Study of the Mechanism of Cerebral Contusion Based on the Real-World Brain Injury Accidents

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概要

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• In this study, the mechanism of cerebral contusion was investigated using finite element analysis. A finite element human head model was constructed and used to simulate of 9 real-world fatal cerebral contusion accident cases. In these simulations, the impact velocities of the impact objects were estimated on the basis of the available information such as the regions of skull fracture and cerebral contusion. The pressure fluctuations inside the skull and the input force durations in each case were obtained using these simulations. These results show that in case of coup contusion, a negative pressure occurs on the impact side and is directly correlated with short force durations. In contrast, in case of contrecoup contusion, negative pressure occurs on the opposite side of impact and is directly correlated with long force durations. As the result, coup contusions are caused when the input force durations are short, contrecoup contusions are caused when the input force durations are long.

著者

• Aomura Shigeru

  Graduate School Of Engineering Hokkaido University

• NAKADATE Hiromichi

  Graduate School of System Design, Tokyo Metropolitan University

• AOMURA Shigeru

  Graduate School of System Design, Tokyo Metropolitan University

• ZHANG Yuelin

  Graduate School of System Design, Tokyo Metropolitan University

• FUJIWARA Satoshi

  Forensic Science and Pathophysiology Graduate School of Medicine, Yokohama City University

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