Article (Scientific journals)
Validation of a combined image derived input function and venous sampling approach for the quantification of [18F]GE-179 PET binding in the brain.
Galovic, Marian; Erlandsson, Kjell; Fryer, Tim D et al.
2021In NeuroImage, 237, p. 118194
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Keywords :
Input function; NMDA receptor; Positron emission tomography; Radiopharmaceuticals; Receptors, N-Methyl-D-Aspartate; Adult; Brain Injuries, Traumatic/diagnostic imaging; Brain Injuries, Traumatic/metabolism; Female; Humans; Male; Middle Aged; Neuroimaging/methods; Neuroimaging/standards; Positron-Emission Tomography/methods; Positron-Emission Tomography/standards; Radiopharmaceuticals/pharmacokinetics; Receptors, N-Methyl-D-Aspartate/metabolism; Reproducibility of Results; Veins; Brain Injuries, Traumatic; Neuroimaging; Positron-Emission Tomography; Neurology; Cognitive Neuroscience
Abstract :
[en] Blood-based kinetic analysis of PET data relies on an accurate estimate of the arterial plasma input function (PIF). An alternative to invasive measurements from arterial sampling is an image-derived input function (IDIF). However, an IDIF provides the whole blood radioactivity concentration, rather than the required free tracer radioactivity concentration in plasma. To estimate the tracer PIF, we corrected an IDIF from the carotid artery with estimates of plasma parent fraction (PF) and plasma-to-whole blood (PWB) ratio obtained from five venous samples. We compared the combined IDIF+venous approach to gold standard data from arterial sampling in 10 healthy volunteers undergoing [18F]GE-179 brain PET imaging of the NMDA receptor. Arterial and venous PF and PWB ratio estimates determined from 7 patients with traumatic brain injury (TBI) were also compared to assess the potential effect of medication. There was high agreement between areas under the curves of the estimates of PF (r = 0.99, p<0.001), PWB ratio (r = 0.93, p<0.001), and the PIF (r = 0.92, p<0.001) as well as total distribution volume (VT) in 11 regions across the brain (r = 0.95, p<0.001). IDIF+venous VT had a mean bias of -1.7% and a comparable regional coefficient of variation (arterial: 21.3 ± 2.5%, IDIF+venous: 21.5 ± 2.0%). Simplification of the IDIF+venous method to use only one venous sample provided less accurate VT estimates (mean bias 9.9%; r = 0.71, p<0.001). A version of the method that avoids the need for blood sampling by combining the IDIF with population-based PF and PWB ratio estimates systematically underestimated VT (mean bias -20.9%), and produced VT estimates with a poor correlation to those obtained using arterial data (r = 0.45, p<0.001). Arterial and venous blood data from 7 TBI patients showed high correlations for PF (r = 0.92, p = 0.003) and PWB ratio (r = 0.93, p = 0.003). In conclusion, the IDIF+venous method with five venous samples provides a viable alternative to arterial sampling for quantification of [18F]GE-179 VT.
Disciplines :
Radiology, nuclear medicine & imaging
Author, co-author :
Galovic, Marian;  Department of Neurology, Clinical Neuroscience Center, University Hospital Zurich, Zurich, Switzerland, Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, University College London, London, UK, MRI Unit, Chalfont Centre for Epilepsy, UK
Erlandsson, Kjell;  Institute of Nuclear Medicine, University College London, London, UK
Fryer, Tim D;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Hong, Young T;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Manavaki, Roido;  Department of Radiology, University of Cambridge, Cambridge, UK
Sari, Hasan;  Institute of Nuclear Medicine, University College London, London, UK, Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
Chetcuti, Sarah;  Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, UK
Thomas, Benjamin A;  Institute of Nuclear Medicine, University College London, London, UK
Fisher, Martin;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Sephton, Selena;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Canales, Roberto;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Russell, Joseph J;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Sander, Kerstin;  Centre for Radiopharmaceutical Chemistry, University College London, London, UK
Årstad, Erik;  Centre for Radiopharmaceutical Chemistry, University College London, London, UK
Aigbirhio, Franklin I;  Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
Groves, Ashley M;  Institute of Nuclear Medicine, University College London, London, UK
Duncan, John S;  Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, University College London, London, UK, MRI Unit, Chalfont Centre for Epilepsy, UK
Thielemans, Kris;  Institute of Nuclear Medicine, University College London, London, UK
Hutton, Brian F;  Institute of Nuclear Medicine, University College London, London, UK
Coles, Jonathan P;  Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, UK
Koepp, Matthias J;  Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, University College London, London, UK, MRI Unit, Chalfont Centre for Epilepsy, UK. Electronic address: m.koepp@ucl.ac.uk
Gendron, Thibault  ;  UCL - University College London [US] > Department of Chemistry
More authors (12 more) Less
Language :
English
Title :
Validation of a combined image derived input function and venous sampling approach for the quantification of [18F]GE-179 PET binding in the brain.
Publication date :
15 August 2021
Journal title :
NeuroImage
ISSN :
1053-8119
eISSN :
1095-9572
Publisher :
Academic Press Inc., United States
Volume :
237
Pages :
118194
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
MRC - Medical Research Council [GB]
Funding text :
JPC & FIA report a UK Medical Research Council (MRC) grant (MRC Industry Collaboration Agreement (MR/K02308X/1)), and MK, JPC, TDF & FIA report a UK MRC grant (Developmental Pathway Funding Scheme (MR/L013215/1)). JPC reports a British Journal of Anaesthesia/Royal College of Anaesthetists grant from the National Institute of Academic Anaesthesia. Other authors have nothing to disclose.This work has been funded by an MRC PET Neuroscience programme grant (Training and Novel Probes Programme in PET Neurochemistry – MR/K02308X/1 ) and by an MRC Developmental Pathway Funding Scheme grant ( MR/L013215/1 ).This work was supported by researchers at the National Institute for Health Research (NIHR) Cambridge Biomedical Research Centre. Cambridge University Hospitals NHS Foundation Trust and the University of Cambridge acted as the sponsor for this study, with responsibility for study conduct and management. We thank all the participants for contributing to this study.Data and the MATLAB scripts used in this publication are available upon reasonable request from the authors, whereas a formal data sharing agreement will be required. This work has been funded by an MRC PET Neuroscience programme grant (Training and Novel Probes Programme in PET Neurochemistry ? MR/K02308X/1) and by an MRC Developmental Pathway Funding Scheme grant (MR/L013215/1). JPC & FIA report a UK Medical Research Council (MRC) grant (MRC Industry Collaboration Agreement (MR/K02308X/1)), and MK, JPC, TDF & FIA report a UK MRC grant (Developmental Pathway Funding Scheme (MR/L013215/1)). JPC reports a British Journal of Anaesthesia/Royal College of Anaesthetists grant from the National Institute of Academic Anaesthesia. Other authors have nothing to disclose. This work was supported by researchers at the National Institute for Health Research (NIHR) Cambridge Biomedical Research Centre. Cambridge University Hospitals NHS Foundation Trust and the University of Cambridge acted as the sponsor for this study, with responsibility for study conduct and management. We thank all the participants for contributing to this study. The authors thank the staff at GE Healthcare, in particular William Trigg, Sajinder Kaur Luthra and Jo Stevens, for their help and support during this study. This work was undertaken in part at UCL/UCLH which receives support from the NIHR University College London Hospitals Biomedical Research Centre. BDB was also supported by the EPSRC-funded UCL Centre for Doctoral Training in Medical Imaging.This work was undertaken in part at UCL/UCLH which receives support from the NIHR University College London Hospitals Biomedical Research Centre. BDB was also supported by the EPSRC-funded UCL Centre for Doctoral Training in Medical Imaging.
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