In radiology and urology, a cystography (also known as cystogram) is a procedure used to visualise the urinary bladder.

Using a urinary catheter, radiocontrast is instilled in the bladder, and X-ray imaging is performed.

In adult cases, the patient is typically instructed to void three times, after which a post voiding image is obtained to see how much urine is left within the bladder (residual urine), which is useful to evaluate bladder contraction dysfunction.

A final radiograph of the kidneys after the procedure is finished is performed to evaluate for occult vesicoureteral reflux that was not seen during the procedure itself.

[1] CT cystography is performed by filling up the urinary bladder using diluted iodinated contrast to visualise any bladder injury if the subject has haematuria (blood in urine) post trauma.