Attenuation map estimation without transmission scanning using measured scatter data

Sarah C. Cade; Simon Arridge; Martyn J. Evans; Brian F. Hutton

doi:10.1109/NSSMIC.2011.6155246

Attenuation map estimation without transmission scanning using measured scatter data

Sarah C. Cade^*, Simon Arridge, Martyn J. Evans, Brian F. Hutton

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Attenuation correction is essential for reliable interpretation of SPECT images, however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission and emission measurements. A method has been developed to use scatter data measured at the same time as the emission measurements to estimate an attenuation map. The algorithm iterates through a dual estimation process, fixing estimated activity and attenuation respectively. The work presented here improves the accuracy of the previously described scatter model. The possibility of using an ordered subsets technique to accelerate the reconstruction algorithm is considered and the robustness of the reconstruction algorithm to errors in the estimation of higher order scatter is investigated.

Original language	English
Title of host publication	2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Pages	2657-2663
Number of pages	7
DOIs	https://doi.org/10.1109/NSSMIC.2011.6155246
Publication status	Published - 2012
Event	2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 - Valencia, Spain Duration: 23 Oct 2011 → 29 Oct 2011

Other

Other	2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Country/Territory	Spain
City	Valencia
Period	23/10/11 → 29/10/11

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10.1109/NSSMIC.2011.6155246

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@inproceedings{92c2e1308c1745d1aa9d772a47c97206,

title = "Attenuation map estimation without transmission scanning using measured scatter data",

abstract = "Attenuation correction is essential for reliable interpretation of SPECT images, however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission and emission measurements. A method has been developed to use scatter data measured at the same time as the emission measurements to estimate an attenuation map. The algorithm iterates through a dual estimation process, fixing estimated activity and attenuation respectively. The work presented here improves the accuracy of the previously described scatter model. The possibility of using an ordered subsets technique to accelerate the reconstruction algorithm is considered and the robustness of the reconstruction algorithm to errors in the estimation of higher order scatter is investigated.",

author = "Cade, {Sarah C.} and Simon Arridge and Evans, {Martyn J.} and Hutton, {Brian F.}",

year = "2012",

doi = "10.1109/NSSMIC.2011.6155246",

language = "English",

isbn = "9781467301183",

pages = "2657--2663",

booktitle = "2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011",

note = "2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 ; Conference date: 23-10-2011 Through 29-10-2011",

}

Cade, SC, Arridge, S, Evans, MJ & Hutton, BF 2012, Attenuation map estimation without transmission scanning using measured scatter data. in 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011., 6155246, pp. 2657-2663, 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011, Valencia, Spain, 23/10/11. https://doi.org/10.1109/NSSMIC.2011.6155246

TY - GEN

T1 - Attenuation map estimation without transmission scanning using measured scatter data

AU - Cade, Sarah C.

AU - Arridge, Simon

AU - Evans, Martyn J.

AU - Hutton, Brian F.

PY - 2012

Y1 - 2012

N2 - Attenuation correction is essential for reliable interpretation of SPECT images, however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission and emission measurements. A method has been developed to use scatter data measured at the same time as the emission measurements to estimate an attenuation map. The algorithm iterates through a dual estimation process, fixing estimated activity and attenuation respectively. The work presented here improves the accuracy of the previously described scatter model. The possibility of using an ordered subsets technique to accelerate the reconstruction algorithm is considered and the robustness of the reconstruction algorithm to errors in the estimation of higher order scatter is investigated.

AB - Attenuation correction is essential for reliable interpretation of SPECT images, however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission and emission measurements. A method has been developed to use scatter data measured at the same time as the emission measurements to estimate an attenuation map. The algorithm iterates through a dual estimation process, fixing estimated activity and attenuation respectively. The work presented here improves the accuracy of the previously described scatter model. The possibility of using an ordered subsets technique to accelerate the reconstruction algorithm is considered and the robustness of the reconstruction algorithm to errors in the estimation of higher order scatter is investigated.

UR - http://www.scopus.com/inward/record.url?scp=84858668827&partnerID=8YFLogxK

U2 - 10.1109/NSSMIC.2011.6155246

DO - 10.1109/NSSMIC.2011.6155246

M3 - Conference proceeding contribution

SN - 9781467301183

SP - 2657

EP - 2663

BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011

T2 - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011

Y2 - 23 October 2011 through 29 October 2011

ER -

Attenuation map estimation without transmission scanning using measured scatter data

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