PURIFICATION METHOD

摘要

A diagnostic imaging agent useful for positron emission tomography (PET) imaging as well as to improved hardware for producing such imaging agents is described. Flutemetamol (18F) Injection for the imaging of &bgr;-amyloid plaques in the brain and methods and devices for preparing same are described including the automated synthesis and purification of [18F]flutemetamol by means of solid phase extraction (SPE).