TSPO and temporal arteritis: It was later found that TSPO targeted imaging could be utilized for the imaging of non-neuronal inflammatory diseases such as rheumatoid arthritis (RA), atherosclerosis, Takayasu arteritis (TAK), systemic lupus erythematosus (SLE), and GCA (88, 94, 98–100, 103, 106, 185, 190, 193).