Weapon identification using antemortem computed tomography with virtual 3D and rapid prototype modeling--a report in a case of blunt force head injury.

A frequent request of a prosecutor referring to forensic autopsy is to determine the mechanism of an injury and to identify the weapons used to cause those injuries. This task could be problematic in many ways, including changes in the primary injury caused by medical intervention and the process of healing. To accomplish this task, the forensic pathologist has to gather all possible information during the post-mortem examination. The more data is collected, the easier it is to obtain an accurate answer to the prosecutor's question. The authors present a case of head injuries that the victim sustained under unknown circumstances. The patient underwent neurosurgical treatment which resulted in alteration of the bone fracture pattern. The only way to evaluate this injury was to analyze antemortem clinical data, especially CT scans, with virtual 3D reconstruction of the fractured skull. A physical model of a part of the broken skull was created with the use of 3D printing. These advanced techniques, applied for the first time in Poland for forensic purposes, allowed investigators to extract enough data to develop a hypothesis about the mechanism of injury and the weapon most likely used.

[Validity of post-mortem computed tomography angiography (PMCTA) in medico-legal diagnostic management of stab and incised wounds]. / Przydatnosc posmiertnego badania tomografii komputerowej z angiografia (PMCTA) w sadowo-lekarskiej diagnostyce przypadków ran klutych i cietych.

The report presents an analysis of results of multi-phase post-mortem computed tomography angiography (MPMCTA) scans performed at the Chair of Forensic Medicine, Jagiellonian University Medical College, in cases of stab wounds and incised wounds, as confronted with the results of conventional medico-legal autopsies. The analysis of the material points to a validity of PMCTA scans as supplementing post-mortem medico-legal examinations and being capable of providing significant data that affect final conclusions and adding new quality to recording post-mortem observations.