| Entropy-based method to evaluate the data integrity | |
| Xu Peng ; Ma Tianyu ; Jin Yongjie | |
| 2010-05-10 ; 2010-05-10 | |
| 会议名称 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT ; 3rd International Conference on Imaging Technologies in Biomedical Sciences ; Milos, GREECE ; Web of Science |
| 关键词 | data integrity entropy information theory SPECT Instruments & Instrumentation Nuclear Science & Technology Physics, Particles & Fields Spectroscopy |
| 中文摘要 | Projection stage of single photon emission computed tomography (SPECT) was discussed to analyze the characteristics of information transmission and evaluate the data integrity. Information is transferred from the source to the detector in the photon emitting process. In the projection stage, integrity of projection data can be assessed by the information entropy, which is the conditional entropy standing for the average uncertainty of the source object under the condition of projection data. Simulations were performed to study projection data of emission-computed tomography with a pinhole collimator. Several types of collimators were treated. Results demonstrate that the conditional entropy shows the data integrity, and indicate how the algorithms are matched or mismatched to the geometry. A new method for assessing data integrity is devised for those decision makers to help improve the quality of image reconstruction. (c) 2006 Elsevier B.V. All rights reserved. |
| 会议录出版者 | ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 语种 | 英语 ; 英语 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/18651]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Xu Peng,Ma Tianyu,Jin Yongjie. Entropy-based method to evaluate the data integrity[C]. 见:NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 3rd International Conference on Imaging Technologies in Biomedical Sciences, Milos, GREECE, Web of Science. |
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