The National Institutes of Health (NIH) is inviting research grant applications for the development and application of novel positron emission tomography (PET) and single photon emission computed tomography (SPECT) imaging ligands aimed at enhancing drug discovery and understanding central nervous system (CNS) disorders. This funding opportunity seeks to stimulate research that evaluates new radioligands capable of assessing molecular targets related to CNS disorders, thereby contributing to the understanding of disease mechanisms and the evaluation of therapeutic candidates. The initiative is particularly significant for advancing neuroimaging techniques, especially in the context of mental health and aging-related conditions. Applications are due starting January 5, 2025, with a maximum project period of five years, and interested parties 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-25-036.html.