Hyperpolarized gases in magnetic resonance: a new tool for functional imaging of the lung. Swiss Medical Weekly, [S. l.], v. 131, n. 3536, p. 503–509, 2001. DOI: 10.4414/smw.2001.09776. Disponível em: https://www.smw.ch/index.php/smw/article/view/101. Acesso em: 19 oct. 2025.