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自死亡估计以来基于温度的时间对测量位置的敏感性
J Shanmugam Subramaniam1, M Hubig2, H Muggenthaler1
1Jena University Hospital - Friedrich Schiller University Jena, Institute of Forensic Medicine, Am Klinikum 1, 07747, Jena, Germany.
International journal of legal medicine
|June 19, 2023
概括
结肠直肠温度测量位置显著影响死亡时间 (TDE) 估计. 在直肠温度测量位置的变化可以导致TDE的2-3小时偏差,突出需要标准化的测量协议.
科学领域:
- 法医科学 法医科学 法医科学
- 生物物理学的生物物理.
- 计算生物学 计算生物学
背景情况:
- 结直肠温度测量 (RTM) 对于估计死亡时间 (TDE) 至关重要.
- 现有的TDE方法受到热和环境不确定性的影响.
- 在此之前,还没有研究过RTM位置对TDE的影响.
研究的目的:
- 调查直肠温度测量位置 (RTML) 变化对TDE的影响.
- 用有限元 (FE) 模拟来量化由于RTML变化的TDE潜在偏差.
- 分析影响TDE的其他因素,包括环境温度和模型定位.
主要方法:
- 使用有限元 (FE) 模拟体冷却.
- 采用粗的人类FE模型和CT扫描衍生的男性尸体的FE模型.
- 基于解剖学和法医考虑的模拟RTML变异.
- 分析了环境温度和土壤相互作用对身体冷却的影响.
主要成果:
- RTML的变化会导致最大的TDE偏差约为2-3小时.
- 在TDE上RTML变化的最大影响的方向一般沿着尾部到骨轴.
- 环境温度和模型在湿土上的定位也影响了TDE.
结论:
- 标准化直肠温度测量位置对于准确的TDE至关重要.
- FE模拟为了解TDE影响因素提供了有价值的工具.
- 进一步的研究应该完善RTML协议,以尽量减少TDE的不确定性.
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