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[The accuracy of 3D-CT volume rendering for craniofacial linear measurements]
Dong-Xu Liu1, Chun-Ling Wang, Li Liu
1Department of Orthodontics, School of Stomatology, Shandong University, Jinan 250012, China. liudongxu@sdu.edu.cn
Purpose:
This study was designed to determine the consistency of craniofacial measurements using spiral computed tomography volume rendering by computer systems and sliding caliper.
Methods:
The study population consisted of 12 cadaver heads which were examined with spiral CT. The archived CT data were transferred to a workstation, and 3D-CT volume rendered images were generated using computer graphics tools. Linear measurements (n = 20), based upon conventional craniometric anatomical landmarks (n = 16) were made, by Display Tools and sliding caliper respectively. The consistency between the two measurements was analyzed by paired t test using SAS9.0 software package.
Results:
The results demonstrated no statistically significant difference between imaging measurement and physical measurement, P > 0.05.
Conclusions:
There is significant consistency between spiral CT measurement and physical measurement for craniofacial linear distance. 3D-CT volume rendering images using craniometric measurements can be used for clinical and basic studies in stomatology.
