TY - GEN
T1 - High-sensitivity Single-Photon Emission Computed Tomography (SPECT)
T2 - 2011 8th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2011
AU - Subbarao, Murali
PY - 2011
Y1 - 2011
N2 - 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 Hfn. This equation is solved for f by a method that reduces the effect of noise.
AB - 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 Hfn. This equation is solved for f by a method that reduces the effect of noise.
KW - computed tomography
KW - medical imaging
KW - Positron Emission Tomography (PET)
KW - Single-Photon Emission Computed Tomography (SPECT)
UR - https://www.scopus.com/pages/publications/84857227848
U2 - 10.1109/CEWIT.2011.6135884
DO - 10.1109/CEWIT.2011.6135884
M3 - Conference contribution
AN - SCOPUS:84857227848
SN - 9781457715914
T3 - 2011 8th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2011
BT - 2011 8th International Conference and Expo on Emerging Technologies for a Smarter World, CEWIT 2011
Y2 - 2 November 2011 through 3 November 2011
ER -