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CT Voiding Cystourethrography Using 16-MDCT for the Evaluation of Female Urethral Diverticula: Initial Experience

Sun Ho Kim1, Seung Hyup Kim1, Byung Kwan Park1, Se Young Jung1, Sung Il Hwang1, Jae-Seung Paick2 and Soo Woong Kim2

1 Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
2 Department of Urology, Seoul National University College of Medicine, Seoul, Korea.



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  		Fig. 1A. —Urethral diverticulum in 52-year-old woman. Conventional voiding cystourethrography (VCUG) image shows urethral diverticulum, lumen of which is partially filled with contrast medium (arrows).

 


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  		Fig. 2A. —Urethral diverticulum in 39-year-old woman. Left paramedian T2-weighted sagittal MR image (TR/TE, 4.3/2.2; flip angle, 37°) obtained using 3D true fast imaging with steady-state free precession sequence while patient voids shows part of urethral diverticulum (arrows) anterior to proximal urethra (U). Reformatted coronal image (asterisk) also shows part of diverticulum left lateral to proximal urethra. Ostium or neck is not visible on this image and could not be identified on other MR images (not shown).

 


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  		Fig. 1B. —Urethral diverticulum in 52-year-old woman. Three-dimensional reformatted CT VCUG image (left anterior view) shows diverticulum (large arrows) left lateral to proximal urethra (U), and ostium (small arrow) is identified.

 


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  		Fig. 1C. —Urethral diverticulum in 52-year-old woman. Axial CT VCUG image shows ostium (arrowhead) at 5 o'clock position relative to lumen of mid urethra (arrow).

 


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  		Fig. 2B. —Urethral diverticulum in 39-year-old woman. Three-dimensional reformatted CT voiding cysto-urethrography (VCUG) image (left posterior view) shows ostium (arrowhead) of diverticulum (arrows) surrounding proximal urethra (U) anterolaterally. Proximal urethra is abnormally dilated because of previous surgery.

 


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  		Fig. 2C. —Urethral diverticulum in 39-year-old woman. Coronal CT VCUG image also shows ostium (arrow) clearly. U = urethra.

 

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