Development of a Normative Database for Rheumatoid Arthritis (RA) Imaging With Tc99m Tilmanocept

This is a prospective, open-label, multicenter, single-dose study designed to develop a normative database of TUVjoint in HCs and to assess the feasibility of qualitative and quantitative SPECT/CT assessments in HCs and subjects with active RA. This study is stratified into 2 arms. Arm 1 is comprised of HCs and Arm 2 is comprised of HCs and clinically diagnosed RA subjects on stable treatment.