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논문검색

CT AAPM 팬텀에서 슬라이스 두께, 공간 분해능, 저대조도 분해능의 MATLAB을 이용한 정량적 분석 방법에 관한 연구

원문정보

A Study on the Safety of Electromagnetic Wave of Medical Imaging System

송영우, 김시현, 안정민, 김광훈, 이채연, 서선열, 오현식

피인용수 : 0(자료제공 : 네이버학술정보)

초록

영어

We performed the quantitative analysis using MATLAB for slice thickness, spatial resolution, and low contrast resolution with the 50 received images which have suitable judgement by scanning AAPM phantom using GE, PHILIPS, SIEMENS, and TOSHIBA. Slice thickness and spatial resolution were measured by using full width at half maximum(below FWHM). Spatial resolution was confirmed that FWHM interval more than 1.0 mm size. Low contrast resolution was measured that how close by using Roundness Index(below RI) until 6.4 mm size. The spatial resolution 9 images and low contrast resolution 10 images which have disapproved judgement were also had the quantitative analysis. The statistic analysis was judged to have statistically significant differences when p-value is less than 0.05 through SPSS statistics 19.0 and T-test (paired t-test). For slice thickness 5 mm, the average qualitative evaluation group shows 4.98 mm and quantitative evaluation group shows 5.02. For slice thickness 10 mm, the average qualitative evaluation group shows 9.98 mm and quantitative evaluation group shows 9.86. No significant differences (p=0.07, p=0.06) with 5 mm and 10 mm. It confirmed the interval for all FWHM until 1.75, 1.50, 1.25, 1.00 mm as approved images on spatial resolution ,and the average distance was 0.102 mm and the minimum distance 0.054 mm. For disapproved images, all interval was not showed under 1.00 mm. For low contrast resolution, spproved image’s RI value shows average 0.81 and minimum 0.77. The disapproved image’s RI average shows 0.70. Statiscally significant differences were presented (all p<0.05) following hole size.

목차

Abstract
1. 서론
2. 대상 및 방법
2.1 재료 및 장비
2.2 방법
3. 결과
3.1 슬라이스 두께
3.2 공간분해능
3.3 저대조도 분해능
4. 고찰
5. 결론
6. 참고문헌

저자정보

  • 송영우 Yeong-Woo Song. 을지대학교
  • 김시현 Si-Hyun Kim. 을지대학교
  • 안정민 Jeong-Min Ahn. 을지대학교
  • 김광훈 Gwang-Hoon Kim. 을지대학교
  • 이채연 Chae-Yeon Lee. 을지대학교
  • 서선열 Sun-Youl Seo. 을지대학교
  • 오현식 Hyun-Sik Oh. 서울 삼성의료원

참고문헌

자료제공 : 네이버학술정보

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