RT Journal Article SR Electronic T1 Simple Ratio Analysis of 18F-Fluorodopa Uptake in Striatal Subregions Separates Patients with Early Parkinson Disease from Healthy Controls JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine DO 10.2967/jnumed.108.061572 A1 Jokinen, Pekka A1 Helenius, Hans A1 Rauhala, Elina A1 Brück, Anna A1 Eskola, Olli A1 Rinne, Juha O. YR 2009 UL http://jnm.snmjournals.org/content/early/2009/05/14/jnumed.108.061572.abstract AB