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衍射增强成像与成像应用实验 被引量:2
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作者 彭屹峰 陈绍亮 《中国医学计算机成像杂志》 CSCD 2006年第6期422-425,共4页
目的:目前的常规X线医学成像是通过吸收衬度成像,但分辨率不够高,由于DEI采用相位衬度机制而不是依赖于物体的吸收,故适合弱吸收组织尤其是软组织成像。本实验旨在评价DEI在生物医学样品成像中的诊断价值。材料和方法:大鼠脏器样品切片,... 目的:目前的常规X线医学成像是通过吸收衬度成像,但分辨率不够高,由于DEI采用相位衬度机制而不是依赖于物体的吸收,故适合弱吸收组织尤其是软组织成像。本实验旨在评价DEI在生物医学样品成像中的诊断价值。材料和方法:大鼠脏器样品切片,在BSRF的4W1A束线上进行DEI方法成像。首先扫描获得摇摆曲线,再选择摇摆曲线上不同位置进行成像,成像结果与常规吸收像进行对照,分辨率通过显微放大法获得。结果:图像能显示常规医学X成像方法无法显示的肝脏微细结构,分辨率达到微米。结论:DEI的优良分辨率和衬度将有望改进生物医学组织的影像诊断水平。 展开更多
关键词 衍射增强成像 摇摆曲线 生物医学成像 x线医学成像
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Biomedical X-ray Imaging Enabled by Carbon Nanotube X-ray Sources
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作者 Guohua Cao 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2018年第4期529-536,615,共9页
Although discovered more than 100 years ago, X-ray source technology has evolved rather slowly. The recent invention of the carbon nanotube (CNT) X-ray source technology holds great promise to revolutionize the fiel... Although discovered more than 100 years ago, X-ray source technology has evolved rather slowly. The recent invention of the carbon nanotube (CNT) X-ray source technology holds great promise to revolutionize the field of biomedical X-ray imaging. CNT X-ray sources have been successfully adapted to several biomedical imaging applications including dynamic rnicro-CT of small animals and stationary breast tomosynthesis of breast cancers. Yet their more irnportant biomedical imaging applications still lie ahead in the future, with the devel- oprnent of stationary rnulti-source CT as a noteworthy exarnple. 展开更多
关键词 Biomedical imaging x-ray imaging x-ray source Carbon nanotube x-raysource Carbon nanotube Field emission Cornputed tornography Breast tornosynthesis
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