지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Breast cancer is the most frequently appearing cancer in women, these days. To reduce mortality of breast cancer, periodic check-up is strongly recommended. X-ray mammography is one of powerful diagnostic imaging systems to detect 50~100 um micro-calcification which is the early sign of breast cancer. Although x-ray mammography has very high spatial resolution, it is not easy yet to distinguish cancerous tissue from normal tissues in mammograms and new tissue characterizing methods are required. Recently ultrasound elastography technique has been developed, which uses the phenomenon that cancerous tissue is harder than normal tissues. However its spatial resolution is not enough to detect breast cancer. In order to develop a new elastography system with high resolution we are developing x-ray elasticity imaging technique. It uses the small differences of tissue positions with and without external breast compression and requires an algorithm to detect tissue displacement. In this paper, computer simulation is done for preliminary study of x-ray elasticity imaging. First, 3D x-ray breast phantom for modeling woman’s breast is created and its elastic model for FEM (finite element method) is generated. After then, FEM experiment is performed under the compression of the breast phantom. Using the obtained displacement data, 3D x-ray phantom is deformed and the final mammogram under the compression is generated. The simulation result shows the feasibility of x-ray elasticity imaging. We think that this preliminary study is helpful for developing and verifying a new algorithm of x-ray elasticity imaging.
목차
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참고문헌 (9)
참고문헌 신청
/ / http://people.ee.duke.edu/~jshorey/BreastPhantom.htm
A. Samani / 2007 / Elastic moduli of normal and pathological human breast tissues: an inversiontechnique- based investigation of 169 samples / Phys. Med. Biol 52 (6) : 1565 ~
C. Zyganitidis / 2007 / A novel simulation algorithm for soft tissue compression / Med. Bio. Eng. Comput 45 (7) : 661 ~ 669
F. Lefebvre / 1994 / A Simulation model of clustered breast microcalcifications / Med. Phys 21 (12) : 1865 ~ 1874
F.O. Bochud / 1999 / Estimation of the noisy component of anatomical backgrounds / Med. Phys 26 (7) : 1365 ~ 1370
C. Zyganitidis / 2007 / A novel simulation algorithm for soft tissue compression / Med. Bio. Eng. Comput 45 (7) : 661 ~ 669
F. Lefebvre / 1994 / A Simulation model of clustered breast microcalcifications / Med. Phys 21 (12) : 1865 ~ 1874
F.O. Bochud / 1999 / Estimation of the noisy component of anatomical backgrounds / Med. Phys 26 (7) : 1365 ~ 1370
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