RT Journal Article SR Electronic T1 Quantitative Evaluation of Regional Pulmonary Ventilation Using PET and Nitrogen-13 Gas JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 268 OP 273 VO 27 IS 2 A1 Michio Senda A1 Kiyoshi Murata A1 Harumi Itoh A1 Yoshiharu Yonekura A1 Kanji Torizuka YR 1986 UL http://jnm.snmjournals.org/content/27/2/268.abstract AB