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Optimisation of source geometry for flood images to be used for nonuniformity corrections on large area detectors

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5 Author(s)
Divoli, A. ; Inst. of Cancer Res., R. Marsden Hosp., Sutton, UK ; Evans, N. ; Erlandsson, K. ; Flower, M.A.
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Prior to reconstruction, emission data must be normalised to account for crystal nonuniformities and for geometric effects. The method adopted for normalisation of data acquired with the novel positron camera PETRRA is a direct method based on the inversion of a pair of flood images. In this work sources of several geometries for the flood acquisitions were tested on tomographic data. The different source geometries were: a 68Ge point source in static and tomographic mode, a 2D plane source filled with 18F, and a 3D uniform cylinder filled with 18F.

Published in:

Nuclear Science Symposium Conference Record, 2002 IEEE  (Volume:3 )

Date of Conference:

10-16 Nov. 2002