Accuray Inc. (NSDQ:ARAY) may be the fish that swallowed the whale, but it might have bitten off more than it can chew judging from its fourth-quarter and fiscal 2011 results.

The Sunnyvale, Calif.-based radiosurgery device maker paid $300 million for its larger rival TomoTherapy in March. That acquisition sent ARAY into the red for both the quarter and full year.