法医学杂志

法医学杂志 ›› 2012, Vol. 28 ›› Issue (2): 89-91.DOI: 10.3969/j.issn.1004-5619.2012.02.003

• 论著 • 上一篇    下一篇

超声法测量角膜厚度推断死亡时间

吕国丽1，姜富学1，许心舒1，蒋拥军2，李志刚1，王  欣1，石  河1，余礼聪1，许传超3   

  1. （1. 广州市刑事科学技术研究所，广东 广州 510030； 2. 广州市公安局南沙区分局，广东 广州 510140； 3. 广东医学院，广东 东莞 523808）
  • 发布日期:2012-04-25 出版日期:2012-04-28
  • 通讯作者: 通信作者：许传超，男，博士，主要从事法医物证学研究；E-mail：xcchao5855@sina.com
  • 作者简介:吕国丽（1972—），女，河南南阳人，副主任法医师，主要从事法医病理学研究；E-mail：guolil@sina.com
  • 基金资助:

    广东省科技计划项目（2011B080701097）

Estimation of Postmortem Interval by Detecting Thickness of Cornea Using Ultrasonic Method

LÜ GUO-LI1, JIANG FU-XUE1, XU XIN-SHU1, JIANG YONG-JUN2, LI ZHI-GANG1, WANG XIN1, SHI HE1, YU LI-CONG1, XU CHUAN-CHAO3   

  1. （1. Guangzhou Institute of Criminal Science and Technology, Guangzhou 510030, China; 2. Nansha Branch of Guangzhou Public Security Bureau, Guangdong 510140, China; 3. Guangdong Medical College, Dongguan 523808, China）
  • Online:2012-04-25 Published:2012-04-28

被引次数

3

摘要： 目的 用超声法测量角膜厚度，探索其死后变化规律。 方法 11只家兔随机分为两组，分别为角膜上皮完整组及去角膜上皮组。后者采用机械刮除法去除角膜上皮。利用超声测厚仪连续监测两组动物的死后多个时间点的角膜厚度，并对角膜厚度变化与死亡时间进行相关回归分析。 结果 超声法测量角膜上皮完整组死后兔角膜厚度的变化值与死亡时间呈非线性相关，且具有较强的相关性，相关系数为0.922，而去角膜上皮组的相关系数为0.822。 结论 超声法测量角膜厚度对推断早期死亡时间具有较可靠的应用前景。完整的角膜上皮对于超声测量角膜厚度具有关键作用。

关键词: 法医病理学, 超声检查, 角膜, 死亡时间, 兔

Abstract: Objective To explore the postmortem changes of cornea thickness measured by ultrasonic pachymetry. Methods Eleven rabbits were randomly divided into two groups： one group with intact corneal epithelium and another group without intact corneal epithelium. In the later group, the corneal epithelium of the rabbit was scraped using mechanical elimination method. The corneal thickness was monitored continuously by ultrasonic pachymetry at several postmortem interval points in rabbits of the two groups. The changes of corneal thickness and postmortem interval were explored by relative regression analysis. Results The thickness of the cornea showed a strong non-linear correlation with the postmortem interval in the group with intact corneal epithelium. The group with intact corneal epithelium showed the correlation coefficient 0.922 and the group without intact corneal epithelium showed the correlation coefficient 0.822, respectively. Conclusion The corneal thickness measured by ultrasonic pachymetry shows a potential value for estimating early postmortem interval. The intact corneal epithelium is a crucial factor for the measurement of cornea thickness by ultrasonic pachymetry.

Key words: forensic pathology, ultrasonography, cornea, postmortem interval, rabbits

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