Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data

Shelan Mahmood; Kjell Erlandsson; Brian Hutton

doi:10.1109/NSSMIC.2008.4774374

Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data

Shelan Mahmood^*, Kjell Erlandsson, Brian Hutton

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

4 Citations (Scopus)

Abstract

The desirability of multiplexing in SPECT acquisition remains controversial. Allowing multiplexing is a way of optimizing system sensitivity, however multiplexing has been found to deteriorate the image quality due to the ambiguity in the origin of the projections. In this paper we explore the system designed specifically for brain SPECT based on multi slitslat (MSS) collimator in which the slit spacing is varied to provide a mix of multiplexed (MX) and non-MX data. The degree of multiplexing for individual slits (DM) is fixed and we vary the fractional number of projections that are multiplexed (FMP). The results showed significant increase in Signal to noise ratio (SNR) due to the reduced noise level in the reconstructed images with insignificant effect on the recovery coefficient (RC) and spatial resolution up to high degrees of multiplexing and with less than 30% non-MX projections. We therefore conclude that multiplexing can be used to increase system sensitivity and therefore reduce noise in the i age quality provided that mixed MX and non-MX data are acquired.

Original language	English
Title of host publication	2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Editors	S. Pillen
Pages	4598-4603
Number of pages	6
DOIs	https://doi.org/10.1109/NSSMIC.2008.4774374
Publication status	Published - 2008
Event	2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany Duration: 19 Oct 2008 → 25 Oct 2008

Other

Other	2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Country/Territory	Germany
City	Dresden
Period	19/10/08 → 25/10/08

Keywords

Slit-slat collimator, multiplexing, image quality, single-photon emission computed tomography (SPECT).

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10.1109/NSSMIC.2008.4774374

Cite this

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title = "Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data",

abstract = "The desirability of multiplexing in SPECT acquisition remains controversial. Allowing multiplexing is a way of optimizing system sensitivity, however multiplexing has been found to deteriorate the image quality due to the ambiguity in the origin of the projections. In this paper we explore the system designed specifically for brain SPECT based on multi slitslat (MSS) collimator in which the slit spacing is varied to provide a mix of multiplexed (MX) and non-MX data. The degree of multiplexing for individual slits (DM) is fixed and we vary the fractional number of projections that are multiplexed (FMP). The results showed significant increase in Signal to noise ratio (SNR) due to the reduced noise level in the reconstructed images with insignificant effect on the recovery coefficient (RC) and spatial resolution up to high degrees of multiplexing and with less than 30% non-MX projections. We therefore conclude that multiplexing can be used to increase system sensitivity and therefore reduce noise in the i age quality provided that mixed MX and non-MX data are acquired.",

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Mahmood, S, Erlandsson, K & Hutton, B 2008, Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data. in S Pillen (ed.), 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008., 4774374, pp. 4598-4603, 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008, Dresden, Germany, 19/10/08. https://doi.org/10.1109/NSSMIC.2008.4774374

Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data. / Mahmood, Shelan; Erlandsson, Kjell; Hutton, Brian.
2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008. ed. / S. Pillen. 2008. p. 4598-4603 4774374.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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Improved reconstructed image quality in aspect system with slit-slat collimation by combination of multiplexed and non-multiplexed data

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