| Research on the relationship between projection number and image noise level in FBP reconstruction | |
| Fang, Zheng ; Gu, Xin ; Zhang, Xing Liang ; Zhang, Jing Rui ; Chen, Si Yuan ; Zhang JR(张景瑞) | |
| 2013 | |
| 关键词 | Image quality Materials science Signal to noise ratio |
| 英文摘要 | Conference Name:2013 3rd International Conference on Advanced Measurement and Test, AMT 2013. Conference Address: Xiamen, China. Time:March 13, 2013 - March 14, 2013.; The number of projection affects the reconstruction quality in computed tomography system. Larger projection number will lead to better reconstruction quality. On the other hand, less projection number can reduce the radiation dose, save time and keep the patients comfortable. The optimal number of projection compromises both the mathematical accuracy and practical requirement. The purpose of this paper is to find the relationship between the projection number and the noise properties of reconstructed cross-section. It can provide references for researchers on CT application. A micro-CT system is utilized to validate the relationship between projection number and reconstruction quality in fan beam geometry. Full-scan and short-scan method are applied to reconstruct the specimen. Compared with full-scan method, short-scan can reduce radiation dose with the same step angle, and it can achieve better results with the same projection number when the sample data is sufficient. ? (2013) Trans Tech Publications, Switzerland. |
| 语种 | 英语 |
| 出处 | http://dx.doi.org/10.4028/www.scientific.net/AMR.718-720.2324 |
| 出版者 | Trans Tech Publications Ltd |
| 内容类型 | 其他 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/86150]  |
| 专题 | 物理技术－会议论文 |
| 推荐引用方式 GB/T 7714 | Fang, Zheng,Gu, Xin,Zhang, Xing Liang,et al. Research on the relationship between projection number and image noise level in FBP reconstruction. 2013-01-01. |
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