Single energy quantitative computed tomography (SEQCT) is useful in evaluating vertebral bone mineral content (BMC), and it can segregate cortical bone and trabecular bone in vertebral bodies.
BMC in the mandible was investigated by SEQCT. The accuracy and reproducibility of this method were examined using the mandible. W e propose using an indefinite region of interest (ROI) when measuring BMC in the mandible and evaluating the replication of results.
Test results demonstrated good correlation between the BMC and the CaCO3 density of the phantom rods as well as good replication. The results of clinical tests demonstrated good replication using the indefinite ROI in the mandible and that repositioning error was slight.
In conclusion, with the single energy technique, accurate quantitative measurement of BMC was possible.
