3차원 전산화단층촬영 영상을 이용한 안면 연조직 두께 계측의 임상적 유용성

Clinical usefulness of facial soft tissues thickness measurement using 3D computed tomographic images

  • 정호걸 (연세대학교 치과대학 구강악안면방사선과학교실.구강과학연구소) ;
  • 김기덕 (연세대학교 치과대학 구강악안면방사선과학교실.구강과학연구소) ;
  • 한승호 (가톨릭대학교 의과대학 해부학교실.가톨릭응용해부연구소) ;
  • 허경석 (연세대학교 치과대학 구강생물학교실 해부 및 발생생물학과,구강과학연구소.BK21 의과학사업단) ;
  • 이제범 ((주)맥스트론) ;
  • 박혁 (연세대학교 치과대학 구강악안면방사선과학교실.구강과학연구소) ;
  • 최성호 (연세대학교 치과대학 치주과학교실.치주조직재생연구소) ;
  • 김종관 (연세대학교 치과대학 치주과학교실.치주조직재생연구소) ;
  • 박창서 (연세대학교 치과대학 구강악안면방사선과학교실.구강과학연구소)
  • Jeong Ho-Gul (Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Kim Kee-Deog (Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Han Seung-Ho (Department of Anatomy and Catholic Institute for Applied Anatomy, College of Medicine, Catholic University of Korea) ;
  • Hu Kyung-Seok (Division in Anatomy & Developmental Biology, Department of Oral Biology, Oral Science Research Center, Brain Korea 21 Project for Medical Science, College of Dentistry, Yonsei University) ;
  • Lee Jae-Bum (Maxtron Inc) ;
  • Park Hyok (Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Choi Seong-Ho (Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Kim Chong-Kwan (Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Park Chang-Seo (Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University)
  • 발행 : 2006.06.01

초록

Purpose : To evaluate clinical usefulness of facial soft tissue thickness measurement using 3D computed tomographic images. Materials and Methods : One cadaver that had sound facial soft tissues was chosen for the study. The cadaver was scanned with a Helical CT under following scanning protocols about slice thickness and table speed; 3 mm and 3 mm/sec, 5 mm and 5 mm/sec, 7 mm and 7 mm/sec. The acquired data were reconstructed 1.5, 2.5, 3.5 mm reconstruction interval respectively and the images were transferred to a personal computer. Using a program developed to measure facial soft tissue thickness in 3D image, the facial soft tissue thickness was measured. After the ten-time repeation of the measurement for ten times, repeated measure analysis of variance (ANOVA) was adopted to compare and analyze the measurements using the three scanning protocols. Comparison according to the areas was analyzed by Mann-Whitney test. Results : There were no statistically significant intraobserver differences in the measurements of the facial soft tissue thickness using the three scanning protocols (p>0.05). There were no statistically significant differences between measurements in the 3 mm slice thickness and those in the 5 mm, 7 mm slice thickness (p>0.05). There were statistical differences in the 14 of the total 30 measured points in the 5 mm slice thickness and 22 in the 7 mm slice thickness. Conclusion : The facial soft tissue thickness measurement using 3D images of 7 mm slice thickness is acceptable clinically, but those of 5 mm slice thickness is recommended for the more accurate measurement.

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