A bridging method between 2D and 3D cephalometry using computed tomography synthesized cephalograms

Jing Jing Fang, Jia Kuang Liu, Chia Wei Chang, Yu Cheng Lin

研究成果: Conference contribution

摘要

Traditional cephalograms are X-ray films, which provide either frontal or lateral overlapped perspective medical imaging. Although computed tomography imaging provides more information in 3-dimensional anatomy, the landmarks for cephalometry are located in space which does not carry normal standards in 3-D cephalometry. The CT natural imaging method is different from X-ray in that they respectively use orthogonal and perspective projections. Thus, we cannot apply the statistical normal values gathered from traditional 2D cephometry to 3D cephalometry. This study makes use of calibrated synthesized cephalograms from computed tomography to construct a cephalometry bridge between 2-D and 3-D. In this thesis, we first review the imaging model of a specific X-ray machine (Asahi OrthoStage AUTO IIIN) by a camera calibration method. We then construct a reference system for a virtual head, and synthesize calibrated X-ray cephalograms using the volume rendering algorithm. System accuracy for the synthesis X-ray cephalograms is verified through an interactive corresponding landmark system between 2-D and 3-D. An experimental clinician was invited to manually place 17 landmarks on the X-rays and their corresponding, shuffled in random order. The systematic error, average error, and standard deviation of landmark positions are 0.15 mm, 0.97 mm, and 0.45 mm, respectively. The interactive system bridges the transformation from orthogonal 3-D to perspective 2-D cephalometry.

原文English
主出版物標題Innovation for Applied Science and Technology
頁面1589-1595
頁數7
DOIs
出版狀態Published - 2013 二月 20
事件2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012 - Kaohsiung, Taiwan
持續時間: 2012 十一月 22012 十一月 6

出版系列

名字Applied Mechanics and Materials
284-287
ISSN(列印)1660-9336
ISSN(電子)1662-7482

Other

Other2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012
國家Taiwan
城市Kaohsiung
期間12-11-0212-11-06

    指紋

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此

Fang, J. J., Liu, J. K., Chang, C. W., & Lin, Y. C. (2013). A bridging method between 2D and 3D cephalometry using computed tomography synthesized cephalograms. 於 Innovation for Applied Science and Technology (頁 1589-1595). (Applied Mechanics and Materials; 卷 284-287). https://doi.org/10.4028/www.scientific.net/AMM.284-287.1589