s-IGDT 시스템의 X-선원 배열 형태 및 투영상 개수에 따른 영상 화질 평가에 관한 연구

• 영문명: Image Quality Evaluation according to X-ray Source Arrangement Type and the Number of Projections in a s-IGDT System
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 이다혜(Dahye Lee) 남기복(KiBok Nam) 이승완(Seungwan Lee)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제45권 제2호, 117~125쪽, 전체 9쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2022.04.30

영문 초록

Although stationary inverse-geometry digital tomosynthesis (s-IGDT) is able to reduce motion artifacts, image acquisition time and radiation dose, the image quality of the s-IGDT is degraded due to the truncations arisen in projections. Therefore, the effects of geometric and image acquisition conditions in the s-IGDT should be analyzed for improving the image quality and clinical applicability of the s-IGDT system. In this study, the s-IGDT images were obtained with the various X-ray source arrangement types and the various number of projections. The resolution and noise characteristics of the obtained s-IGDT images were evaluated, and the characteristics were compared with those of the conventional DT images. The s-IGDT system using linear X-ray source arrangement and 40 projections maximized the image characteristics of resolution and noise, and the corresponding system was superior to the conventional DT system in terms of image resolution. In conclusion, we expect that the s-IGDT system can be used for providing medical images in diagnosis.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

X-선원 배열 투영상 개수 분해능 잡음 s-IGDT X-ray source arrangement Number of projections Resolution Noise