Interceptor and Phantom Trials of EDNS at UPMC.

University of Pittsburgh Medical Center (UPMC) installed an Emergency Department Notification System (EDNS) in one of its hospitals. The system, manufactured by Thermo Fisher Scientific (Thermo Fisher Scientific, Inc., 81 Wyman Street, Waltham, MA 02454), consists of four NaI(Tl) scintillation detectors, a 2.5 L PVT gamma counter, a 512 channels multi-channel analyzer, a system controller, and a database-monitoring server. We evaluated a portable Interceptor Interceptor™ hand-held detector (Thermo Fisher Scientific, Inc., 81 Wyman Street, Waltham, MA 02454) as part of the system for potential ambulancebased early detection and warning unit. We present the minimum detectable activity, distance, and isotope identification success rates along with the change in detector response to various radioisotope sources placed in a Rando® humanoid phantom. (The Phantom Laboratory. P.O. Box 511, Salem, NY 12865-0511 USA). The present paper reports these results.