Feasibility study on many-view under-sampling technique for low-dose computed tomography

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We proposed a novel scanning method for low-dose computed tomography (CT) that uses an oscillating multi-slit collimator between the x-ray source and the patient. It can be thought as a realization of sparse data sampling that does not require a fast x-ray power switching. A simulation study was performed based on experimentally acquired microCT data of a mouse to demonstrate the feasibility of the proposed method. A numerical collimation was designed to leave only one-fourth of each projection data for use in image reconstruction. A total-variation minimization algorithm was implemented for image reconstruction from the sparely sampled data. We have successfully shown that the proposed method provides a viable option to low-dose CT. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.8.080501]
Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Issue Date
2012-08
Language
English
Article Type
Article
Keywords

IMAGE-RECONSTRUCTION; CT

Citation

OPTICAL ENGINEERING, v.51, no.8

ISSN
0091-3286
DOI
10.1117/1.OE.51.8.080501
URI
http://hdl.handle.net/10203/93771
Appears in Collection
NE-Journal Papers(저널논문)
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