Exhibit 31.2

I, James A. MacLennan, certify that:

1. I have reviewed this Annual Report on Form 10-K for the fiscal year ended December 31, 2003 of Theragenics Corporation^®;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. [Intentionally omitted]

4. [Intentionally omitted]

5. [Intentionally omitted]

	THERAGENICS CORPORATION®
August 2, 2004	/s/ James A. MacLennan James A. MacLennan Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer)