AVID AND SIEMENS PETNET

PETNET production to expand availability of Florbetapir for clinical studies in the United States

Philadelphia, PA and Knoxville, TN – April 07 , 2010 – Avid Radiopharmaceuticals, Inc. (“Avid”) and PETNET Solutions, Inc. (“PETNET”), a wholly-owned subsidiary of Siemens Medical Solutions, USA, Inc. (“Siemens”, NYSE: SI), marked the first dose shipped from a PETNET Solutions manufacturing facility as part of its collaboration with Avid on Florbetapir F 18 (18F-AV-45 or Florbetapir), Avid’s molecular imaging agent for positron emission tomography (PET) imaging of β-amyloid deposits in the brain, a key pathological component of Alzheimer’s disease.