2016_Imaging for Physicists
Normalization
LORs have different sensitivities Individual correction factor for each LOR Correction Methods: Direct Normalization ● Illumination of all possible LORs with planar or rot. line source ● Long scan times necessary ● Sources must have very uniform activity distribution
Mean radial geometric profiles for three block-detectors. Asymmetry due to the fact that centre of rotation of sources not coincident with center of detector ring (from [2]).
ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring Component-based Model for Normalization
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