RT Journal Article SR Electronic T1 Ventilation–Perfusion Scanning: Stuck in a Rut, Perhaps, but the Road Ahead Is Not So Clear JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 2079 OP 2079 DO 10.2967/jnumed.114.148148 VO 55 IS 12 A1 Leonard M. Freeman YR 2014 UL http://jnm.snmjournals.org/content/55/12/2079.1.abstract AB