| 蒋诗平,陈阳,李妹芳,陈亮,熊壮,余永强.同轴X射线位相衬度成像实验研究[J].中国医学影像技术,2007,23(11):1721~1723 |
| 同轴X射线位相衬度成像实验研究 |
| Experimental researches of in-line X-ray phase contrast imaging |
| 投稿时间：2007-04-14 修订日期：2007-07-11 |
| DOI： |
| 中文关键词: X射线成像 位相衬度 同步辐射 |
| 英文关键词:X-ray imaging Phase contrast Synchrotron radiation |
| 基金项目:本课题受国家自然科学基金资助(60477001)。 |
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| 中文摘要: |
| 目的 研究利用类点光源的同轴X射线位相衬度成像技术。方法 在北京同步光源4W1A光束线上,分别利用白光束X射线和14 keV单色X射线,采用同轴方式开展生物样品的位相衬度成像实验。结果 位相衬度图像比吸收衬度的图像分辨率更高、衬度更好。结论 对于X射线吸收很弱的样品,位相衬度成像能够得到更好衬度和更高分辨率的图像。利用类点源X射线同轴相位衬度成像技术相对比较容易地被用于临床。 |
| 英文摘要: |
| Objective To develop in-line X-ray phase contrast imaging technique using point-like source. Methods In-line phase contrast imaging experiments of biological samples were made on the beamline 4W1A at BSRF. The experiments employed white beam X-rays and 14 keV monochromatic X-ray, respectively. Results Images of phase contrast have better contrast and higher resolution than ones of absorption contrast do. Conclusion The X-ray images of the objects of weak absorption have better contrast and higher resolution using phase contrast imaging technique. In-line phase contrast imaging technique using point-like X-rays sources is comparatively easily applied to clinic. |
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