Thali Michael J, Taubenreuther Ulrike, Karolczak Marek, Braun Marcel, Brueschweiler Walter, Kalender Willi A, Dirnhofer Richard
Institute of Forensic Medicine, University of Berne, Switzerland.
J Forensic Sci. 2003 Nov;48(6):1336-42.
When a knife is stabbed in bone, it leaves an impression in the bone. The characteristics (shape, size, etc.) may indicate the type of tool used to produce the patterned injury in bone. Until now it has been impossible in forensic sciences to document such damage precisely and non-destructively. Micro-computed tomography (Micro-CT) offers an opportunity to analyze patterned injuries of tool marks made in bone. Using high-resolution Micro-CT and computer software, detailed analysis of three-dimensional (3D) architecture has recently become feasible and allows microstructural 3D bone information to be collected. With adequate viewing software, data from 2D slice of an arbitrary plane can be extracted from 3D datasets. Using such software as a "digital virtual knife," the examiner can interactively section and analyze the 3D sample. Analysis of the bone injury revealed that Micro-CT provides an opportunity to correlate a bone injury to an injury-causing instrument. Even broken knife tips can be graphically and non-destructively assigned to a suspect weapon.
当刀刺入骨头时，会在骨头上留下痕迹。这些特征（形状、大小等）可能表明用于造成骨头上图案化损伤的工具类型。到目前为止，在法医学中，精确且无损地记录此类损伤是不可能的。微计算机断层扫描（Micro-CT）为分析骨头上工具痕迹的图案化损伤提供了机会。利用高分辨率微计算机断层扫描和计算机软件，对三维（3D）结构进行详细分析最近已变得可行，并能够收集微观结构的三维骨骼信息。借助适当的查看软件，可以从三维数据集中提取任意平面的二维切片数据。使用此类软件作为“数字虚拟刀”，检查人员可以交互式地对三维样本进行切片和分析。对骨损伤的分析表明，微计算机断层扫描为将骨损伤与致伤器械关联起来提供了机会。即使是破碎的刀尖也可以通过图形方式且无损地与嫌疑武器进行匹配。
