Study on Brain Injury Mechanism during rotational impact by using a Real-Shaped Physical Model of a Human Head

2010 Fiscal Year Final Research Report

• Project/Area Number: 21760071
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Kanazawa University
• Principal Investigator: MIYAZAKI Yusuke Kanazawa University, 機械工学系, 助教 (70432135)
• Project Period (FY): 2009 – 2010
• Keywords: 生体力学 / 傷害予防

Research Abstract

The purposes of this study were to construct a head physical model having a real human shape by using CAD/CAM technologies, and measure shear strain distribution and propagation in the brain model under rotational impact. A 3D head physical model was constructed from CT and MR images of a subject. The model consists of a skull, falx, cerebrospinal fluid (CSF) and brain. Full-field deformation behavior on the coronal plane of the brain was measured by using digital image correlation (DIC). As the results, shear strain at corpus callosum, surrounded ventricles and longitudinal fissure of cerebrum, showed biggest value. The results correspond to the characteristics of occurrence of diffused axonal injury. Therefore, complex shape of brain and the relative motion between the skull and brain affect on the mechanism of traumatic brain injury.

Research Products

• [Journal Article] 頭部回転挙動と脳せん断ひずみの関係 (2010)
  • Author(s): 穴田賢二, 宮崎祐介, 西貴士, 立矢宏, 放生明廣, 阪本雄一郎
  • Journal Title: 日本機械学会論文集 76 Pages: 1816-1822
  • Peer Reviewed
• [Journal Article] 脳外傷発生メカニズム解明のための実形状頭部物理モデルの構築と脳部変形計測 (2010)
  • Author(s): 穴田賢二, 宮崎祐介, 西貴士, 立矢宏, 放生明廣, 阪本雄一郎
  • Journal Title: 日本機械学会論文集 76 Pages: 107-114
  • Peer Reviewed
• [Presentation] 三次元実形状頭部物理モデルの変形計測 (2011)
  • Author(s): 西貴士, 宮崎祐介, 穴田賢二, 立矢宏, 放生明廣, 阪本雄一郎
  • Organizer: 日本機械学会第23回バイオエンジニアリング講演会
  • Place of Presentation: 熊本大学(熊本県)
  • Year and Date: 2011-01-08
• [Presentation] 脳ひずみ分布に対する形状因子の影響 (2010)
  • Author(s): 丹治和也, 宮崎祐介, 穴田賢二, 立矢宏, 放生明廣, 阪本雄一郎
  • Organizer: 日本機械学会シンポジウム:スポーツ・アンド・ヒューマン・ダイナミクス2010
  • Place of Presentation: 東京工業大学(東京都)
  • Year and Date: 2010-11-04
• [Presentation] 頭蓋回転運動と脳変形挙動の関係 -実形状物理モデルによる実験的研究- (2010)
  • Author(s): 宮崎祐介, 穴田賢二, 丹治和也, 立矢宏, 放生明廣, 阪本雄一郎
  • Organizer: 日本機械学会2010年度年次大会
  • Place of Presentation: 名古屋工業大学(愛知県)
  • Year and Date: 2010-09-06
• [Presentation] Measurement ofShear Strain Distribution and Propagation in Real Shaped Brain Physical Model under RotationalImpact (2010)
  • Author(s): Miyazaki Y., Anata K., Tachiya H.,Hojo A., Sakamoto Y.
  • Organizer: 6th World Congress of Biomechanics
  • Place of Presentation: Suntec Convention Centre(シンガポール)
  • Year and Date: 2010-08-04
• [Presentation] 回転衝撃時における実形状頭部物理モデルの脳部せん断ひずみ (2009)
  • Author(s): 西貴士、宮崎祐介、穴田賢二、立矢宏、放生明廣、阪本雄一郎
  • Organizer: 日本機械学会ジョイント・シンポジウム2009:スポーツ工学シンポジウム/シンポジウム:ヒューマンダイナミクス
  • Place of Presentation: 福岡工業大学(福岡県)
  • Year and Date: 2009-11-05
• [Presentation] 回転衝撃時における実形状頭部物理モデルの脳部せん断ひずみ (2009)
  • Author(s): 宮崎祐介、穴田賢二、西貴士、立矢宏、放生明廣、阪本雄一郎
  • Organizer: 自動車技術会2009年秋季大会
  • Place of Presentation: 仙台国際センター(宮城県)
  • Year and Date: 2009-10-08
• [Presentation] Deformation Measurement of brain part in headphysical model during rotationalimpact (2009)
  • Author(s): Anata K.,Miyazaki Y., Tachiya H., HojoA., Sakamoto Y.
  • Organizer: 4th Asian Pacific conferenceon Biomechanics
  • Place of Presentation: クライストチャーチ,ニュージーランド
  • Year and Date: 2009-04-16