Öğünç Gökhan İbrahim, Özer Mustafa Tahir, Uzar Ali İhsan, Eryılmaz Mehmet, Mercan Mustafa
Gendarmerie and Coast Guard Academy, Institute of Security Sciences, Ankara-Turkey.
Department of General Surgery, Gülhane Training and Research Hospital, Ankara-Turkey.
Ulus Travma Acil Cerrahi Derg. 2020 Nov;26(6):911-919. doi: 10.14744/tjtes.2020.76960.
In this study, a 35 years old man was killed with the ricocheted shotgun pellets wounds from the asphalt road surface. The Public Prosecutor to define the ricochet point requested the ricocheted pellet pattern examination in two different ricochet distances.
The ten ricochet tests were performed for at 2 meters (point A) and 1 meter (point B) from the target, and the pellet distribution and pattern area were calculated using the gauss method. Then, the test and autopsy results were compared in the pellet number, calculated pellet pattern area and ricocheted angle. Furthermore, the similarity of the pellet number and the pellet pattern areas were examined using the two-tailed Mann-Whitney U test.
In this study, 81 pellets recovered from the victim's body and the distribution pattern of pellets area was 2134 cm2. At the ricochet point A, the average number of pellets on the target was 82.1 and the distribution pattern of pellets area was 2700 cm2. At the ricochet point B, the average number of pellets on the target was 132.6 and the distribution pattern of pellets area was 4928 cm2. According to the two-tailed Mann-Whitney U test, there was low-level similarity (p<0.05 level Sig. 0.023; z=-2.424) on the pellet pattern area between autopsy and the ricochet point A. However, as regards the pellet number on the target, there was a similarity (p<0.05 level Sig. 0.481; z=-0.808) between autopsy and the ricochet point A.
Test results showed that the pellet ricochet occurred two meters from the victim.
在本研究中，一名35岁男子死于沥青路面反弹的猎枪霰弹伤。检察官为确定反弹点，要求在两个不同的反弹距离进行霰弹反弹模式检查。
在距目标2米（A点）和1米（B点）处进行了10次反弹测试，使用高斯方法计算霰弹分布和模式面积。然后，在霰弹数量、计算出的霰弹模式面积和反弹角度方面比较测试结果与尸检结果。此外，使用双尾曼-惠特尼U检验检查霰弹数量和霰弹模式面积的相似性。
在本研究中，从受害者尸体上回收了81枚霰弹，霰弹面积的分布模式为2134平方厘米。在反弹点A，目标上霰弹的平均数量为82.1，霰弹面积的分布模式为2700平方厘米。在反弹点B，目标上霰弹的平均数量为132.6，霰弹面积的分布模式为4928平方厘米。根据双尾曼-惠特尼U检验，尸检与反弹点A之间在霰弹模式面积上存在低水平相似性（p<0.05水平，显著性0.023；z=-2.424）。然而，关于目标上的霰弹数量，尸检与反弹点A之间存在相似性（p<0.05水平，显著性0.481；z=-0.808）。
测试结果表明，霰弹在距受害者两米处发生反弹。
