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노이즈 감소 필터 사용이 판독능에 미치는 효과
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  • 노이즈 감소 필터 사용이 판독능에 미치는 효과
저자명
정영철,최보람,허경회,이원진,허민석,이삼선,최순철,Jung. Young-Chul,Choi. Bo-Ram,Huh. Kyung-Hoi,Yi. Yon-Jin,Heo. Min-Suk,Lee. Sam-Sun,Choi. Soon-Chul
간행물명
대한구강악안면방사선학회지
권/호정보
2010년|40권 3호|pp.103-107 (5 pages)
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대한구강악안면방사선학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Purpose : This study was performed to examine the effects of image filter on observer performance by counting the number of holes at each wedge step on a radiographic image. Materials and Methods : An aluminum step wedge with 11 steps ranged in thickness from 1.5 mm to 16.5 mm in 1.5 mm increments was fabricated for this study. Each step had 10 notched holes with 1.0 mm diameter on the bottom of the step wedge which were ranged in depths from 0.1 mm to 1.0 mm in 0.1 mm increments. Digital radiographic raw images of the aluminum step wedge were acquired by using CCD intraoral sensor. The images were processed using several types of noise reduction filters and kernel sizes. Three observers counted the number of holes which could be discriminated on each step. The data were analyzed by ANOVA. Results : The number of holes at each step was decreased as the thickness of step was increased. The number of holes at each step on the raw images was significantly higher than that on the processed images. The number of holes was different according to the types and kernel sizes of the image filters. Conclusions : The types and kernel sizes of image filters on observer performance were important, therefore, they should be standardized for commercial digital imaging systems.