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Fig. 8 | Insights into Imaging

Fig. 8

From: Orbital tumours and tumour-like lesions: exploring the armamentarium of multiparametric imaging

Fig. 8

42-year-old male with a histologically proven right orbital dermoid. Coronal T1W (a), axial T2W (b), axial T1W (c), axial ADC map (d), and coronal FS contrast-enhanced T1W (e) images show an orbital lesion with an anterior component containing fatty tissue (thick white arrows) and a posterior component containing non-fatty elements (hollow arrows). There are some fluid droplets in the anterior component (thin arrows). Note minor capsular enhancement after gadolinium administration. The ADC values are very low in the anterior part of the lesion (ADC = 0.1 × 10 −3 mm2/s) due to fat and they are very high in the posterior component (ADC = 1.8 × 10 −3 mm2/s) due to fluid. f. DTI 3D tractography reconstruction of the optic nerves (green) viewed from above and from the left. Right optic nerve fibres (white thin arrows) and left optic nerve fibres (green thin arrows) are normal and have similar FA and ADC values. Thick arrow points to the dermoid

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