Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT

Kjell Erlandsson; Margarita Núñez; Declan Kruppa; Brian F. Hutton

doi:10.1109/NSSMIC.2008.4774279

Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT

Kjell Erlandsson^*, Margarita Núñez, Declan Kruppa, Brian F. Hutton

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

The GE Hawkeye-4 is a low-dose CT system mounted on the gantry of a SPECT scanner. With a scanning time of 23 s per full rotation, which corresponds to 4-5 normal breathing cycles, respiratory motion may induce image artifacts in thorax studies. We have developed a method to reduce these artifacts by correcting for the axial component of the respiratory motion, utilizing respiratory phase information concerning the breathing pattern, obtained by the use of a pneumatic beltsystem. The method is based on segmentation of the projection data into subsets corresponding to different motion-amplitudes, followed by generation of low quality, but motion-free image estimates. The method has been tested with simulations based on a digital phantom and also with simulations based on real CT data. Our results show that significant reduction in artifacts can be achieved by correcting for the axial component of the respiratory motion. In conclusion, this is a promising method for reduction of respiratory motion artifacts in a slowly rotating SPECT/CT system.

Original language	English
Title of host publication	2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages	3775-3778
Number of pages	4
DOIs	https://doi.org/10.1109/NSSMIC.2008.4774279
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

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10.1109/NSSMIC.2008.4774279

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title = "Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT",

abstract = "The GE Hawkeye-4 is a low-dose CT system mounted on the gantry of a SPECT scanner. With a scanning time of 23 s per full rotation, which corresponds to 4-5 normal breathing cycles, respiratory motion may induce image artifacts in thorax studies. We have developed a method to reduce these artifacts by correcting for the axial component of the respiratory motion, utilizing respiratory phase information concerning the breathing pattern, obtained by the use of a pneumatic beltsystem. The method is based on segmentation of the projection data into subsets corresponding to different motion-amplitudes, followed by generation of low quality, but motion-free image estimates. The method has been tested with simulations based on a digital phantom and also with simulations based on real CT data. Our results show that significant reduction in artifacts can be achieved by correcting for the axial component of the respiratory motion. In conclusion, this is a promising method for reduction of respiratory motion artifacts in a slowly rotating SPECT/CT system.",

author = "Kjell Erlandsson and Margarita N{\'u}{\~n}ez and Declan Kruppa and Hutton, {Brian F.}",

year = "2008",

doi = "10.1109/NSSMIC.2008.4774279",

language = "English",

isbn = "9781424427154",

pages = "3775--3778",

booktitle = "2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008",

note = "2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 ; Conference date: 19-10-2008 Through 25-10-2008",

}

Erlandsson, K, Núñez, M, Kruppa, D & Hutton, BF 2008, Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT. in 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008., 4774279, pp. 3775-3778, 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008, Dresden, Germany, 19/10/08. https://doi.org/10.1109/NSSMIC.2008.4774279

TY - GEN

T1 - Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT

AU - Erlandsson, Kjell

AU - Núñez, Margarita

AU - Kruppa, Declan

AU - Hutton, Brian F.

PY - 2008

Y1 - 2008

N2 - The GE Hawkeye-4 is a low-dose CT system mounted on the gantry of a SPECT scanner. With a scanning time of 23 s per full rotation, which corresponds to 4-5 normal breathing cycles, respiratory motion may induce image artifacts in thorax studies. We have developed a method to reduce these artifacts by correcting for the axial component of the respiratory motion, utilizing respiratory phase information concerning the breathing pattern, obtained by the use of a pneumatic beltsystem. The method is based on segmentation of the projection data into subsets corresponding to different motion-amplitudes, followed by generation of low quality, but motion-free image estimates. The method has been tested with simulations based on a digital phantom and also with simulations based on real CT data. Our results show that significant reduction in artifacts can be achieved by correcting for the axial component of the respiratory motion. In conclusion, this is a promising method for reduction of respiratory motion artifacts in a slowly rotating SPECT/CT system.

AB - The GE Hawkeye-4 is a low-dose CT system mounted on the gantry of a SPECT scanner. With a scanning time of 23 s per full rotation, which corresponds to 4-5 normal breathing cycles, respiratory motion may induce image artifacts in thorax studies. We have developed a method to reduce these artifacts by correcting for the axial component of the respiratory motion, utilizing respiratory phase information concerning the breathing pattern, obtained by the use of a pneumatic beltsystem. The method is based on segmentation of the projection data into subsets corresponding to different motion-amplitudes, followed by generation of low quality, but motion-free image estimates. The method has been tested with simulations based on a digital phantom and also with simulations based on real CT data. Our results show that significant reduction in artifacts can be achieved by correcting for the axial component of the respiratory motion. In conclusion, this is a promising method for reduction of respiratory motion artifacts in a slowly rotating SPECT/CT system.

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U2 - 10.1109/NSSMIC.2008.4774279

DO - 10.1109/NSSMIC.2008.4774279

M3 - Conference proceeding contribution

AN - SCOPUS:67649148022

SN - 9781424427154

SP - 3775

EP - 3778

BT - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008

T2 - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008

Y2 - 19 October 2008 through 25 October 2008

ER -

Reduction of CT artifacts due to respiratory motion in a slowly rotating SPECT/CT

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