한국의학물리학회:학술대회논문집 (Proceedings of the Korean Society of Medical Physics Conference)
- 한국의학물리학회 2002년도 Proceedings
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- Pages.382-384
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- 2002
Trial of Computer Simulation of Image Reconstruction from Incomplete Data for New CT with Reduced Exposure
- Hayakawa, Yoshinori (Dept. Biomed.Eng., Toin University of Yokohama) ;
- Furuya, Toshimitsu (Dept. Biomed.Eng., Toin University of Yokohama) ;
- Sakakibara, Norifumi (Dept. Biomed.Eng., Toin University of Yokohama)
- 발행 : 2002.09.01
초록
Filtered-Back-Projection technique is used in X-ray CT image reconstruction. This requires X-ray transmission data from all directions. As the transverse cross-section of the body is approximately 50 cm, transmitted X-rays in this direction are strongly attenuated. If X-ray transmission data in this direction is avoided, exposure to the patients seems to be reduced one 20th of usual value. Some alternative method has to be found for clinically sufficient image quality. New methods are under development and tentative results are reported that utilizes the principle of superposition.