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|a eng
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| 100 |
1 |
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|a Zeng, Dong
|e verfasserin
|4 aut
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|a A Simple Low-dose X-ray CT Simulation from High-dose Scan
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|c 2015
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|a Text
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|a ohne Hilfsmittel zu benutzen
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Low-dose X-ray computed tomography (CT) simulation from high-dose scan is required in optimizing radiation dose to patients. In this study, we propose a simple low-dose CT simulation strategy in sinogram domain using the raw data from high-dose scan. Specially, a relationship between the incident fluxes of low- and high- dose scans is first determined according to the repeated projection measurements and analysis. Second, the incident flux level of the simulated low-dose scan is generated by properly scaling the incident flux level of high-dose scan via the determined relationship in the first step. Third, the low-dose CT transmission data by energy integrating detection is simulated by adding a statistically independent Poisson noise distribution plus a statistically independent Gaussian noise distribution. Finally, a filtered back-projection (FBP) algorithm is implemented to reconstruct the resultant low-dose CT images. The present low-dose simulation strategy is verified on the simulations and real scans by comparing it with the existing low-dose CT simulation tool. Experimental results demonstrated that the present low-dose CT simulation strategy can generate accurate low-dose CT sinogram data from high-dose scan in terms of qualitative and quantitative measurements
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|a Journal Article
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|a X-ray CT
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|a high-dose
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|a low-dose
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|a simulation
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| 700 |
1 |
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|a Huang, Jing
|e verfasserin
|4 aut
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| 700 |
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|a Bian, Zhaoying
|e verfasserin
|4 aut
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| 700 |
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|a Niu, Shanzhou
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Hua
|e verfasserin
|4 aut
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| 700 |
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|a Feng, Qianjin
|e verfasserin
|4 aut
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1 |
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|a Liang, Zhengrong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Jianhua
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on nuclear science
|d 1988
|g 62(2015), 5 vom: 01. Okt., Seite 2226-2233
|w (DE-627)NLM098149350
|x 0018-9499
|7 nnas
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| 773 |
1 |
8 |
|g volume:62
|g year:2015
|g number:5
|g day:01
|g month:10
|g pages:2226-2233
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