As a full-line supplier of medical imaging equipment in Japan, Hitachi Medical Corporation (HMC) founded HMSA 1989 to provide a direct link to the U.S. marketplace. HMSA is responsible for the sales, marketing and service of all Hitachi Open MRI, PET/CT, Ultrasound, and Computed Tomography products in the United States.

In December 2019 Japan's Fujifilm announced the acquisition of Hitachi's diagnostic imaging business for 179 billion yen ($1.63 billion). This includes Hitachi’s CT, MRI, X-ray, and ultrasound imaging operations, also its electronic health record business. Fujifilm expects the deal to close in July 2020 subject to regulatory clearances.