Table 3 Error in mm of respiratory motion given by models (1) and (2) compared to the reference motion from the phantom, as given in Supplementary Data 1.

From: Estimation of optimal number of gates in dual gated 18F-FDG cardiac PET

Model

Motion

Target

RMSE

MD

Absolute value

(1)

Respiratory

Largest hot spot

0.38

0.30

0.00–0.73

(1)

Respiratory

Average of all

0.44

0.35

0.00–0.78

(1)

Cardiac

Largest hot spot

0.09

0.07

0.00–0.12

(1)

Cardiac

Average of all

0.21

0.16

0.00–0.33

(2)

Total

Largest hot spot

0.83

1.43

0.00–0.98

(2)

Total

Average of all

0.93

1.70

0.00–0.90

  1. The RMSE and MD are given as an error over all gating schemes. Absolute value refers to the absolute difference of estimated motion from the model and the reference motion given as a range over all gating schemes. The number of respiratory gates used was 1, 2, 3, 4, 5 and 6 while the number of cardiac gates was 1, 4, 6, 8 and 10.
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