Two San Antonio-based MRI centers sold by investors. (magnetic resonance imaging centers Imaging One Group Inc. and Professional Imaging Services Inc. purchased by Medinvest Holdings Inc.)

A recently incorporated holding company has purchased two medical imaging centers in San Antonio, buying out local doctors as well as two majority investors who started the centers.

Imaging One Group Inc. on the city's Northwest side and Professional Imaging Services Inc. on Southwest Military Drive were purchased late last month by Medinvest Holdings Inc., according to a shareholder in the centers.

It is unknown who the principals in Medinvest are, and repeated attempts to reach the San Antonio lawyer listed in state documents as the firm's registered agent were unsuccessful.

The two imaging centers were set up over the last two years to capitalize on the growing demand …