The use of Computed Tomography (CT) Scans in the Comparison of Frontal Sinus Configurations

The observation of frontal sinus patterning is a well-established technique of personal identification in forensic anthropology and odontology. Variations in size, shape, symmetry, border outline, and the presence and number of septa and cells are compared using antemortem and postmortem radiographs. Traditionally, a standard frontal view is utilized.Computed tomography produces contiguous radiographic images of the cranium at predetermined increments. Multiple comparisons of the sinus configuration can therefore be made at different levels. A technique is presented for the production of postmortem CT scans which allows precise comparison to preexisting antemortem scans. A scoring System is described for the comparison of frontal sinuses in antemortem to postmortem CT scans. Its application to a case is discussed.