| 硬X射线位相衬度成象 |
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| 引用本文： | 高大超,A.POGANY,A.W.STEVENSON,T.GUREYEV,S.W.WILKINS,麦振洪.硬X射线位相衬度成象[J].物理学报,2000,49(12):2357-2368. |
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| 作者姓名： | 高大超 A.POGANY A.W.STEVENSON T.GUREYEV S.W.WILKINS 麦振洪 |
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| 作者单位： | (1)Commonwealth Science and Industry Research Organization Manufacturing Science & Technology PB 33,Clayton South MDC,Victoria 3169,Australia; (2)中国科学院物理研究所和凝聚态物理中心，北京 100080 |
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| 摘 要： | 常规X射线成象技术是建立在吸收衬度和几何光学基础上.介绍了“in-line”位相衬度成象 技术和成象理论.以生物样品为例，说明常规X射线吸收衬底成象与位相衬度成象的差别，并 对X射线源尺寸对成象衬度的影响进行了研究.此外，对吸收衬底象和位相衬度象的关键参量 进行了计算模拟和讨论.
关键词：
位相衬度
成象
硬X射线
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| 关 键 词： | 位相衬度 成象 硬X射线 |
| 收稿时间： | 3/3/2000 12:00:00 AM |
| 修稿时间： | 2000-03-03 |
HARD X-RAY PHASE-CONTRAST IMAGING |
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| D.C.GAO,A.POGANY,A.W.STEVENSON,T.GUREYEV,S.W.WILKINS,MAI ZHEN-HONG.HARD X-RAY PHASE-CONTRAST IMAGING[J].Acta Physica Sinica,2000,49(12):2357-2368. |
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| Authors: | DCGAO APOGANY AWSTEVENSON TGUREYEV SWWILKINS MAI ZHEN-HONG |
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| Abstract: | Conventional X-ray radiography is based on absorption contrast and assumes geome trical optics. An “in-line” method and theory of hard X-ray phase-contrast ima ging were introduced. The differences between the conventional X-ray absorption contrast image and the phase contrast image were distinguished by using radiogra phs of biological samples. The effect of X-ray source size on the image contrast was investigated. Moreover, the key parameters of absorption contrast image and phase contrast image were simulated theoretically and discussed. |
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| Keywords: | phase-contrast imaging hard X-ray |
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