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 Indian J Med Microbiol  
 

Figure 1 (a-e):Normal MRI anatomy of the sphincters. Axial T1W image (a) shows the internal and external sphincters. Axial fat-saturated T2W image (b) shows the relatively hyperintense internal sphincter bounded laterally by the hypointense external sphincter. Postcontrast axial T1W image (c) depicts normal enhancement of the internal sphincter. Coronal T1W image (d) delineates the levator ani. Coronal postcontrast T1W image (e) shows the internal and external sphincters and the levator ani

Figure 1 (a-e):Normal MRI anatomy of the sphincters. Axial T1W image (a) shows the internal and external sphincters. Axial fat-saturated T2W image (b) shows the relatively hyperintense internal sphincter bounded laterally by the hypointense external sphincter. Postcontrast axial T1W image (c) depicts normal enhancement of the internal sphincter. Coronal T1W image (d) delineates the levator ani. Coronal postcontrast T1W image (e) shows the internal and external sphincters and the levator ani