Purchase of Anaheim’s Alliance Imaging OKd

The planned acquisition of Alliance Imaging Inc., a small Anaheim medical concern, by New York investment firm Kohlberg, Kravis, Roberts & Co. has won early approval from the Federal Trade Commission.

Kohlberg, Kravis, which became known in the 1980s for major acquisitions involving huge amounts of debt, said last month it will buy 90% of Alliance Imaging for $55 a share, or $313.5 million cash. New York investor Leon Black’s Apollo Management Inc. owns nearly 83% of Alliance, which provides magnetic resonance imaging services to hospitals and other health care operations.