul;58(4):471-8.



Email: vpoirier@uoguelph.ca
Phone: (226) 924-5914
Office: CS 2164

Ontario Veterinary College
University of Guelph
50 Stone Road E.,
Guelph, ON, Canada, N1G 2W1