NASI North American Scientific (MM)

North American Scientific, Inc. (Nasdaq:NASI) announced today that it will issue financial results for the fourth fiscal quarter of 2007, which ended October 31, 2007, at market close on Tuesday, January 29, 2008. The Company will host an investor conference call to review its fourth quarter 2007 financial results and latest corporate developments, beginning at 1:30 p.m. Pacific Time/4:30 p.m. Eastern Time on Tuesday, January 29, 2008. The dial-in number for the conference call is 800-240-2430 for domestic participants and 303-262-2006 for international participants. A live webcast of North American Scientific's conference call will be available over the Internet through its website at www.nasmedical.com in the Investor Center. For those who cannot listen to the live webcast, a taped replay of the call will be available beginning approximately one hour after the call�s conclusion and will remain available for seven days. It can be accessed at the same site shortly after the call, or by dialing 800-405-2236 for domestic callers and 303-590-3000 for international callers, using the passcode 11107832#. About North American Scientific North American Scientific is a leader in radiation therapy in the fight against cancer. Its innovative products provide physicians with tools for the treatment of various types of cancers. They include Prospera� brachytherapy seeds and SurTRAK� needles and strands used primarily in the treatment of prostate cancer. In addition, the Company has been gaining clinical experience with its first generation ClearPath� multi-channel catheter breast brachytherapy devices in 2007, and intends to launch the second generation devices in 2008. They are the only such devices approved for both high dose and continuous release, or low dose, radiation treatments. The devices are designed to provide flexible, precise dose conformance and an innovative delivery system that is intended to offer the more advanced form of brachytherapy for the treatment of breast cancer. Please visit www.nasmedical.com for more information.