Investigation of noise properties in grating-based x-ray phase tomography with reverse projection method
Bao Y(鲍园); Wang Y(王研); Zhu PP(朱佩平); Wu ZY(吴自玉); Yuan, B., W. Yan, G. Kun, W. Zhi-Li, Z. Pei-Ping and W. Zi-Yu
刊名CHINESE PHYSICS B
2015
卷号24期号:10页码:108702
关键词x-ray imaging noise variance spatial resolution computed tomography (CT)
学科分类Physics
DOI10.1088/1674-1056/24/10/108702
通讯作者鲍园 ; 朱佩平
文章类型Article
英文摘要The relationship between noise variance and spatial resolution in grating-based x-ray phase computed tomography (PCT) imaging is investigated with reverse projection extraction method, and the noise variances of the reconstructed absorption coefficient and refractive index decrement are compared. For the differential phase contrast method, the noise variance in the differential projection images follows the same inverse-square law with spatial resolution as in conventional absorption-based x-ray imaging projections. However, both theoretical analysis and simulations demonstrate that in PCT the noise variance of the reconstructed refractive index decrement scales with spatial resolution follows an inverse linear relationship at fixed slice thickness, while the noise variance of the reconstructed absorption coefficient conforms with the inverse cubic law. The results indicate that, for the same noise variance level, PCT imaging may enable higher spatial resolution than conventional absorption computed tomography (ACT), while ACT benefits more from degraded spatial resolution. This could be a useful guidance in imaging the inner structure of the sample in higher spatial resolution.
类目[WOS]Physics, Multidisciplinary
收录类别SCI ; EI
WOS记录号WOS:000363327400101
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228835
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Bao Y,Wang Y,Zhu PP,et al. Investigation of noise properties in grating-based x-ray phase tomography with reverse projection method[J]. CHINESE PHYSICS B,2015,24(10):108702.
APA 鲍园,王研,朱佩平,吴自玉,&Yuan, B., W. Yan, G. Kun, W. Zhi-Li, Z. Pei-Ping and W. Zi-Yu.(2015).Investigation of noise properties in grating-based x-ray phase tomography with reverse projection method.CHINESE PHYSICS B,24(10),108702.
MLA 鲍园,et al."Investigation of noise properties in grating-based x-ray phase tomography with reverse projection method".CHINESE PHYSICS B 24.10(2015):108702.
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