Cate Blanchett injured onstage in "Streetcar"

Australian actress Cate Blanchett, who portrays Daisy in the movie ''The Curious Case of Benjamin Button'', poses for a portrait in Beverly Hills, California December 7, 2008.

SYDNEY (Reuters) - Oscar-winning actress Cate Blanchett was injured when a prop radio hit her head onstage Wednesday night, causing the performance to be canceled. But the show will go on, the theater company said on Thursday.

During a scene in "A Streetcar Named Desire" at the Sydney Theater Company, Australian co-star Joel Edgerton, as Stanley Kowalski, threw a radio out a window and it accidentally hit Blanchett, playing Blanche DuBois, on the back of the head, causing her to bleed.

Despite the mishap, Blanchett continued the scene, and the audience was not aware of the seriousness of the injury until she disappeared into the wings and an announcement was made that the show had been canceled.

Sydney Theater Company spokesman Tim McKeough said the injury was minor.

"I've spoken to Cate. She's absolutely fine, and we anticipate the show will go ahead tonight," McKeough told Reuters.

Blanchett, 40, who came to international attention in the 1998 film "Elizabeth" and won a best supporting actress Oscar in 2005 for playing Katharine Hepburn in "The Aviator," has always made it clear that theater is her main passion.

Blanchett and her playwright husband, Andrew Upton, are currently artistic directors of the Sydney Theater Company.

(Reporting by Pauline Askin, Editing by Belinda Goldsmith)