Accurate Attenuation Correction for Algebraic Reconstruction Technique in SPECT. Journal of Computational Mathematics, [S. l.], v. 28, n. 3, p. 401–417, 2018. DOI: 10.4208/jcm.2009.10-m2873. Disponível em: https://global-sci.com/index.php/JCM/article/view/11991. Acesso em: 6 dec. 2025.