NDLI: Single-shot dual-energy x-ray imaging with a fl at-panel sandwich detector for preclinical imaging

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Single-shot dual-energy x-ray imaging with a fl at-panel sandwich detector for preclinical imaging

Content Provider	Semantic Scholar
Author	Han, Jong Chul Kim, Ho Kyung Yun, Seungman Youn, Hanbean Kam, Soohwa Tanguay, Jesse
Copyright Year	2014
Abstract	We describe a multi-layer (“sandwich”) configuration detector consisting of two x-ray imaging flat-panel detectors for single-shot (single-kV) dual-energy imaging. An intermediate copper filter is used to increase spectral separation between the two detectors to improve contrast at the expense of image noise. Monte Carlo and cascaded-systems analyses of the signal and noise performance are described that quantify performance characteristics. Image quality of dual-energy images obtained from a prototype sandwich-detector system is evaluated using a figure of merit (FOM), defined as the squared contrast-tonoise ratio normalized by x-ray exposure for a mouse phantom for preclinical imaging. Demonstration dual-energy bone and soft-tissues images of a postmortem mouse are obtained using the prototype system. While the FOM with the single-shot detector is lower than that achieved using a conventional dual-shot (dual-kV) method, the single-shot approach may be preferable when imaging speed or insensitivity to motion artifacts is a primary concern. © 2014 Elsevier B.V. All rights reserved.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://bml.pusan.ac.kr/Publication/PDF/IntJor/065_cap_14_v14_n12_p1734.pdf
Language	English
Access Restriction	Open
Subject Keyword	Autopsy Body tissue Bone Tissue Computer mouse Conflict (Psychology) Detectors Diagnostic radiologic examination Dual Flat panel detector Flat panel display Flumazenil Image noise Image quality Layer (electronics) Manuscripts Monte Carlo method Morphologic artifacts Numerous Phantom reference Phantoms, Imaging Preclinical imaging Prototype Radiographic imaging procedure Radiography
Content Type	Text
Resource Type	Article

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