TABLE 1
ROI Estimates of Decay Constant (min
−1
)
Region
True value
FBP
HYPR-LR (3 × 3 × 3 voxels) filter
11
C
0.0341
0.0347 ± 0.0006
0.0345 ± 0.0005
18
F
0.0069
0.0066 ± 0.0005
0.0067 ± 0.0001
Estimates were obtained using nonlinear least squares ± SE.