Ballistic research techniques: visualizing gunshot wounding patterns

Area of Science:

• Forensic Science
• Biomedical Engineering
• Ballistics

Background:

• Mapping gunshot wound (GSW) patterns in opaque models presents significant challenges.
• Various imaging and analysis techniques exist, but their effectiveness in complex biological structures requires validation.

Purpose of the Study:

• To evaluate and compare the efficacy of different techniques for visualizing and analyzing gunshot wound (GSW) patterns within a cadaveric animal limb model.
• To determine the optimal method for precise GSW damage assessment.

Main Methods:

• Utilized fallow deer hind limbs as a cadaveric model.
• Tested four techniques: flash X-ray, ultrasound, physical dissection, and computed tomography (CT) with contrast.
• Fired 7.62 × 39 mm ammunition at muzzle velocity into each limb.

Main Results:

• Flash X-ray indicated projectile yaw.
• Ultrasound visualized GSW tracks but was deemed too subjective.
• Physical dissection proved unreliable due to the cadaveric nature of the tissue.
• CT with contrast provided superior multi-planar imaging and 3D reconstruction for versatile damage measurement.

Conclusions:

• Computed tomography (CT) with contrast emerged as the most effective technique for precise gunshot wound (GSW) pattern analysis in this cadaveric model.
• Findings support the utility of CT in ballistic research for both clinical and forensic applications.