Development of a SPECT system for industrial process flow measurement using diverging collimators

Jang Guen Park, Sung Hee Jung, Jong Bum Kim, Jinho Moon, Chan Hyeong Kim

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)133-141
Number of pages9
JournalNuclear Technology
Volume192
Issue number2
DOIs
StatePublished - 2015 Nov

Fingerprint

Single photon emission computed tomography
flow measurement
Flow measurement
collimators
tomography
multiphase flow
Multiphase flow
photons
collimation
distribution (property)
image resolution
Image resolution
Radioisotopes
Flow patterns
artifacts
flow distribution
Visualization
costs
Imaging techniques
Costs

Keywords

  • Diverging collimator
  • Industrial SPECT
  • Industrial process diagnosis

Cite this

Park, Jang Guen ; Jung, Sung Hee ; Kim, Jong Bum ; Moon, Jinho ; Kim, Chan Hyeong. / Development of a SPECT system for industrial process flow measurement using diverging collimators. In: Nuclear Technology. 2015 ; Vol. 192, No. 2. pp. 133-141.
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Development of a SPECT system for industrial process flow measurement using diverging collimators. / Park, Jang Guen; Jung, Sung Hee; Kim, Jong Bum; Moon, Jinho; Kim, Chan Hyeong.

In: Nuclear Technology, Vol. 192, No. 2, 11.2015, p. 133-141.

Research output: Contribution to journalArticle

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