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| 衍射增强成像的若干基础问题研究Ⅰ.衍射增强成像的衬度与X射线能量的关系 | |
| 引用本文： | 刘成林,闫晓辉,张新夷,朱佩平,黄万霞,袁清习.衍射增强成像的若干基础问题研究Ⅰ.衍射增强成像的衬度与X射线能量的关系[J].核技术,2006,29(12):881-884. |
| 作者姓名： | 刘成林 闫晓辉 张新夷 朱佩平 黄万霞 袁清习 |
| 作者单位： | 1. 复旦大学同步辐射研究中心、复旦大学物理系、应用表面物理国家重点实验室,上海,200433;盐城师范学院物理系,盐城,224002 2. 复旦大学同步辐射研究中心、复旦大学物理系、应用表面物理国家重点实验室,上海,200433 3. 复旦大学同步辐射研究中心、复旦大学物理系、应用表面物理国家重点实验室,上海,200433;上海针灸和经络研究所,上海,201203 4. 中国科学院高能物理研究所,北京,100049 |
| 基金项目： | 国家重点基础研究发展计划(973计划) , 江苏省高校自然科学基金 |
| 摘 要： | 为了探讨X射线衍射增强成像的衬度与X射线能量的关系,利用北京同步辐射光源4W1A光束线引出的硬X射线对大块正常和癌变的乳腺组织进行成像研究.在摇摆曲线顶部位置获得的图像(峰位图像)和表观吸收图像的衬度随X射线能量的变化关系是相似的,说明峰位图像和表观吸收图像包含的主要衬度相似,即吸收衬度,而折射图像的衬度随X射线能量的增大总体上呈现下降趋势.综合来看,对于乳腺类的软组织来说,DEI成像在低能量端有很好的衬度,反映了衍射增强成像更适合于主要由轻元素组成的物体的成像. |
| 关 键 词： | X射线衍射增强成像 衬度 X射线能量 同步辐射 乳腺组织 |
| 收稿时间： | 08 11 2006 12:00AM |
| 修稿时间： | 2006-08-112006-09-20 |
Studies on some basic problems about diffraction enhanced imaging Ⅰ. Relation between the contrast of imaging and the energy of X-rays |
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| LIU Chenglin,YAN Xiaohui,ZHANG Xinyi,ZHU Peiping,HUANG Wanxia,YUAN Qingxi.Studies on some basic problems about diffraction enhanced imaging Ⅰ. Relation between the contrast of imaging and the energy of X-rays[J].Nuclear Techniques,2006,29(12):881-884. | |
| Authors: | LIU Chenglin YAN Xiaohui ZHANG Xinyi ZHU Peiping HUANG Wanxia YUAN Qingxi |
| Affiliation: | 1 Synchrotron Radiation Research Center, Physics Department, Surface Physics (National Key |
| Abstract: | For discussing the relation between the contrast of X-ray diffraction enhanced imaging (DEI) and the energy of X-rays, the massive samples of breast tissue including normal and cancerous were studied with the DEI method using the hard X-rays from 4W1A beamline at the Beijing Synchrotron Radiation Facility (BSRF). The results show that the contrasts of the peak-position image or apparent absorption image keep unchanged when different X-ray energies are used. The contrast of refraction image trends to be weakened when the X-ray energy is increased. As a result, it seems the DEI method is fit to image objects made of light elements. |
| Keywords: | X-ray diffraction enhanced imaging Contrast X-ray energy Synchrotron radiation Breast tissue |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
