Digital subtraction radiography에 있어서 대조도가 판독에 미치는 영향
The influence of contrast in the interpretation of the digital subtraction radiography
부산치대논문집 1993년 10권 1호 p.25 ~ 31
나경수,
소속 상세정보
나경수 ( ) - 부산대학교 치과대학 치과방사선학교실
KMID : 0605219930100010025
Abstract
The influence of contrast in the interpretation ability of the artificially made periodontal lesions of 2 and 3 mm size in digital subtraction radiography was studied and the followings were obtained:
1. The same thickness of the step wedges could have statistically different gray levels according to the size of the steps in the sarne and different radiographs.
2. The ability to detect the artificial periodontal lesions was better in the digital subtraction radiography than in the conventional and digital radiographies and the contrast correction of the digital subtraction image didn´t have any effct on its interpretation ability.
3. The mean gray levels for correction in the digital subtraction images was 5.74+4.49.
키워드
원문 및 링크아웃 정보
등재저널 정보