FIGURE 3.

Bland–Altman plots depicting the agreement between two independent observers who separately semi‐automatically segmented the extra‐ocular muscles of the right orbits. The four extra‐ocular muscles are shown in separate colors: the lateral rectus (LR) muscle, the medial rectus muscle (MR), the inferior rectus muscle (IR) and the superior rectus and levator palpebrae muscle complex (SR+LP). Groups are shown in different shapes: Graves' ophthalmopathy (GO) patients, myasthenia gravis (MG) patients and healthy controls (HC). A shows the agreement in muscle volume (bias and limits of agreement: 0.03 cm³ ([95% CI]: −0.33 cm³; 0.39 cm³)). B shows the agreement in fat fractions (FF) (bias and limits of agreement: −0.3% ([95% CI]: −3.1%; 2.6%)). C shows the agreement between the isotropic Dixon scan and the scan with a higher resolution in the coronal plane (bias and limits of agreement: −0.7% ([95% CI]: −3.4%; 1.8%))