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- W2139065927 abstract "The light distribution along one edge of a PET (positron emission tomography) scintillation crystal was investigated by Monte Carlo simulation. This position-dependent light distribution can be used to measure the position of the 500-keV photon interaction, in the crystal on an event-by-event basis, thus reducing radial elongation. The predicted full width at half maximum (FWHM) of the light distribution on the 3*30 mm surface of a 3*10*30 mm bismuth germanate (BGO) crystal surrounded by diffuse reflector is 3.0 mm. This light distribution is constant for widths (originally 3 mm) between 1 and 6 mm, but decreases from 3.0 to 1.8 mm FWHM as the height is reduced from 10 to 3 mm. Other geometrical modifications were simulated, including corner reflectors on the opposing 3*30 mm surface. A promising geometry is a 2.2*5*30 mm BGO crystal, for which a 2.2 mm FWHM light distribution is predicted, which should yield a PET detector module with a depth of interaction measurement resolution of 3.6 mm FWHM.< <ETX xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>></ETX>" @default.
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- W2139065927 date "1993-04-01" @default.
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- W2139065927 title "Monte Carlo optimization of depth-of-interaction resolution in PET crystals" @default.
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- W2139065927 doi "https://doi.org/10.1109/23.212336" @default.
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