The National Institutes of Health (NIH) has announced a funding opportunity for the development and application of positron emission tomography (PET) and single photon emission computed tomography (SPECT) imaging ligands, aimed at enhancing research in central nervous system (CNS) disorders. This grant, under the R01 Research Project Grant mechanism, invites applications focused on the preclinical development of novel radioligands to support drug discovery and pathophysiological studies, with an emphasis on understanding brain function and evaluating therapeutic candidates. The program is particularly significant for advancing imaging capabilities related to mental health and age-related diseases, and it encourages collaboration between academia and industry while prohibiting clinical trial proposals. Interested applicants must submit their proposals by May 7, 2026, and can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries. More details can be found at the provided link: https://grants.nih.gov/grants/guide/pa-files/PAR-23-165.html.