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Table 3 Geometrical density as in Table 2 for Nd=32 and NE=4

From: Algorithms for joint activity–attenuation estimation from positron emission tomography scatter

N j

2×2

4×4

8×8

9×9

16×16

\(\underline {\boldsymbol {K}}\)

1.31

2.41

2.79

2.78

1.85

A λ

2.25

7.76

17.4

18.9

23.0