RT Journal Article SR Electronic T1 Approaches to Imaging Immune Activation Using PET JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP jnumed.124.268289 DO 10.2967/jnumed.124.268289 A1 Parihar, Ashwin Singh A1 Pant, Niharika A1 Heidari, Pedram A1 Fong, Lawrence A1 Iravani, Amir YR 2025 UL http://jnm.snmjournals.org/content/early/2025/04/30/jnumed.124.268289.abstract AB This review explores the role of PET in imaging immune activation, particularly in oncology. 18F-FDG is widely used for assessing treatment response to immunotherapies and can demonstrate unique response patterns as well as immune-related adverse events. However, because of the limited specificity of 18F-FDG, newer PET radiopharmaceuticals targeting specific cellular or subcellular components of the immune system have been developed that can provide more precise information. The development of immune-specific PET radiopharmaceuticals offers significant potential for improving immune monitoring in both clinical practice and research.