Email RIS file
Bookmark
Report an Issue

Comparing Imaging and Non-Imaging Techniques for Reducing Background Clutter and Resolving Distant Point Sources [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
PDF-file: 7 pages; size: 0 Kbytes
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
To reach maximum sensitivity, any method used to search for orphan sources must be insensitive to local variations of the background. Using imaging and non-imaging techniques, we analyzed the same data acquired by a search instrument deployed as a large-area, coded-mask imager. Data from many passes past a 1 mCi source at 65 m from the instrument were used to construct a model of the instrument response. We then used the model to ''hide'' the source in data taken in a light urban environment. We compared the success of detecting the hidden sources using imaging coded-mask methods, pseudo-imaging based on a zero-area matched filter, and non-imaging using simple thresholding. The results clearly indicate the superiority of imaging with the coded-mask techniques returning the best results.
Report Numbers
E 1.99:ucrl-conf-217039
ucrl-conf-217039
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
11/10/2005.
"ucrl-conf-217039"
Presented at: 2005 IEEE Nuclear Science Symposium and Medical Imaging Conference, Fajardo, PR, United States, Oct 23 - Oct 29, 2005.
Graham, R; Ziock, K; Fabris, L; Wurtz, R.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14346719