RT Journal Article SR Electronic T1 Fibroblast Activation Protein Inhibitor Imaging in Nonmalignant Diseases: A New Perspective for Molecular Imaging JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1786 OP 1792 DO 10.2967/jnumed.122.264205 VO 63 IS 12 A1 Christian Schmidkonz A1 Torsten Kuwert A1 Armin Atzinger A1 Michael Cordes A1 Georg Schett A1 Andreas Ramming A1 Theresa Götz YR 2022 UL http://jnm.snmjournals.org/content/63/12/1786.abstract AB Fibroblast activation protein-α (FAP-α) is a type II transmembrane glycoprotein that is overexpressed in activated fibroblasts such as those in the stroma of tumors or in the fibrotic processes accompanying various benign diseases. The recent development and clinical implementation of radiolabeled quinolone-based tracers suitable for PET that act as FAP inhibitors (FAPIs) have opened a new perspective in molecular imaging. Although multiple studies have investigated the use of FAPI imaging in cancer, evidence concerning its use in nonmalignant diseases is still scarce. Herein, we provide a comprehensive review of FAPI imaging in nonmalignant diseases to clarify the current and potential role of this class of molecules in nuclear medicine.