· Aloka

· Lenetix Medical Screening Labs

· American Institute of Ultrasound in Medicine

· Lippincott, Williams and Wilkins

· AS Software

· Medical Positioning

· Biosound Esaote

· Medison

· Cardiac QA

· Medtronic

· CIVCO

· Parker Laboratories

· Diagnostic Health Group

· Parks Medical Electronics

· DWL Systems, Inc.

· Philips Medical Systems

· Elsevier

· ProSolv CardioVascular

· GE Healthcare

· Siemens Medical Solutions

· Genzyme Genetics

· SONODEPOT, Inc.

· Hokanson

· SonoSite

· Imaging Associates, Inc.

· Unetixs Vascular, Inc.

· Kardia Health Systems

· VidiStar