Toshiba
GE Healthcare
Siemens Healthcare
Philips Healthcare and Epsilon Imaging among others.
Canon Inc (Japan)
Shimadzu Corporation (Japan)
Agfa-Gevaert Group (Belgium)
GENERAL ELECTRIC (US)
Fujifilm Holdings Corporation (Japan)
TOMTEC IMAGING SYSTEMS (Germany)
Circle Cardiovascular (US)
Pie Medical Imaging (Belgium)
HeartSciences (US)
and MEDIS Medical Imaging Systems (Netherlands)