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Convolution-subtraction technique to compensate for downscatter effects in simultaneous Tl-201/Tc-99m cardiac SPECT

  • Lin Qian(corresponding author)
    ,
  • Zong Jian Cao
*Corresponding author for this work
Scholary Output:
Contribution to conference
Paper
 Peer-review

Related Event

Title

Proceedings of the 1997 IEEE Nuclear Science Symposium

Event type

Other

Date

11/09/1997 - 11/15/1997

Location

Albuquerque, NM, USA

Abstract

A convolution-subtraction method to remove the downscatter counts in the 70 keV projection data is proposed. First, the scatter response function (SRF) is derived by fitting the Monte Carlo simulated downscatter data acquired in the 70 keV window for Tc-99m point source located in a uniform elliptical cylinder. Then, the derived SRF is convolved with the reconstructed 140 keV image to obtain the spatial distribution of downscatter counts in the 70 keV window. Finally, the downscatter distribution is subtracted from the 70 keV data to obtain the compensated data.

Publication Information

Output type

Scholary Output:
Contribution to conference
Paper
 Peer-review

Original language

English (US)

Pages from-to (Number of pages)

Pages 1274-1278 (5 pages)

Publication milestones

  • Published - 1997

Publication status

Published - 1997

Publication IDs

  • Scopus: 0031387584

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Fractional count
1
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0.50
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0.50
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1
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1
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Author count
2
SciVal
Paper percentile
24