LIMITED POWER OF ATTORNEY

BE IT KNOWN, that I, Patrick Ferguson, the undersigned, do hereby grant a limited power of attorney to Lynn Rogers, Assistant Secretary of Theragenics Corporation (R), as my attorney-in-fact.

My attorney-in-fact shall have the full power and authority to undertake and perform the following on my behalf:

1.     Sign and file reports on Securities and Exchange Commission Forms 3, 4, 5 and 144 with the Securities and Exchange Commission, the New York Stock Exchange, the National Association of Securities Dealers, or other financial exchanges as appropriate.

2.     Perform other reporting tasks as necessary in the filing of the aforementioned forms.

The attorney-in-fact agrees to accept this appointment subject to its terms, and agrees to act in said fiduciary capacity consistent with my best interest, as he, in his discretion, deems advisable. I agree to indemnify and hold harmless the attorney-in-fact from any liability whatsoever due to his failure to carry out or timely perform on my behalf the duties listed above.

This Power of Attorney may be revoked by me or the attorney-in-fact at any time, provided any person relying on this Power of Attorney shall have full rights to accept the authority of my attorney-in-fact until receipt of actual notice of revocation.

Dated this 9th day of May 2005.

/s/ Patrick Ferguson

Patrick Ferguson

Signed in the presence of:

/S/Glenn A. Dill

Witness

/s/ Wayne Black

Witness

Sworn and subscribed before me
this 9th day of May 2005.

/s/ Mary Greenawalt

Notary Public, State of Oregon

County of Multnomah

Commission Expires August 16, 2005

(Seal Affixed)