@article {Valind1144, author = {Sven O. Valind and Christopher G. Rhodes and Bj{\"o}rn Jonson}, title = {Quantification of Regional Ventilation in Humans Using a Short-Lived Radiotracer{\textemdash} Theoretical Evaluation of the Steady-State Model}, volume = {28}, number = {7}, pages = {1144--1154}, year = {1987}, publisher = {Society of Nuclear Medicine}, issn = {0161-5505}, URL = {https://jnm.snmjournals.org/content/28/7/1144}, eprint = {https://jnm.snmjournals.org/content/28/7/1144.full.pdf}, journal = {Journal of Nuclear Medicine} }