Comparison of scientific calipers and computer-enabled CT review for the measurement of skull base and craniomaxillofacial dimensions

Traditionally, cadaveric studies and plain-film cephalometrics provided inf ormation about craniomaxillofacial proportions and measurements; however, a dvances in computer technology now permit software-based review of computed tomography (CT)-based models. Distances between standardized anatomic poin ts were measured on five dried human skulls with standard scientific calipe rs (Geneva Gauge, Albany, NY) and through computer workstation (StealthStat ion 2.6.4, Medtronic Surgical Navigation Technology, Louisville, CO) review of corresponding CT scans. Differences in measurements between the caliper and CT model were not statistically significant for each parameter. Measur ements obtained by computer workstation CT review of the cranial skull base are an accurate representation of actual bony anatomy. Such information ha s important implications for surgical planning and clinical research.