Optical technology can give the answer to when bruising happened and how. This can be important for cases of violent crime.
In court, a bruise can sometimes be important evidence. And the age of the bruise can be instrumental if a person is to be charged for the injuries in a crime. A cross-functional research team with the Norwegian University of Scence and Technology (NTNU) is currently developing a method, based on optical technology, for dating bruises. The method will be quick and inexpensive. It does not involve incision in the body, and it would provide a reasonably accurate measurement of bruise’s age.
Today, a bruise’s age is decided by the naked eye. The method is subjective, based on the coroner’s personal knowledge and experience. It is, however, impossible to decide exactly the age of the bruise. The dating will therefore be very approximate. International research shows that coroners date approximately every second bruise incorrectly, and that the margin of error can be up to a week. The bruises are divided into three categories: The fresh that have occured in the last one to two days, bruises that are a “few days old”, and bruising that occured “several days ago”. Technology that is more accurate in determining the age of the skin bruises will in some cases be of importance to the outcome of a trial.
Lise Randeberg | alfa
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