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DEVELOPMENT OF A SPECT SYSTEM FOR INDUSTRIAL PROCESS FLOW MEASUREMENT USING DIVERGING COLLIMATORS

Title
DEVELOPMENT OF A SPECT SYSTEM FOR INDUSTRIAL PROCESS FLOW MEASUREMENT USING DIVERGING COLLIMATORS
Author
김찬형
Keywords
industrial SPECT; industrial process diagnosis; diverging collimator
Issue Date
2015-11
Publisher
AMER NUCLEAR SOC
Citation
NUCLEAR TECHNOLOGY, v. 192, NO 2, Page. 133-141
Abstract
In industrial processes where multiphase flows are frequently encountered, it is important to examine the phase distribution and flow pattern to optimize process efficiency, safe operation, and cost savings. One of the most suitable techniques of industrial-process flow-dynamics visualization is the single photon emission computed tomography (SPECT) system, which provides, by means of a process-system-injected radioisotope source, cross-sectional images of the process flow. Obtaining reliable SPECT imaging results for a multiphase flow system, however, remains a significant challenge. In the present study, the use of a diverging collimator for improvement of industrial SPECT system performance is proposed. The advantages of the diverging-collimation industrial SPECT system as compared with a previous parallel-collimation version can be summarized as follows: (a) significant reduction of edge artifacts on a detection-efficiency map, and 19% improvement of average detection efficiency; (b) 36% improvement of image resolution; (c) accurate source region reconstruction even with the source positioned farther from the object's center; and (d) a reduced system size.
URI
http://www.tandfonline.com/doi/abs/10.13182/NT15-16http://hdl.handle.net/20.500.11754/28969
ISSN
0029-5450; 1943-7471
DOI
10.13182/NT15-16
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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