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유방촬영술 정도관리를 위한 현장조사, 팬톰검사 및 임상영상 평가

Other Titles
 Establishment of Quality Assessment Standard for Mammographic Equipments: Evaluation of Phantom and Clinical Images 
 이성훈  ;  최연현  ;  정수영  ;  김미혜  ;  김은경  ;  오기근  ;  김학희  ;  박정미  ;  박정희  ;  서보경  ;  이혜경  ;  손은주  ;  조나리야  ;  최혜영  ;  조병제  ;  김지영  ;  차은숙  ;  전용환  ;  한부경  ;  임효근 
 Journal of the Korean Society of Radiology, Vol.53(2) : 117-127, 2005 
Journal Title
 Journal of the Korean Society of Radiology 
Issue Date
Mammography ; Breast radiography ; quality assurance
Purpose: The purpose of this study was to establish a quality standard for mammographic equipment in Korea and to eventually improve mammographic quality in clinics and hospitals throughout Korea by educating technicians and clinic personnel. Materials and Methods: For the phantom test and on site assessment, we visited 37 sites and examined 43 sets of mammographic equipment. Items that were examined include phantom test, radiation dose measurement, developer assessment, etc. The phantom images were assessed visually and by optical density measurements. For the clinical image assessment, clinical images from 371 sites were examined following the new Korean standard for clinical image evaluation. The items examined include labeling, positioning, contrast, exposure, artifacts, collimation among others. Results: Quality standard of mammographic equipment was satisfied in all equipment during on site visits. Average mean glandular dose was 114.9 mRad. All phantom image test scores were over 10 points (average, 10.8 points). However, optical density measurements were below 1.2 in 9 sets of equipment (20.9%). Clinical image evaluation revealed appropriate image quality in 83.5%, while images from non-radiologist clinics were adequate in 74.6% (91/122), which was the lowest score of any group. Images were satisfactory in 59.0% (219/371) based on evaluation by specialists following the new Korean standard for clinical image evaluation. Satisfactory images had a mean score of 81.7 (1 S.D.=8.9) and unsatisfactory images had a mean score of 61.9 (1 S.D=11). The correlation coefficient between the two observers was 0.93 (p<0.01) in 49 consecutive cases. Conclusion: The results of the phantom tests suggest that optical density measurements should be performed as part of a new quality standard for mammographic equipment. The new clinical evaluation criteria that was used in this study can be implemented with some modifications for future mammography quality control by the Korean government.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eun-Kyung(김은경) ORCID logo https://orcid.org/0000-0002-3368-5013
Oh, Ki Keun(오기근)
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