Table 1: Physiological FDG uptake of extraocular muscles.

MuscleAverageSDRange

SR2.010.611.412.62
IR1.980.581.402.56
MR1.840.451.392.29
LR1.860.441.422.29
SO1.770.481.292.24
Average1.890.521.372.41

SR: superior rectus, IR: inferior rectus, MR: medial rectus, LR: lateral rectus, and SO: superior oblique.