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ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • P-ISSN2234-7550
  • E-ISSN2234-5930
  • SCOPUS, KCI, ESCI

Recording natural head position using an accelerometer and reconstruction from computed tomographic images

Journal of the Korean Association of Oral and Maxillofacial Surgeons / Journal of the Korean Association of Oral and Maxillofacial Surgeons, (P)2234-7550; (E)2234-5930
2017, v.43 no.4, pp.256-261
박일경 (원광대학교 치과대학 구강악안면외과)
이근영 (원광대학교)
정영곤 (원광대학교 치과대학 구강악안면외과)
김래형 (원광대학교)
권대근 (원광대학교 치과대학 구강악안면외과학교실)
연성희 (원광대학교 치과대학)
권경환 (원광대학교)

Abstract

Objectives: The concept of natural head position (NHP) was first introduced by Broca in 1862, and was described as a person’s stable physiologic po-sition “when a man is standing and his visual axis is horizontal.” NHP has been used routinely for clinical examination; however, a patient’s head posi-tion is random during cone-beam computed tomography (CBCT) acquisition. To solve this problem, we developed an accelerometer to record patients’ NHP and reproduce them for CBCT images. In this study, we also tested the accuracy and reproducibility of our accelerometer. Materials and Methods: A total of 15 subjects participated in this study. We invented an accelerometer that measured acceleration on three axes and that could record roll and pitch calculations. Recorded roll and pitch data for each NHP were applied to a reoriented virtual image using three-dimen-sional (3D) imaging software. The data between the 3D models and the clinical photos were statistically analyzed side by side. Paired t-tests were used to statistically analyze the measurements. Results: The average difference in the angles between the clinical photograph and the 3D model was 0.04o for roll and 0.29o for pitch. The paired t-tests for the roll data (P=0.781) and the pitch data (P=0.169) showed no significant difference between the clinical photographs and the 3D model (P>0.05).Conclusion: By overcoming the limitations of previous NHP-recording techniques, our new method can accurately record patient NHP in a time-efficient manner. Our method can also accurately transfer the NHP to a 3D virtual model.

keywords
Surgical diagnostic techniques, Cone-beam computed tomography, Three-dimensional imaging

Journal of the Korean Association of Oral and Maxillofacial Surgeons