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Reversed contrast-urine levels in urinary bladder: CT findings
1Department of Diagnostic Radiology, Seoul National University College of Medicine, Republic of Korea.
Urologic Radiology
|January 1, 1992
Abstract:
Contrast-urine levels are routinely seen in contrast-enhanced computed tomography (CT) of the pelvis with contrast-opacified urine in the bottom and unopacified urine in the top. We encountered four cases in which contrast-urine levels were reversed. The reversal of the contrast-urine level was probably caused by high specific gravity of the preexisting urine in the bladder due to infectious debris or mucous threads in the urine.