Investigation of noise properties in grating-based x-ray phase tomography with reverse projection method
文献类型：期刊论文
| 作者 | 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
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| 刊名 | CHINESE PHYSICS B
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| 出版日期 | 2015 |
| 卷号 | 24期号:10页码:108702 |
| 关键词 | x-ray imaging noise variance spatial resolution computed tomography (CT) |
| 通讯作者 | 鲍园 ; 朱佩平 |
| 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. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI ; EI |
| WOS记录号 | WOS:000363327400101 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228835]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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