<s>
In	O
urology	O
,	O
voiding	B-Algorithm
cystourethrography	I-Algorithm
(	O
VCUG	B-Algorithm
)	O
is	O
a	O
frequently	O
performed	O
technique	O
for	O
visualizing	O
a	O
person	O
's	O
urethra	O
and	O
urinary	O
bladder	O
while	O
the	O
person	O
urinates	O
(	O
voids	O
)	O
.	O
</s>
<s>
The	O
technique	O
consists	O
of	O
catheterizing	O
the	O
person	O
in	O
order	O
to	O
fill	O
the	O
bladder	O
with	O
a	O
radiocontrast	B-Application
agent	I-Application
,	O
typically	O
diatrizoic	O
acid	O
.	O
</s>
<s>
Indications	O
for	O
performing	O
VCUG	B-Algorithm
:	O
</s>
<s>
Contraindications	O
for	O
voiding	B-Algorithm
cystourethrogram	I-Algorithm
is	O
when	O
the	O
subject	O
is	O
having	O
:	O
</s>
