18-Fluorodeoxyglucose Uptake by Positron Emission Tomography in Extraocular Muscles of Patients with and without Graves' Ophthalmology

Table 1

Physiological FDG uptake of extraocular muscles.

Muscle	Average	SD	Range
SR	2.01	0.61	1.41	2.62
IR	1.98	0.58	1.40	2.56
MR	1.84	0.45	1.39	2.29
LR	1.86	0.44	1.42	2.29
SO	1.77	0.48	1.29	2.24
Average	1.89	0.52	1.37	2.41

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