TABLE 3

Groupwise Correlation Between Modeled and Measured AC in Literature and from This Study

Method18F-FDG parameterR2Subjects (n)ROIs per subject
Direct segmentation (4)*Cerebral glucose metabolic rate0.911020
Zubal tissue atlas (9)*Cerebral glucose metabolic rate0.841020
Measured template (11)*Radioactivity concentration0.91963
Measured templates (30)†Radioactivity concentration0.91–0.941512
BrainWeb–Zubal atlas†Radioactivity concentration (vtkCISG)0.9810110
Measured template†Radioactivity concentration (vtkCISG)0.9910110
Radioactivity concentration (SPM2)0.9810110

  • ↵* Compared with singles-mode 137Cs transmission scanning.

  • ↵† Compared with coincidence-mode 68Ge transmission scanning.