Technological progress has propelled Positron Emission Tomography from a specialized research tool to a cornerstone of modern clinical imaging. The past two decades have seen revolutionary advancements in detector technology, image reconstruction algorithms, and hybrid imaging integration.

Digital PET detectors have replaced conventional photomultiplier tubes, offering improved timing resolution and sensitivity. This allows for sharper images, shorter scan durations, and reduced radiotracer doses. Patients benefit from faster procedures with lower radiation exposure.

Time-of-flight (TOF) PET technology enhances image quality by measuring the precise time difference between gamma photon detections, improving localization accuracy. TOF-PET has become standard in clinical imaging due to its superior signal-to-noise ratio and efficiency.

Hybrid imaging systems such as PET/CT and PET/MRI have revolutionized diagnostic workflows by combining metabolic and anatomical data. PET/CT remains a mainstay in oncology, while PET/MRI is gaining traction in neurological and musculoskeletal imaging due to its superior contrast resolution.