Exhibit 17.1

December 31, 2008

M. Christine Jacobs

Chairman & CEO

Theragenics Corporation

5203 Bristol Industrial Way

Buford, GA 30518

C. David Moody

Chairman of the Theragenics Governance Committee

C. D. Moody Construction

6017 Redan Road

Lithonia, GA  30058

Re: Theragenics Board Resignation

Dear Chris and Dave:

Due to upcoming business commitments, I hereby tender my resignation as a Director of Theragenics Corporation effective December 31, 2008.

Thank you for the opportunity to serve the shareholders and the company. I wish you and the company success going forward.

Sincerely,

/s/ Luther T. Griffith

Luther T. Griffith

President, Griffith Resources, Inc.