The possibility and limitation of postmortem computed radiographic analysis of drug intoxication, cervical spine injury, and buthtub death.

2018 Fiscal Year Annual Research Report

• Project/Area Number: 16K09198
• Research Institution: Tohoku University
• Principal Investigator: 臼井 章仁 東北大学, 医学系研究科, 助教 (90588394)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 死亡時画像診断 / 薬物中毒 / 頚椎損傷

Outline of Annual Research Achievements

自殺を企図した経口的な薬物摂取の症例に関して、死後CT画像上において、薬物摂取を示すCT画像所見（胃・十二指腸内のX線高吸収物）が出現する頻度（87%）、摂取した薬物の種類と血中濃度、そして遺体発見現場における捜査情報との関連など、研究結果を英語論文誌に掲載した。対象が身元不明の死体であることも少なくない法医解剖症例について、死者の生前における医学情報は、質・量ともに事前に得られることが限られる。死後CTにより、解剖前に薬物摂取の可能性が示唆できることは、解剖者・司法関係者にとって有用な情報である。
死体における頚椎損傷に関して、致死的損傷である頚髄損傷、すなわち頚髄内の微小な出血を、死後CT画像上で直接検出することは非常に困難である。そこで、直接的なCT画像所見ではなく、頚椎・頚髄損傷を示し得る間接的な所見、例えば、頚椎周囲の軟部組織の腫脹、頚椎アライメントの乱れ、椎体間の離開損傷を示す椎間板内ガスの存在などによる多断面再構成画像を使用した診断率について、論文を投稿中である。
風呂溺については、解析できる症例数を蓄積中できなかった。

Research Products

• [Journal Article] A quantitative morphological analysis of three-dimensional CT coxal bone images of contemporary Japanese using homologous models for sex and age estimation (2019)
  • Author(s): Biwasaka Hitoshi、Aoki Yasuhiro、Takahashi Yusuke、Fukuta Mamiko、Usui Akihito、Hosokai Yoshiyuki、Saito Haruo、Funayama Masato、Fujita Sachiko、Takamiya Masataka、Dewa Koji
  • Journal Title: Legal Medicine Volume: 36 Pages: 1～8
  • DOI: 10.1016/j.legalmed.2018.09.017
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Post-mortem computed tomography of cervical intervertebral separation: Retrospective review and comparison of the autopsy results of 57 separations (2018)
  • Author(s): Kudo Seina、Kawasumi Yusuke、Usui Akihito、Arakawa Makoto、Yamagishi Naoto、Igari Yui、Funayama Masato、Ishibashi Tadashi
  • Journal Title: Journal of Forensic Radiology and Imaging Volume: 12 Pages: 57～63
  • DOI: 10.1016/j.jofri.2018.02.007
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unexpected Death in a Child with a Giant Adrenal Ganglioneuroblastoma (2018)
  • Author(s): Takahashi Shirushi, Funayama Masato, Usui Akihito, Kawasumi Yusuke, Guan Xueting, Igari Yui, Ohuchi Tsukasa, Hayashizaki Yoshie, Usui Kiyotaka
  • Journal Title: 法医学の実際と研究 Volume: 61 Pages: 195-199
  • Peer Reviewed
• [Journal Article] Postmortem Multi-slice Computed Tomography Can Be an Effective Tool in Identifying Airway Obstruction by Food (2018)
  • Author(s): Usui Akihito, Takahashi Shirushi, Kawasumi Yusuke, Sato Ryotaro, Igari Yui, Guan Xueting, Ohuchi Tsukasa, Usui Kiyotaka, Hayashizaki Yoshie, Saito Haruo, Funayama Masato
  • Journal Title: 法医学の実際と研究 Volume: 61 Pages: 185-193
  • Peer Reviewed
• [Presentation] Relationship between neuroblastoma and unexpected infant death (2018)
  • Author(s): Funayama Masato, Takahashi Shirushi, Usui Akihito, Kawasumi Yusuke, Igari Yui, Guan Xueting, Ohuchi Tsukasa, Usui Kiyotaka
  • Organizer: The 24th Congress of the International Academy of Legal Medicine
  • Int'l Joint Research
• [Presentation] Postmortem multislice computed tomography is expected to be an effective tool for airway obstruction by food (2018)
  • Author(s): Funayama Masato, Usui Akihito, Takahashi Shirushi, Kawasumi Yusuke, Igari Yui, Guan Xueting, Ohuchi Tsukasa, Usui Kiyotaka
  • Organizer: The 24th Congress of the International Academy of Legal Medicine
  • Int'l Joint Research
• [Presentation] Three-dimensional analysis of CT pelvic images using principle component analysis (2018)
  • Author(s): Biwasaka Hitoshi, Aoki Yasuhiro, Fukuta Mamiko, Fujita Sachiko, Takamiya Masataka, Dewa Koji, Usui Akihito, Saito Haruo, Funayama Masato, Sugiyama Kazuhiro
  • Organizer: The 24th Congress of the International Academy of Legal Medicine
  • Int'l Joint Research
• [Presentation] Sex determination using Fourier analysis of postmortem computed tomography images of the skull (2018)
  • Author(s): Hayashizaki Yoshie, Usui Akihito, Takada Aya, Saito Kazuyuki, Yoneyama Katsumi, Hara Masaaki, Nakanishi Hiroaki, Igari Yui, Funayama Masato
  • Organizer: The 24th Congress of the International Academy of Legal Medicine
  • Int'l Joint Research