Abstract：Objective To verify the reliability, repeatability and accuracy of 128-slice spiral CT through comparing the measurement results of 128-slice spiral CT of 20 normal chin models with those of traditional manual measurement results. Methods The volume scanning with its data collection of normal chin models were conducted with 128-slice spiral CT. Then the images whose slice thicknesses were 0.6 mm were obtained through function reconstruction and then were transferred to various softwares including the 3D workstation, Dental and Inspace. The related indicators including the teeth width, dental arch length and dental arch width of maxillary and mandibular teeth were measured with axial images, MPR (Multiplanar Reconstruction), CPR (Curve Planar Reconstruction) and VR (Volume Reconstruction) while these indicators were also measured with vernier caliper manually. The measurement data collected from those two methods were analyzed and compared. Results The parallel validity of manual measurement was similar to CT measurement whose measurement error was -0.02～0.02 mm. Conclusion 128-slice spiral CT can meet the clinical orthodontic requirements.
常捷，李武，滕永健，赵晶帆. 128层螺旋CT在正常模型测量中的可靠性研究[J]. 中国医疗设备, 2014, 29(6): 173-175.
CHANG Jie, LI Wu, TENG Yong-jian, ZHAO Jing-fan. Contrastive Research on the Reliability of 128-Slice Spiral CT in the Measurement of Normal Occlusion Model. China Medical Devices, 2014, 29(6): 173-175.
