[99mTc]-labelled anti-Programmed Death-Ligand 1 single-domain antibody SPECT/CT: a novel imaging biomarker for myocardial PD-L1 expression oleh Muhummad Sohaib Nazir, Daniel Johnathan Hughes, Gitasha Chand, Kathryn Adamson, Jessica Johnson, Damion Bailey, Victoria Gibson, Hong Hoi Ting, Alexander R. Lyon, Gary J. R. Cook, PECan study group