RT Journal Article SR Electronic T1 Quantification of Regional Ventilation in Humans Using a Short-Lived Radiotracer— Theoretical Evaluation of the Steady-State Model JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1144 OP 1154 VO 28 IS 7 A1 Sven O. Valind A1 Christopher G. Rhodes A1 Björn Jonson YR 1987 UL http://jnm.snmjournals.org/content/28/7/1144.abstract AB