AJR. American journal of roentgenology
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AJR Am J Roentgenol · May 2006
Truncation artifact on PET/CT: impact on measurements of activity concentration and assessment of a correction algorithm.
Discrepancy between fields of view (FOVs) in a PET/CT scanner causes a truncation artifact when imaging extends beyond the CT FOV. The purposes of this study were to evaluate the impact of this artifact on measurements of 18F-FDG activity concentrations and to assess a truncation correction algorithm. ⋯ Truncation affects measurements of 18F-FDG activity concentrations in PET/CT. A truncation-correction algorithm corrects truncation artifacts with small residual error.