Initial tests performed Friday night on Boston Celtics guard Mickael Pietrus suggest he escaped serious head injury.

Pietrus' agent, William McCandless, said Saturday that he was informed the X-ray and CT scans administered Friday night revealed no abnormalities, though Pietrus might have a concussion. Although Pietrus will undergo more tests and is waiting for conclusive results from an MRI, there's optimism he will indeed return to the court this season.

Pietrus took to Twitter on Saturday to thank fans for the outpouring of support and noted he hoped to be "back with my C's soon."

Pietrus suffered the injury when he crashed hard to the floor Friday night during the second quarter of the Celtics' 99-86 loss in Philadelphia. He was immobilized and taken from the court on a stretcher and transported to a local hospital.

"He was a very lucky man," said McCandless, who spoke with Pietrus and said the player's first question to an assistant at McCandless' agency was who won the game.

Pietrus was not admitted to the hospital, but spent the night in the area. He flew home Saturday afternoon to Boston, where he will be re-evaluated by the Celtics' medical staff.

"He's in very good spirits," Raoul Ramdine, Pietrus' business manager, told ESPN The Magazine's Ric Bucher. "We're taking this seriously and we don't know quite what it is yet, but he's OK."

As of Saturday morning, Ramdine said Pietrus was suffering no symptoms other than a stiff neck.

The Celtics' next game is Sunday, when they host Washington at TD Garden. In accordance with the NBA's concussion policy, Pietrus would have to undergo a series of tests by Dr. Jeffrey Kutcher, an associate professor of neurology at the University of Michigan, before he can resume playing. No timetable has been set for his return.

Information from ESPN The Magazine's Ric Bucher was used in this report.