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Comparison of Dual-Window and Convolution Scatter Correction Techniques using the Monte Carlo Method

Ljungberg, Michael LU ; Msaki, P and Strand, Sven-Erik LU (1990) In Physics in Medicine and Biology 35(8). p.1099-1110
Abstract
In order to improve the accuracy of SPECT measurements, correction methods have to be used. Two different scatter correction techniques-the dual-window (DW) technique and the convolution (CV) technique-were compared using projection data, simulated by the Monte Carlo method. Comparison with measured data was also made to validate the accuracy of the Monte Carlo code. The main goal was to investigate how well the estimated scatter distributions, using these two scatter correction techniques, fit the simulated, true scatter distribution of the projection data obtained in the photo-peak window. The scatter distributions predicted by the CV technique were found to be consistently lower than those simulated by the Monte Carlo method in the part... (More)
In order to improve the accuracy of SPECT measurements, correction methods have to be used. Two different scatter correction techniques-the dual-window (DW) technique and the convolution (CV) technique-were compared using projection data, simulated by the Monte Carlo method. Comparison with measured data was also made to validate the accuracy of the Monte Carlo code. The main goal was to investigate how well the estimated scatter distributions, using these two scatter correction techniques, fit the simulated, true scatter distribution of the projection data obtained in the photo-peak window. The scatter distributions predicted by the CV technique were found to be consistently lower than those simulated by the Monte Carlo method in the part of the scatter distribution corresponding to the locations of the sources. The DW technique gives lower estimates of the scatter distribution. However, the scatter distribution estimated by the DW technique and the simulated scatter distribution bear a close resemblance to each other. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics in Medicine and Biology
volume
35
issue
8
pages
1099 - 1110
publisher
IOP Publishing
external identifiers
  • scopus:0025303287
ISSN
1361-6560
DOI
10.1088/0031-9155/35/8/006
language
English
LU publication?
yes
id
1a3eefce-443c-4db0-92ef-a37bc4c39f0c (old id 1105274)
date added to LUP
2008-08-05 12:04:50
date last changed
2017-05-28 03:31:46
@article{1a3eefce-443c-4db0-92ef-a37bc4c39f0c,
  abstract     = {In order to improve the accuracy of SPECT measurements, correction methods have to be used. Two different scatter correction techniques-the dual-window (DW) technique and the convolution (CV) technique-were compared using projection data, simulated by the Monte Carlo method. Comparison with measured data was also made to validate the accuracy of the Monte Carlo code. The main goal was to investigate how well the estimated scatter distributions, using these two scatter correction techniques, fit the simulated, true scatter distribution of the projection data obtained in the photo-peak window. The scatter distributions predicted by the CV technique were found to be consistently lower than those simulated by the Monte Carlo method in the part of the scatter distribution corresponding to the locations of the sources. The DW technique gives lower estimates of the scatter distribution. However, the scatter distribution estimated by the DW technique and the simulated scatter distribution bear a close resemblance to each other.},
  author       = {Ljungberg, Michael and Msaki, P and Strand, Sven-Erik},
  issn         = {1361-6560},
  language     = {eng},
  number       = {8},
  pages        = {1099--1110},
  publisher    = {IOP Publishing},
  series       = {Physics in Medicine and Biology},
  title        = {Comparison of Dual-Window and Convolution Scatter Correction Techniques using the Monte Carlo Method},
  url          = {http://dx.doi.org/10.1088/0031-9155/35/8/006},
  volume       = {35},
  year         = {1990},
}