RT Journal Article SR Electronic T1 123I-β-CIT SPECT for Imaging Serotonin Transporters in Parkinson’s Disease JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 923 OP 924 VO 45 IS 5 A1 Barthel, Henryk A1 Hesse, Swen A1 Sabri, Osama YR 2004 UL http://jnm.snmjournals.org/content/45/5/923.abstract AB