title: Reversed contrast-urine levels in urinary bladder: CT findings.
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.
authors.affiliation: Department of Diagnostic Radiology, Seoul National University College of Medicine, Republic of Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.forename: M C
authors.initials: MC
authors.lastname: Han
mesh_terms: D000328:Adult; D000368:Aged; D002177:Candidiasis / Q000000981:diagnostic imaging; D003287:Contrast Media; D005260:Female; D006417:Hematuria / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D009093:Mucus; D013046:Specific Gravity; D014057:Tomography, X-Ray Computed; D001743:Urinary Bladder / Q000000981:diagnostic imaging*; D014552:Urinary Tract Infections / Q000000981:diagnostic imaging; D014556:Urine
chemical_list: D003287:Contrast Media