RT Journal Article SR Electronic T1 Measurements of Regional Ventilation Pulmonary Gas Volume: Theory and Error Analysis with Special Reference to Positron Emission Tomography JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1937 OP 1944 VO 32 IS 10 A1 Sven O. Valind A1 Christopher G. Rhodes A1 Lars H. Brudin A1 Terry Jones YR 1991 UL http://jnm.snmjournals.org/content/32/10/1937.abstract AB