Assessment of 3-D PET quantitation: influence of out of the field of view radioactive sources and of attenuating media
IEEE Transactions on Nuclear Science（1998）
摘要
Using the Utah scatter phantom with media of different densities and activity proportions, the authors tested the accuracy of quantitation in the two-dimensional (2-D) and three-dimensional (3-D) modes of acquisition of the ECAT EXACT HR+ tomograph. The influence of radioactive sources outside the field of view (FOV) was also investigated, using different bed positions. The authors measured the ac...
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关键词
Positron emission tomography,Scattering,Imaging phantoms,Attenuation,Testing,Two dimensional displays,Image reconstruction,Counting circuits,Image restoration,Error correction
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