Reflectance spectroscopy of bruises measured in time

Clinical applicability of spectroscopy combined with bruise modeling may be improved if bruises on the same anatomical position have similar values of model parameters. We first investigate if a group of bruises located on the medial arm and measured once, at variable ages of presentation, show similar spectroscopic properties as a single bruise measured in time. Second, we investigate if spectroscopic properties vary between anatomical positions on the body. We first found similar time behavior of groups of bruises measured once. Secondly, we found no spectral differences between medial and lateral arm bruises. Therefore, a single set of bruise parameters measured on an anatomical position can also be used to model bruises on different subjects but on the same anatomical position. This finding would improve clinical applicability, as it can reduce the number of required measurements.