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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 2 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 2

From: Direct hydrogen peroxide MRI fistulography versus indirect (intravenous) MRI fistulography in patients with perianal fistula

Fig. 2

A Axial IV CE T1 FS (indirect fistulography), B, C axial T1 FS (direct fistulography). D coronal T1 (direct fistulography) shows an inter-sphincteric fistula (arrow) which appears as a simple one, in the indirect images (A). However, in direct fistulography images (B–D) there is a significant distention and increased mean diameter of the fistula tract. Two additional side orifices were identified (block arrow)

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