구내방사선사진과 컴퓨터영상의 치아 인접면 치석 진단능의 비교
A comparison of conventional intraoral radiography and computer imaging techniques for the detection of proximal surface calculus
치과방사선 1994년 24권 1호 p.23 ~ 29
소속 상세정보
강병철/Byung-Cheol Kang
KMID : 0378219940240010023
Abstract
전남대학교 치과대학 학생을 대상으로 평행촬영법으로 촬영한 168 장의 구내방사선사진을
디지탈 영상으로 변환하여, 필름상의 치석 유무 판독 결과와 모니터상의 판독 결과를 비교
하였다. 3명의 구강악안면방사선학 전공 치과의사가 판독을 하되 필름상의 판독 결과를 판
정의 기준으로 하였다. 디지탈 영상은 상업용 필름-비디오 변환장치, 486DX PC, 그리고
PcVision과 frame grabber을 이용하여 얻었다. 모니터상의 개개 구내방사선사진상은 700×
480 pixel로 나타내었다. 디지탈 영상의 치석진단의 sensitivity는 0.79 -0.90( 평균 0.86) 이
었고, specificity는 0.03-0.43( 평균 0.17) 이었다.
#초록#
Intraoral radiographs are valuable in identifying calculus that intensify periodontal
disease especially for the proximal calculus.
With the advent of low cost, high performance computer, it became possible to
explore the use of digital image processing techniques on routine dental X-ray images.
There are already several digital radiographic systems, HVG(RadioVisioGraphy) by
Trophy Radiology (Atlanta, GA, USA), Sens-A-Ray by Regam Medical Systems(AB,
Sundsvall, Sweden), Vixa(Visualix) by the Gendex Corporation(Milwakee, WI, USA),and
Flash Dent by Villa Sistemi Medicali (Bucciasco, Italy).
Hidebot et at introduced four general-purpose image processing programs for the
Apple Macintosh Ⅱ computer.
Ann Wenzel and his coworker in paris reported that in detecting the occlusal caries,
digital images from RVG is somewhat superior to the conventional radiographs.
Most oral radiologist employ film images that are interpreted on a lightbox or view
box. We dentist are accustomed to the conventional film radiographs. But I think we
must use the digital images for diagnosis of oral and maxillofacial diseases in near
future. Now we have to adjust ourselves to the digital imaging on the monitor. And we
are needed the ability to transfer film based reading skills to a digitally based
presentation. And we also needed 13 building confidence in digital images and to
familiar with the digital images.
The aim of present investigation is to suggest economical hybrid system using
personal computer and to compare the periapical radiographs and their displayed digital
images for proximal calculus detection.
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