PT - JOURNAL ARTICLE AU - Kaasinen, Valtteri AU - Ruottinen, Hanna M. AU - NĂ¥gren, Kjell AU - Lehikoinen, Pertti AU - Oikonen, Vesa AU - Rinne, Juha O. TI - Upregulation of Putaminal Dopamine D<sub>2</sub> Receptors in Early Parkinson's Disease: A Comparative PET Study with [<sup>11</sup>C]Raclopride and [<sup>11</sup>C]<em>N</em>-Methylspiperone DP - 2000 Jan 01 TA - Journal of Nuclear Medicine PG - 65--70 VI - 41 IP - 1 4099 - http://jnm.snmjournals.org/content/41/1/65.short 4100 - http://jnm.snmjournals.org/content/41/1/65.full SO - J Nucl Med2000 Jan 01; 41