Optimisation of the air fraction correction for lung PET/CT: addressing resolution mismatch.

"Declarations Ethics approval and consent to participateInstitutional Review Board permission and informed patient consent were obtained. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding FL is completing a PhD with funding from an EPSRC Industrial CASE award (EP/T517628/1), the UK National Physical Laboratory (NPL) through the National Measurement System Programmes Unit of the UK’s Department of Business, Energy and Industrial Strategy, GlaxoSmithKline (BIDS3000035300) and the University College London (UCL) EPSRC Centre for Doctoral Training in Intelligent, Integrated Imaging in Healthcare (i4health; EP/S021930/1). The Open Source software STIR and SIRF is developed with support from UKRI EPSRC (EP/T026693/1). The authors acknowledge funding support from GlaxoSmithKline (BIDS3000030921) and research support from the National Institute for Health Research, University College London Hospitals Biomedical Research Centre."