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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
2015
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
EISSN1741-4199
Volume24Issue:10Pages:108702
Corresponding Author鲍园 ; 朱佩平
SubtypeArticle
AbstractThe 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.
Keywordx-ray imaging noise variance spatial resolution computed tomography (CT)
Subject AreaPhysics
DOI10.1088/1674-1056/24/10/108702
Indexed BySCI ; ADS ; EI
Language英语
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
WOS IDWOS:000363327400101
ADS Bibcode2015ChPhB..24j8702B
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015ChPhB..24j8702B
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015ChPhB..24j8702B/citations
Citation statistics
Cited Times:2 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228835
Collection多学科研究中心
Recommended Citation
GB/T 7714
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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