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Fig. 3 | Insights into Imaging

Fig. 3

From: Imaging foreign bodies in head and neck trauma: a pictorial review

Fig. 3

Intraorbital wood. Axial CT image (a) and axial T1-weighted MRI post-contrast (b) demonstrate a small structure close to the orbital roof (arrow), which is moderately hyperdense and hypointense. There is a bony defect in the adjacent wall of the frontal sinus. Coronal T1-weighted MRI with fat saturation post-contrast (c) reveals the aforementioned object (arrow), two more small punctate hypointense foci (arrowheads) and extensive enhancement of the surrounding orbital soft tissues and sinus mucosa. Differential diagnosis for the hypointense structures at this point includes the presence of foreign objects and dislocated bone fragments. Based on MRI alone, abscesses and emphysema should also be considered, but the appearance of a hyperdense object in CT images helps narrow the differential in this case. d A photograph of three wood pieces after their surgical removal

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