Assessment of motion correction in dynamic rubidium-82 cardiac PET with and without frame-by-frame adjustment of attenuation maps for calculation of myocardial blood flow.

Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology
Ian S ArmstrongParthiban Arumugam

Abstract

Patient motion during pharmacological stressing can have substantial impact on myocardial blood flow (MBF) estimated from dynamic PET. This work evaluated a motion correction algorithm with and without adjustment of the PET attenuation map. Frame-by-frame motion correction was performed by three users on 30 rubidium-82 studies. Data were divided equally into three groups of motion severity [mild (M1), moderate (M2) and severe (M3)]. MBF data were compared for non-motion corrected (NC), motion-corrected-only (MC) and with adjustment of the attenuation map (MCAC). Percentage differences of MBF were calculated in the coronary territories and 17-segment polar plots. Polar plots of spill-over were also generated from the data. Median differences of 23% were seen in the RCA and 18% for the LAD in the M3 category for MC vs NC images. Differences for MCAC vs MC images were considerably smaller and typically < 10%. Spill-over plots for MC and MCAC were notably more uniform compared with NC images. Motion correction for dynamic rubidium data is desirable for future MBF software updates. Adjustment of the PET attenuation map results in only marginal differences and therefore is unlikely to be an essential requirement. Assessing the unifor...Continue Reading

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Citations

Sep 22, 2019·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Martin Lyngby Lassen, Piotr J Slomka
Oct 28, 2019·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Alexis Poitrasson-Rivière, Venkatesh L Murthy
May 7, 2020·European Journal of Nuclear Medicine and Molecular Imaging·Martin Lyngby LassenPiotr J Slomka
May 23, 2020·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Ian S ArmstrongParthiban Arumugam
Oct 18, 2020·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Piotr J SlomkaErnest V Garcia
Jan 15, 2021·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Alexis Poitrasson-Rivière, Venkatesh L Murthy
Nov 3, 2020·European Journal of Nuclear Medicine and Molecular Imaging·Roberto SciagràUNKNOWN Cardiovascular Committee of the European Association of Nuclear Medicine (EANM)
Feb 21, 2021·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Ian S ArmstrongParthiban Arumugam
Mar 23, 2021·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·Benjamin C Lee
Oct 18, 2020·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Piotr J SlomkaErnest V Garcia
Jun 9, 2021·Physics in Medicine and Biology·Andre Z Kyme, Roger R Fulton

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