Gallium-68 (68Ga) is characterized by relatively high positron energy compared to Fluorine-18 (18F). causing substantial image quality degradation. Furthermore. the presence of statistical noise can further degrade image quality. https://igesdys8kifok.tokka-blog.com/35177908/a-review-of-research-methods-on-the-coupling-relationship-between-urban-rail-transit-and-urban-space-revealing-spatiotemporal-relationships-through-big-data