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두개 안면 골 컴퓨터 단층 촬영 위치의 중요성

Other Titles
 The Significance of the Position of the Craniofacial Computed Tomographic Scanning 
 김용욱  ;  김영석  ;  박병윤  ;  김기덕  ;  이혜연  ;  유선국 
 Journal of the Korean Society of Plastic and Reconstructive Surgery (대한성형외과학회지), Vol.31(4) : 439-445, 2004 
Journal Title
Journal of the Korean Society of Plastic and Reconstructive Surgery(대한성형외과학회지)
Issue Date
The computer imaging process is becoming a popular procedure in the research of the craniofacial skeleton. In acquisition of the digital data of computer tomography (CT), the position of the head is likely to vary each time. The difference in head position results in different orientations on actual images, which in turn may result in misinterpretation of the image. The purpose of this study is to point out the importance of position alignment between CT databases before pursuing research by comparing the images of different position alignment. To show the significance of the alignment of CT scan, eleven target points were selected from CT scan and the coordinates were obtained from the different position of the aligned CT scan by the nasion, basion, and bilateral external auditory meatus. The target points were divided into three groups-the central points, the lateral points, and the mid points groups, depending on their positional configuration from the mid- sagittal plane. The alignment of CT scan was processed by volume rendering method and the coordinates of target points were taken from the three dimensional images with different position. The aligned CT images rotated by 10 degrees with respect to the X-axis, the (X- and Y-axes), and the (X-, Y-, and Z axes), respectively. Eleven target points were measured from these rotated images one per day, for 10 days, by a plastic surgeon. The mean coordinates from the 10 trials were defined as the gold standard values for the other 10 times measurement. The measurement error(ME) of the central points group was lower than that of the mid points group, and the ME of the mid points group was lower than that of the lateral points group. The ME increased as the distance from the center to target point increased. However the ME of aligned CT images was the lowest of all the rotated cases. For the mean ME of the 11 points, aligned image, the X-axis(X- and Y-axes), and (X-, Y-, and Z-axes) rotation were 0.97, 1.53, 1.62 and 1.77 mm, respectively. Among three rotated cases, ME of the(X-, Y-, and Z-axes) rotation had the highest one. Above results mean that the chance of incorrectly localizing the target points could be significantly reduced if the skull CT images were aligned, in the research of the measurement of craniofacial skeleton from CT scan.
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 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
Yonsei Authors
Kim, Kee Deog(김기덕) ORCID logo https://orcid.org/0000-0003-3055-5130
Kim, Young Seok(김영석) ORCID logo https://orcid.org/0000-0002-0981-2107
Kim, Yong Oock(김용욱) ORCID logo https://orcid.org/0000-0002-3756-4809
Park, Beyoung Yun(박병윤)
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
Lee, Hye Yeon(이혜연) ORCID logo https://orcid.org/0000-0001-6945-1967
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