RT Journal Article SR Electronic T1 Commercially competitive vendor-agnostic image reconstruction could be a leap forward for PET harmonization JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP jnumed.121.263421 DO 10.2967/jnumed.121.263421 A1 Adam L. Kesner YR 2021 UL http://jnm.snmjournals.org/content/early/2021/11/04/jnumed.121.263421.abstract AB