디지털 영상 시스템을 이용한 알루미늄 당량화상에 의한 골량 측정에 관한 연구
A study on assessment of bone mass from aluminum-equivalent image by digital imaging system
김진수, 최의환, 김재덕,
소속 상세정보
김진수 ( ) - 조선대학교 치과대학 구강악안면방사선학교실
최의환 ( ) - 조선대학교 치과대학 구강악안면방사선학교실
김재덕 ( ) - 조선대학교 치과대학 구강악안면방사선학교실
KMID : 0353319960200020175
Abstract
The purpose of this study was to evaluate the method for quantitative assessment of
bone mass from aluminum-equivalent value of hydroxyapatite by using digital imaging system consisted of Power Macintosh 7200/120, 15-inch color monitor, and GT-9000 scanner with transparency unit.
After aluminum-equivalent image made from correlation between aluminum thickness and grey scale, the accuracy of conversion to mass from aluminum-equivalent value was evaluated. Measured bone mass was compared with converted bone mass from aluminum-equivalent value of hydroxyapatite block by correlation formula between aluminum-equivalent value of hydroxyapatite block and hydroxyapatite mass.
The results of this study were as follow;
1. Correlation between aluminum thickness and grey level for obtaining aluminum-equivalent image was high positively associated(r2=0.99). Converted masses from aluminum-equivalent value were very similar to measured masses. There was, statistically, no significant difference(P<0.05) between them.
2. Correlation between hydroxyapatite aluminum-equivalent and hydroxyapatite mass was shown to linear relation(rz=0.95).
3. Converted masses from aluminum-equivalent value of 3 dry mandible segments were similar to measured masses. The difference between the exposure directions was not significantly different(P<0.05).
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원문 및 링크아웃 정보
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