Reverse engineering--rapid prototyping of the skull in forensic trauma analysis

Area of Science:

• Forensic Medicine
• Biomedical Engineering
• Radiology

Background:

• Forensic casework increasingly requires 3D reconstruction models for evidence presentation.
• Traditional methods like skull maceration are time-consuming and may not fully preserve detail.
• Advancements in forensic radiology provide readily available 3D data sets.

Purpose of the Study:

• To introduce and evaluate rapid prototyping (RP) as a novel method for fabricating forensic evidence models.
• To demonstrate the ethical and practical application of RP in forensic medicine.
• To showcase the utility of RP for visualizing anatomical structures and injuries in fatal trauma cases.

Main Methods:

• Utilized computed tomography (CT) scans from a fatal hammer impact case.
• Employed selective laser sintering (SLS), a rapid prototyping technique, to create a 3D skull model.
• Focused on layer-by-layer fabrication from virtual 3D data.

Main Results:

• Successfully fabricated a detailed 3D skull model using SLS.
• The model accurately represented anatomical structures and traumatic injuries.
• The process was found to be consistent with medical ethics and respectful of the deceased.

Conclusions:

• Rapid prototyping is a viable and ethical method for creating 3D forensic evidence models.
• SLS fabrication from CT data provides excellent anatomical and injury detail for courtroom presentation.
• This technique enhances haptic evidence presentation in forensic casework, respecting the deceased's dignity.