Density estimation based on the Hounsfield unit value of cone beam computed tomography imaging of the jawbone system

• 發表在: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
• 主要作者: 2-s2.0-85058694413
• 格式: Article
• 語言: English
• 出版: SAGE Publications Ltd 2018
• 在線閱讀: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058694413&doi=10.1177%2f0954411918806333&partnerID=40&md5=f98a8abf14363926d2d268eff7369e7c
• ISSN: 9544119
• DOI: 10.1177/0954411918806333

The aim of this study is to investigate the estimation of density from the Hounsfield unit of cone beam computed tomography data in dental imaging, especially for dental implant application. A jaw phantom with various known densities of anatomical parts (e.g. soft tissue, cortical bone, trabecular bone, tooth enamel, tooth dentin, sinus cavity, spinal cord and spinal disc) has been used to test the accuracy of the Hounsfield unit of cone beam computed tomography in estimating the mechanical density (true density). The Hounsfield unit of cone beam computed tomography data was evaluated via the MIMICS software using both two-dimensional and three-dimensional methods, and the results showed correlation with the true density of the object. In addition, the results revealed that the Hounsfield unit of cone beam computed tomography and bone density had a logarithmic relation, rather than a linear one. To this end, the correlation coefficient of logarithmic correlation (R 2 = 0.95) is higher than the linear one (R 2 = 0.77). © IMechE 2018.