Beam hardening correction for a cone-beam CT system and its effect on spatial resolution
文献类型：期刊论文
| 作者 | Zhao, W; Fu, GT; Sun, CL; Wang, YF; Wei, CF; Cao, DQ; Que, JM; Tang, X; Shi, RJ; Wei, L |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2011 |
| 卷号 | 35期号:10页码:978-985 |
| 关键词 | beam hardening correction cone-beam computed tomography spatial resolution |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/35/10/018 |
| 文献子类 | 期刊 |
| 英文摘要 | In this paper, we present a beam hardening correction (BHC) method in three-dimension space for a cone-beam computed tomography (CBCT) system in a mono-material case and investigate its effect on the spatial resolution. Due to the polychromatic character of the X-ray spectrum used, cupping and streak artifacts called beam hardening artifacts arise in the reconstructed CT images, causing reduced image quality. In addition, enhanced edges are introduced in the reconstructed CT images because of the beam hardening effect. The spatial resolution of the CBCT system is calculated from the edge response function (ERF) on different planes in space. Thus, in the CT images with beam hardening artifacts, enhanced ERFs will be extracted to calculate the modulation transfer function (MTF), obtaining a better spatial resolution that deviates from the real value. Reasonable spatial resolution can be obtained after reducing the artifacts. The 10% MTF value and the full width at half maximum (FWHM) of the point spread function with and without BHC are presented. |
| 电子版国际标准刊号 | 2058-6132 |
| WOS关键词 | COMPUTED-TOMOGRAPHY |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000295742500018 |
| 源URL | [https://ir.ihep.ac.cn/handle/311005/304299]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhao, W,Fu, GT,Sun, CL,et al. Beam hardening correction for a cone-beam CT system and its effect on spatial resolution[J]. CHINESE PHYSICS C,2011,35(10):978-985. |
| APA | Zhao, W.,Fu, GT.,Sun, CL.,Wang, YF.,Wei, CF.,...&Yu, ZQ.(2011).Beam hardening correction for a cone-beam CT system and its effect on spatial resolution.CHINESE PHYSICS C,35(10),978-985. |
| MLA | Zhao, W,et al."Beam hardening correction for a cone-beam CT system and its effect on spatial resolution".CHINESE PHYSICS C 35.10(2011):978-985. |
入库方式： OAI收割
来源：高能物理研究所
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