PHASE-CONTRAST

作品数：20被引量：16H指数：3
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相关领域：医药卫生更多>>
相关作者：包如意更多>>
相关机构：北京大学第一医院大连医科大学更多>>
相关期刊：《Chinese Medical Journal》《外科研究与新技术（中英文）》《Light(Science & Applications)》《Chinese Journal of Biomedical Engineering(English Edition)》更多>>
相关基金：国家自然科学基金天津市自然科学基金教育部留学回国人员科研启动基金上海市自然科学基金更多>>
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Efficient three-dimensional characterization of C/C composite reinforced with densely distributed fibers via X-ray phase-contrast microtomography被引量：4
《Chinese Optics Letters》2021年第7期99-104,共6页Ke Li Yantao Gao Haipeng Zhang Guohao Du Hefei Huang Hongjie Xu Tiqiao Xiao 
supported by the National Key Research and Development Program of China (Nos.2017YFA0206004,2017YFA0206002, 2018YFC1200204, and 2017YFA0403801);the National Natural Science Foundation of China(NSFC)(No.81430087)。
Carbon fiber(CF)/pyrolytic graphite(PG) composites are promising structural materials for molten salt reactors because of their superior performance.Due to the minor density difference between CF and PG, existing meth...
关键词：X-ray imaging C/C composite 3D characterization 
Enhanced quantitative X-ray phase-contrast images using Foucault differential filters
《Chinese Optics Letters》2017年第8期44-47,共4页Jaeho Choi Young-Sung Park 
supported by the research fund of Dankook University(No.R000122495)
Several X-ray phase visualization methods are being real- ized for imaging of phase objects, such as biological and polymeric specimens. Grating-based phase-contrast imaging using a source-grating-attached X-ray tube ...
关键词：real Enhanced quantitative X-ray phase-contrast images using Foucault differential filters FDF 
Experimental research on the feature of an x-ray Talbot–Lau interferometer versus tube accelerating voltage被引量：3
《Chinese Physics B》2015年第6期673-678,共6页王圣浩 Margie P.Olbinado Atsushi Momose 韩华杰 胡仁芳 王志立 高昆 张凯 朱佩平 吴自玉 
Project supported by the Major State Basic Research Development Program of China(Grant No.2012CB825800);the Science Fund for Creative Research Groups,China(Grant No.11321503);the National Natural Science Foundation of China(Grant Nos.11179004,10979055,11205189,and 11205157);the Japan–Asia Youth Exchange Program in Science(SAKURA Exchange Program in Science)Administered by the Japan Science and Technology Agency
X-ray Talbot-Lau interferometer has been used most widely to perform x-ray phase-contrast imaging with a con- ventional low-brilliance x-ray source, and it yields high-sensitivity phase and dark-field images of sample...
关键词：x-ray Talbot-Lau interferometer x-ray imaging PHASE-CONTRAST tube accelerating voltage x-ray tube 
Quantitative assessment of physiological cerebrospinal fluid flow in the cervical spinal canal with 3.0T phase-contrast cine MRI
《Neural Regeneration Research》2012年第18期1392-1397,共6页Hua Shang Huaijun Liu Leka Yan Jianming Lei Caixia Cui Hui Li 
supported by the Science and Technology Support Program of Hebei Province(Cervical spinal canal cerebrospinal fluid movement using 3.0TMR fast phase-contrast cine imaging),No.112061179D
A total of 50 healthy volunteers aged between 18 and 54 years underwent phase-contrast cine MR to assess cerebrospinal fluid flow characteristics in different regions of the vertebral canal. The results revealed that ...
关键词：magnetic resonance imaging PHASE-CONTRAST cerebrospinal fluid vertebral canal subarachnoidspace flow velocity neural regeneration 
Optimal velocity encoding during measurement of cerebral blood flow volume using phase-contrast magnetic resonance angiography
《Neural Regeneration Research》2011年第23期1796-1800,共5页Gang Guo Yonggui Yang Weiqun Yang 
the Medical Program of the Scientific & Technical Foundation in Xiamen(MRI study of chronic cerebrovascular insufficiency) in 2008,No.3502Z20084028
This study investigated the effect of velocity encoding on measurement of brain blood flow and blood volume of inflow and outflow using phase-contrast magnetic resonance angiography. A single two-dimensional phase-con...
关键词：cerebral blood flow velocity encoding PHASE-CONTRAST magnetic resonance imaging 
Cerebral blood flow volume measurements of the carotid artery and ipsilateral branches using two-dimensional phase-contrast magnetic resonance angiography
《Neural Regeneration Research》2011年第30期2367-2371,共5页Gang Guo Yonggui Yang Weiqun Yang 
the Medical Program of Scientific & Technical Foundation in Xiamen in 2008, No. 3502Z20084028
The optimal velocity encoding of phase-contrast magnetic resonance angiography （PC MRA） in measuring cerebral blood flow volume （BFV） ranges from 60 to 80 cm/s. To verify the accuracy of two-dimensional （2D） PC ...
关键词：two-dimensional phase-contrast magnetic resonance angiography blood flow three-dimensional time-of-flight phase-contrast magnetic resonance angiography internal carotid artery common carotid artery external carotid artery velocity encoding 
Visibility in differential phase-contrast imaging with partial coherence source被引量：3
《Chinese Physics B》2007年第6期1632-1636,共5页刘鑫 郭金川 彭翔 牛憨笨 
This paper gives theoretical analysis of visibility of fringes, which is influenced by distances, temporal and spatial coherence of source, in hard x-ray differential phase-contrast imaging with microfocus x-ray sourc...
关键词：VISIBILITY differential phase-contrast interference fringes phase grating 
Instability of Solution of Phase Retrieval in Direct Diffraction Phase-Contrast Imaging with Partially Coherent X-Ray Source
《Chinese Physics Letters》2006年第12期3259-3262,共4页郭华 韩申生 
Supported by the Natural Science Foundation of Shanghai under Grant No 04ZR14146 and the National Natural Science Foundation of China under Grant No 60477007.
The theoretical model of direct diffraction phase-contrast imaging with partially coherent x-ray source is expressed by an operator of multiple integral. It is presented that the integral operator is linear. The probl...
关键词：RECONSTRUCTION ALGORITHMS RECURSIVE ALGORITHM INTENSITY MAGNITUDE OBJECTS SYSTEM 
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