ST. LOUIS, Mo.--(BUSINESS WIRE)--Metro Imaging in St. Louis, Mo., is the first outpatient imaging center in the nation to install Hitachi’s OASIS™ high-field magnetic resonance (MR) imaging system at its South County location, 13303 Tesson Ferry Road. Hitachi Medical Systems America Inc. (HMSA) marketed the advanced diagnostic medical imaging system – a new product from Hitachi Medical Corp., Tokyo, Japan.