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 Wei1,2,3; Fu Guo-Tao1,2,3; Sun Cui-Li1,2; Wang Yan-Fang1,2; Wei Cun-Feng1,2; Cao Da-Quan1,2,3; Que Jie-Min1,2; Tang Xiao1,2,3; Shi Rong-Jian1,2; Wei Long1,2 |
| 刊名 | Chinese physics c
 |
| 出版日期 | 2011-10-01 |
| 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 |
| 通讯作者 | Zhao wei(zhaow@ihep.ac.cn) |
| 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. |
| WOS关键词 | COMPUTED-TOMOGRAPHY |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000295742500018 |
| 出版者 | CHINESE PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176139 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zhao Wei |
| 作者单位 | 1.CAS, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China 2.Beijing Engn Res Ctr Radiog Tech & Equipment, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao Wei,Fu Guo-Tao,Sun Cui-Li,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 Wei.,Fu Guo-Tao.,Sun Cui-Li.,Wang Yan-Fang.,Wei Cun-Feng.,...&Yu Zhong-Qiang.(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 Wei,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： iSwitch采集
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。