High-Speed Biplane X-Ray Head Impact Experiments in the Göttingen Minipig

Authors: Elizabeth McNeil, Amy Hermundstad, Pamela VandeVord, and Warren Hardy—Department of Biomedical Engineering and Mechanics, Virginia Tech

Abstract

Traumatic brain injury is a persistent problem in the United States. To develop a head injury metric that relates underlying damage found in vivo to impact kinematics, scaling from the minipig to a human is required. The methods and results presented here describe the high-speed biplane x-ray experiments that will be used for finite element model development. Göttingen minipigs underwent surgery to implant radiopaque markers into the brain, and to attach markers to the skull. During the nonpenetrating, impact induced injury, a high-speed biplane x-ray system and a visible light camera captured the event. Relative brain/skull motion displayed similar figure-eight/looping patterns as during cadaver testing, similarities between live and recently deceased impacts, and that a higher input leads to larger brain motion, but similar motion patterns. Data from these tests will be used to validate a minipig finite element model.

Type: Short Communication

© Stapp Association, 2018

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