Diagnostic imaging center operator Primedex Health Systems Inc. has changed it name to RadNet Inc. following completion of an acquisition and amid efforts to move to the Nasdaq.

Los Angeles-based RadNet acquired Dallas-based competitor Radiologix Inc. in a cash and stock transaction valued at around $208 million. The deal makes the company the nation’s largest owner and operator of fixed-site diagnostic imaging centers, with 132 locations in 11 states and more than $400 million in annual revenues. The company has 80 centers in California.

The company, which now trades under the ticker RDNT.OB on the OTC Bulletin Board, said on Monday that it had executed a reverse-split stock split that turned two shares of Primedex’s common stock into one share, reducing outstanding shares to approximately 33.5 million. Shares were trading at around $4.85 on Tuesday.

RadNet said the move should help the company meet requirements for listing on the higher profile Nasdaq Global Market.