Importance

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Abstract

First and second gamma radiation detector heads are oriented to image an area of a subject. The area of said subject is completely within a field of view that is defined between the first and second gamma radiation heads. Focal points of each of the first and second gamma radiation heads are also within an area defined between the first and second gamma radiation heads. A computer is programmed to receive image information from both the first gamma radiation detector head and the second gamma radiation detector head, and operating to use information from both the first gamma radiation detector head and the second gamma radiation detector head, as well as to use information indicative of a distance between the first gamma radiation detector head and the second gamma radiation detector head, to determine a location of an item of interest in the subject and between the first gamma radiation detector head and the second gamma radiation detector head, by calculating using information about similar triangles formed from known positions of the first gamma radiation detector head and the second gamma radiation detector head, and the information.

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First Claim