Microtomography with sandwich detectors for small-animal bone imaging

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An x-ray radiographic system consisting of two detectors in tandem, or a sandwich detector, can produce dual-energy image from a single-shot exposure. Subtraction of two images obtained from the two detectors can produce a sharper image through an unsharp masking effect if the two images are formed at different spatial resolutions. This is indeed possible by incorporating different thicknesses of x-ray conversion layers in the detectors. In this study, we have developed a microtomography system with a sandwich detector in pursuit of high-resolution bone-enhanced small-animal imaging. The results show that the bone-enhanced images reconstructed from the dual-energy projection data provide higher visibility of bone details than the conventionally reconstructed images. The microtomography with the single-shot dual-energy sandwich detector will be useful for the high-resolution bone-enhanced small-animal imaging.
Publisher
IOP PUBLISHING LTD
Issue Date
2016-10
Language
English
Article Type
Article
Keywords

MICRO-COMPUTED TOMOGRAPHY; CT; PERFORMANCE; SYSTEMS

Citation

JOURNAL OF INSTRUMENTATION, v.11

ISSN
1748-0221
DOI
10.1088/1748-0221/11/10/P10011
URI
http://hdl.handle.net/10203/218328
Appears in Collection
NE-Journal Papers(저널논문)
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