AI Article Synopsis
- The size, volume, and impact velocity of bloodstains at crime scenes can provide vital clues for forensic investigators to reconstruct bloodletting events.
- Optical coherence tomography was effective in measuring blood volumes on both smooth and irregular surfaces, with high accuracy on glass but increased deviation on irregular surfaces.
- The study found that the volume ratio of dried to fresh bloodstains ranged from 19% to 28%, influenced by individual donor characteristics and anticoagulant use, making this method valuable for forensic analysis.
Article Abstract
The volume of bloodstains found on crime scenes may help forensic investigators reconstruct the location and kinematics of bloodletting events, as stain size, volume, and impact velocity are related. Optical coherence tomography was used as a method to determine the volume and volume ratio of dried and fresh bloodstains on both glass and irregular surfaces or deposited with an impact velocity. The volume of blood drops deposited on smooth glass surfaces was measured within a deviation of 2%. This deviation increased for droplets on irregular surfaces or deposited with an impact velocity. The volume ratio of dried and fresh bloodstains was equal to 19-28% depending on the individual donor and on the use of an anticoagulant. Optical coherence tomography is a good method to determine the volume of fresh and dried bloodstains in laboratory conditions and allows accurate determination of the dry/fresh ratio.
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| http://dx.doi.org/10.1111/1556-4029.12272 | DOI Listing |
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