Recent technological advances in positron emission tomography/computed tomography (PET/CT) scanner design have revolutionized imaging capabilities for lymphoma patients. The development of long-axial field-of-view (LAFOV) and total-body (TB) PET/CT scanners represents a paradigm shift in nuclear medicine imaging, offering unprecedented improvements in image quality, sensitivity, and time-of-flight resolution. These new-generation scanners, featuring extended axial field-of-view coverage greater than 100 cm, provide substantial benefits for both Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL) imaging throughout the entire disease history. The enhanced sensitivity of LAFOV PET/CT systems enables significant reductions in administered injected activities and shortened acquisition times while maintaining or improving image quality compared to conventional PET-scanners. Furthermore, LAFOV PET facilitates novel imaging approaches including dynamic acquisitions of clinically relevant areas such as the large vessels, parametric imaging, and advanced radiomics analysis. This chapter explores the technical capabilities of new scanner technologies and their specific applications in lymphoma staging, restaging, interim assessment, end-of-treatment evaluation, and surveillance imaging, while addressing both current achievements and future opportunities in this rapidly evolving field.