Schor, R A Regional ventilation studies with Kr-81m and Xe-133: a comparative analysis. [electronic resource] - Journal of nuclear medicine : official publication, Society of Nuclear Medicine Apr 1978 - 348-53 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0161-5505 Subjects--Topical Terms: HumansKryptonLung Diseases, Obstructive--diagnosisPulmonary Embolism--diagnosisRadioisotopesRespiratory Function TestsXenon Radioisotopes