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High-sensitivity Single-Photon Emission Computed Tomography (SPECT): Safer, faster, and more accurate SPECT

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1 Author(s)
Subbarao, M. ; Dept. of Electr. & Comput. Eng., Stony Brook Univ., Stony Brook, NY, USA

A method and apparatus are described for high-sensitivity Single-Photon Emission Computed Tomography (SPECT). The apparatus includes a two-dimensional (2D) gamma detector array that, unlike a conventional SPECT machine, moves to different positions in a three-dimensional (3D) volume space near an emission source and records a data vector g which is a measure of gamma emission field. In particular, the 3D volume space in which emission data g is measured extends substantially along a radial direction r pointing away from the emission source, and unlike a conventional SPECT machine, each photon detector element in the 2D gamma detector array is provided with a very large collimator aperture. Data g is related to the 3D spatial density distribution f of the emission source, noise vector n, and a system matrix H of the SPECT apparatus through the linear system of equations g = Hf+n. This equation is solved for f by a method that reduces the effect of noise.

Published in:

Emerging Technologies for a Smarter World (CEWIT), 2011 8th International Conference & Expo on

Date of Conference:

2-3 Nov. 2011