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인공적 인접면 치아우식증의 구내방사선사진과 디지탈 영상의 진단능 평가
DIAGNOSTIC ABILITY OF THE PERIAPICAL RADIOGRAPHS AND DIGITAL IMAGE IN THE DETECTION OF THE ARTIFICIAL PROXIMAL CARIES

치과방사선 1994년 24권 2호 p.439 ~ 450

허민석, 정성창,

소속 상세정보

허민석 ( ) - 서울대학교
정성창 ( ) - 서울대학교 치과대학 구강악안면방사선학

KMID : 0378219940240020439

Abstract

인접면이 건전한 36개 치아의 72인접면 중 36면에만 인공적으로 인접면 치아우식증을 형
성한후 얻어진 구내방사선사진과 디지탈 영상 및 강조영상의 3가지 영상법에 대한 ROC 분
석 결과 다음과 같은 결론을 얻었다.
1. 구내방사선사진에 대한 ROC 면적의 평균값은 0.9274, 디지탈 영상에 대한 ROC 면적의
평균값은 0.9168, 강조영상에 대한 ROC 면적의 평균값은 0.9339이었다.
2. 진단능의 값은 강조영상, 구내방사선사진, 디지탈 영상의 순으로 나타났다.
3. 3가지 영상법의 진단능의 값을 paired t-test로 검증한 결과 유의성 있는 차이는 없는
것으로 나타났다(p>0.05).
#초록#
Recently, the digital image was introduced into radiological image. The digital image
has the power of contrast enhancement, histogram control, and other digitally
enhancement. At the point of the resolution, periapical radiograph is superior to the
digital image, but enhanced digital procedure improves the diagnostic ability of the
digital image.
The purpose of this study was to evaluate the diagnostic ability of artificial proximal
caries in conventional radiographs, digital radiographs and enhanced digital radiographs
(histogram specification). ROC (Receiver Operating Characteristic) analysis and paired
t-test were used for the evaluation of detectability, and following results were acquired:
1. The mean ROC area of conventional radiographs was 0.9274.
2. The mean ROC area of unenhanced digital image was 0.9168.
3. The mean ROC area of enhanced digital image was 0.9339.
4. The diagnostic ability of three imaging methods was not significant
difference(p>0.05).
So, the digital images had similar diagnostic ability of artificial proximal caries to
conventional radiographs. If properly enhanced digital image, it may be superior to
conventional radiographs.

artificial proximal caries; conventional radiographs; digitized radiographs; entranced digital image; ROC analysis;