The Effect of the Film-to-Focus Distance (FFD) Method on the Optical Density of the Organs and Anatomical Interest Parts in the Thoracic Cage. Nigerian Journal of Applied Physics, [S. l.], v. 1, n. 1, p. 40–47, 2025. DOI: 10.62292/njap-v1i1-2025-19. Disponível em: https://njap.nipngr.org/index.php/njap/article/view/19. Acesso em: 5 nov. 2025.