RT Journal Article SR Electronic T1 Measurement of Regional Ventilation and Lung Perfusion with Xe-133—Reply JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1187 OP 1188 VO 19 IS 10 A1 James E. Wilson III A1 Lincoln J. Bynum A1 Murugappan Ramanathan YR 1978 UL http://jnm.snmjournals.org/content/19/10/1187.2.abstract AB