In this issue of PET Clinics, guest editors Drs. Abass Alavi, Habib Zaidi, and Suleman Surti bring their considerable expertise to the topic of Advances in Organ-specific PET Instrumentation and Their Clinical Applications. Top experts cover key topics such as the increasing use of silicon photomultiplier (SiPM) technology, advances in depth-of-interaction (DOI) and time-of-flight (TOF) PET detectors, the use of artificial intelligence technologies for detector development; and more.