期刊
JOURNAL OF FORENSIC SCIENCES
卷 59, 期 1, 页码 34-41出版社
WILEY-BLACKWELL
DOI: 10.1111/1556-4029.12272
关键词
forensic science; bloodstain pattern analysis; blood drop; volume; optical coherence tomography; dry/fresh ratio
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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