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두개골의 3차원 영상 분석을 위한 전산화단층촬영 방법의 비교 : 상층 두께가 3차원 영상의 계측에 미치는 영향

Other Titles
 Three-dimensional image analysis of the skull using variable CT scanning protocols-effect of slice thickness on measurement in the three-dimensional CT images 
Authors
 정호걸  ;  김기덕  ;  박창서  ;  김용욱  ;  유선국  ;  김희중  ;  정해조  ;  김동욱  ;  박혁 
Citation
 Korean Journal of Oral and Maxillofacial Radiology (대한구강악안면방사선학회지), Vol.34(3) : 151-157, 2004 
Journal Title
 Korean Journal of Oral and Maxillofacial Radiology (대한구강악안면방사선학회지) 
ISSN
 1229-8212 
Issue Date
2004
Keywords
Imaging, Three-Dimensional ; Tomography, X-Ray Computed ; Image Analysis ; Cephalometry
Abstract
Purpose : To evaluate the quantitative accuracy of three-dimensional (3D) images by means of comparing distance measurements on the 3D images with direct measurements of dry human skull according to slice thickness and scanning modes. Materials and Mathods : An observer directly measured the distance of 21 line items between 12 orthodontic landmarks on the skull surface using a digital vernier caliper and each was repeated five times. The dry human skull was scanned with a Helical CT with various slice thickness (3, 5, 7 mm) and acquisition modes (Conventional and Helical). The same observer measured corresponding distance of the same items on reconstructed 3D images with the internal program of V-works 4.0/supTM</SUP>(Cybermed Inc., Seoul, Korea). The quantitative accuracy of distance measurements were statistically evaluated with Wilcoxons' two-sample test. Results: 11 line items in Conventional 3 mm, 8 in Helical 3mm, 11 in Conventional 5mm, 10 in Helical 5mm, 5 in Conventional 7mm and 9 in Helical 7mm showed no statistically significant difference. Average difference between direct measurements and measurements on 3D CT images was within 2mm in 19 line items of Conventional 3mm, 20 of Helical 3mm, 15 of Conventional 5mm, 18 of Helical 5mm, II of Conventional 7mm and 16 of Helical 7mm. Conclusion: Considering image quality and patient's exposure time, scanning protocol of Helical 5mm is recommended for 3D image analysis of the skull in CT.
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Radiology (영상치의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kee Deog(김기덕) ORCID logo https://orcid.org/0000-0003-3055-5130
Kim, Yong Oock(김용욱) ORCID logo https://orcid.org/0000-0002-3756-4809
Kim, Hee Joung(김희중)
Park, Chang Seo(박창서)
Park, Hyuk(박혁)
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
Jeong, Hai Jo(정해조)
Jeong, Ho Gul(정호걸)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/111926
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