SUNY Downstate Health Sciences University 1 article published in JoVE Bioengineering A MRI-Based Toolbox for Neurosurgical Planning in Nonhuman Primates William K.S. Ojemann1,2, Devon J. Griggs2,3, Zachary Ip1,2, Olivya Caballero4, Hesamoddin Jahanian5, Susana Martinez-Conde4, Stephen Macknik4, Azadeh Yazdan-Shahmorad1,2,3 1Bioengineering Department, University of Washington, 2Washington National Primate Research Center, University of Washington, 3Electrical and Computer Engineering Department, University of Washington, 4Department of Ophthalmology, SUNY Downstate Health Sciences University, 5Radiology Department, University of Washington The method outlined below aims to provide a comprehensive protocol for the preparation of nonhuman primate (NHP) neurosurgery using a novel combination of three-dimensional (3D) printing methods and MRI data extraction.