Siemens (Germany)
Bracco Diagnostic
Koninklijke Philips NV (Netherlands)
lantheus Medical Imaging Inc. (US)
Shimadzu Corporation (Japan)
Perimed (US)
General Electric Company (US)
Medtronic (Ireland) Inc. (Italy)
Neusoft Corporation (China)
Canon Medical Systems Corporation (Japan)
Aetna (US)
Advantis Medical Imaging (Netherland)