Andrew G. Parrent, MD, FRCSC

parrentAssociate Professor of Neurosurgery, Western University
Office: London Health Sciences Centre, University Hospital B10-134
Phone: 519-663-3707
Secretary: Waheeda Abrahim


Bio Sketch

Dr. Parrent received his B.Sc from Brock University in St. Catharines and his MD from the University of Toronto in 1983. He completed a neurosurgery residency at Dalhousie University in Halifax and a two-year fellowship in Sterotaxic/Functional Neurosurgery at The Toronto Hospital.

Dr. Parrent is Assistant Professor of Neurosurgery at Western University and Associate Scientist at Robart's Research Institute in London. He is conducting research in collaboration with Terri Peters of the Robart's Institute to establish a computer based image guided surgical planning system for neurosurgical procedures. He has also developed an interactive video CD for teaching surgical techniques to residents.

Dr. Parrent has contributed to many medical textbooks and has been published in numerous journals including the New England Journal of Medicine and Canadian Journal of Neurological Sciences.



Dr. Parrent's research focuses on minimally invasive techniques for the surgical treatment of epilepsy. He has published research on sterotactic surgery techniques for the treatment of temporal lobe epilepsy. He is undergoing research in brain stimulation on the temporal lobe for the purpose of treating temporal lobe seizures with electrical simulation rather than with surgical procedures. His clinical research focuses on endoscopic surgery and image-guided surgery.

Medical Interests

Cerebral Endoscopic Surgery, Chronic Pain Surgery, Epilepsy Surgery, Movement Disorder Surgery, Parkinson's Disease Surgery

Honours and Awards



PubMed Publications Listing


Lau JC, MacDougall KW, Arango MF, Peters TM, Parrent AG, Khan AR. Ultra-High Field Template-Assisted Target Selection for Deep Brain Stimulation Surgery. World Neurosurg. 2017 Jul;103:531-537. doi: 10.1016/j.wneu.2017.04.043. Epub 2017 Apr 17. PubMed PMID: 28427973.

Levine AB, Steven DA, Parrent AG, MacDougall KW. Successful Long-term Nerve Root Stimulation for Chronic Neuropathic Pain: A Real World, Single Center Canadian Experience. Pain Physician. 2017 Feb;20(2):95-106. PubMed PMID: 28158157.

Lau JC, Khan AR, Zeng TY, MacDougall KW, Parrent AG, Peters TM. Quantification of local geometric distortion in structural magnetic resonance images: Application to ultra-high fields. Neuroimage. 2017 Jan 6. pii: S1053-8119(16)30791-1. doi: 10.1016/j.neuroimage.2016.12.066. [Epub ahead of print] PubMed PMID: 28069539.

Gilmore G, Lee DH, Parrent A, Jog M. The current state of postoperative imaging in the presence of deep brain stimulation electrodes. Mov Disord. 2017 Jun;32(6):833-838. doi: 10.1002/mds.27028. Epub 2017 May 15. No abstract available. PMID: 2850442


Social Media Coverage