Bloodstain analysis (BPA), known in the criminal justice field as blood spatter analysis, has been studied since the 1890s. Blood spatter, or constructive bloodstain readings, is a technique that seeks to reconstruct the incident that caused an individual to bleed. Understanding blood spatter on a wall or various surfaces can help determine whether a crime has been committed and whether blood found at the crime scene can be used as evidence. The first documentation of blood spatter research took place at the Institute of Forensic Medicine in Poland, by Dr. Eduard Piotrowski. During Dr. Piotrowski's period of research and documentation, where he used live rabbits to study blood spatter from head wounds, he went unnoticed in the legal profession and was overshadowed by his major work in mathematics . Dr. Piotrowski's research was first used in 1954 when a criminalist named Dr. Herbert MacDonell began training law enforcement in blood spatter analysis and developed a curriculum to continue to instruct analysts in 1971. In 1983, MacDonell founded the International Association of Bloodstain Models. Analysts (IABPA). Dr. MacDonell's extensive work in blood spatter analysis has now become a valuable asset in crime scene investigations. Blood spatters left at crime scenes can tell a trained examiner a lot about the crime that may have been committed as well as the rules that should be followed. other types of offenses. Together with other indications, blood spatter can be very helpful in reconstructing what happened, identifying the victim, and trying to identify who is responsible. The first task a medical examiner must accomplish when investigating a blood spatter...... middle of paper ...... working with the medical examiner, attorneys and blood spatter experts blood regarding the conclusions and resolution of a case. . Blood spatter analysis can not only explain what events occurred, but also in what order those events occurred, who was present or not, and even which events did not occur. Although blood spatter analysis has come a long way since its arrival in the field of criminal investigation, it is still under study and development. Blood spatter analysis will most likely always be an evolving study and will continue to be a useful tool in crime scene investigations.Work Cited Heather Brooke, Megan Baranowski, Jessica McCutcheon. Multi-mode thermal infrared imaging for chemical contrast enhancement. Part 1: Methodology, Journal Analytical Chemistry, September 23, 2010http://pubs.acs.org/doi/abs/10.1021/ac101109w?journalCode=ancham