Producers behind The Big Bang Theory honoured late actress Carol Ann Susi by airing her picture and a tribute message at the end of the latest episode.

The 62 year old, who passed away on Tuesday (11Nov14) after a battle with cancer, was a regular in the sitcom, but never showed her face because she provided the voice of unseen character Mrs. Wolowitz.

U.S. viewers of the show were given a glimpse of her picture for the first time on Thursday (13Nov14) when producers dedicated the latest episode to Susi.

A photograph of the actress was shown along with the message, "In loving memory of Carol Ann Susi. 'Mrs. Wolowitz.' Every time you spoke, we laughed. You're in our hearts forever."

Since the news broke, co-stars including Kunal Nayyar, Melissa Rauch and Mayim Bialik have also offered tributes on social media.