Development and Validation of the 1.5-Year-Old Child Head FE Model
Cao Libo1, Huang Junkun1*, Jin Ke2
1(The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Hunan University), Changsha 410082, China) 2(Department of Radiology, Hunan Children Hospital, Changsha 410007, China)
Abstract：In this paper, a 1.5-year-old child head finite element(FE) model with detailed anatomical structure was developed through medical 3D reconstruction and FE preprocess of geometrical data were extracted from a set of MRI&CT scan images of a 1.5-year-old child. The material properties of skull and sutures reported in latest pediatric cadaver tests study were implemented into the FE model. Then the model was used to reconstruct the child head drop test(including 17 samples) conducted by Loyd. Results of simulations showed the FE model had a high biofidelity and was able to reflect the load condition of child head in real drop scenes. Maximum HIC (357) was predicted for occipital impact. Analysis of intracranial pressure predicted for different impact locations revealed that the pressure distribution was consistent with the typical pattern of coup-contrecoup injury. The model predicted higher peak coup pressure (up to 241.6 and 157.3 kPa) for vertical impact and parietal impact which leads to a higher risk of coup brain contusion. The maximum negative pressure (-74.4 kPa) was observed in occipital impact which contributes to occurrence of contrecoup brain contusion. Besides, the injury risk increases with higher drop distance.
曹立波, 黄俊锟, 金科. 1.5岁儿童头部有限元模型的建立及验证[J]. 中国生物医学工程学报, 2016, 35(4): 435-444.
Cao Libo, Huang Junkun, Jin Ke. Development and Validation of the 1.5-Year-Old Child Head FE Model. Chinese Journal of Biomedical Engineering, 2016, 35(4): 435-444.
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