Spatial resolution of pinhole single photon emission computed tomography imaging
文献类型：期刊论文
| 作者 | Dai, QS（代秋声） ; Qi, YJ（漆玉金） |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2010 |
| 卷号 | 59期号:2页码:9 |
| 关键词 | pinhole single photon emission computed tomography spatial resolution Monte Carlo method |
| ISSN号 | 1000-3290 |
| 通讯作者 | Qi, YJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 英文摘要 | The spatial resolution of pinhole single photon emission computed tomography (SPECT) imaging is usually estimated according to Anger' s empirical formula, which could result in a large inaccuracy in experimental measurement. We present a more accurate formula based on the analysis of physical processes of pinhole imaging. The effectiveness of the proposed formula was evaluated by accurate Monte Carlo simulations and experiments of the phantom imaging. The images were reconstructed using three-dimensional iterative OSEM algorithm. Then the effects of the voxel size, the geometrical mapping of the projection matrix and the ratio of detector size to imaging object size, on the spatial resolution were discussed. The experiment results show that the spatial resolution estimated by the proposed formula is about 10% smaller than the experimental value while the estimation by the Anger' s formula is about 60% larger than the experimental value. Therefore, our proposed formula is more accurate than Anger' s formula for predicting the spatial resolution of pinhole SPECT imaging, and it can be utilized for design and use of pinhole SPECT system. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000274699000100 |
| 公开日期 | 2012-04-11 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/7053]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2004-2010年 |
| 推荐引用方式 GB/T 7714 | Dai, QS,Qi, YJ. Spatial resolution of pinhole single photon emission computed tomography imaging[J]. ACTA PHYSICA SINICA,2010,59(2):9. |
| APA | Dai, QS,&Qi, YJ.(2010).Spatial resolution of pinhole single photon emission computed tomography imaging.ACTA PHYSICA SINICA,59(2),9. |
| MLA | Dai, QS,et al."Spatial resolution of pinhole single photon emission computed tomography imaging".ACTA PHYSICA SINICA 59.2(2010):9. |
入库方式： OAI收割
来源：上海应用物理研究所
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