Radiopharmaceutical Preparation
The radionuclide, 11CO2, was prepared
by the medical cyclotron (HM-10,
Sumitomo) in our department. [11C]CFT was produced
by an automatic synthesis module (CFN-MPS-200, Sumitomo) according to
the previously reported method22. The radiochemical
purity of [11C]CFT was above 95%.