%0 Journal Article %T Enzyme inhibition of dopamine metabolism alters 6-[18 F]FDOPA uptake in orthotopic pancreatic adenocarcinoma %A Johanna Tuomela %A Sarita Forsback %A Laura Haavisto %A Tero Vahlberg %A Tove J Gr nroos %A Olof Solin and Merja Haaparanta-Solin %J EJNMMI Research %D 2013 %I Springer %R 10.1186/2191-219X-3-18 %X Combined use of [18F]FDG and [18F]FDOPA is suitable for imaging pancreatic tumours. Unequal pancreatic uptake after the employed enzyme inhibitors is due to the blockade of metabolism and therefore increased availability of [18F]FDOPA metabolites, in which uptake differs from that of [18F]FDOPA. Pretreatment with COMT + MAO-A inhibitors improved the differentiation of pancreas from the surrounding tissue and healthy pancreas from tumour. Similar advantage was not achieved using carbidopa. %U http://www.ejnmmires.com/content/3/1/18/abstract