High-density material within gallbladder (GB)
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CT > 10x more sensitive than radiographs in detecting slight differences in density
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Mild to moderate opacification of GB bile on day after CECT or angiogram is a normal and expected finding
Does not necessarily imply abnormal renal function
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Dense opacification on CT indicates ↓ renal function
Increased attenuation of ascites fluid
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Visible a few hours after IV administration of contrast
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Results from hepatobiliary and peritoneal contrast excretion into ascites
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Mildly increased density of ascites fluid may not indicate renal impairment
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Significantly ↑ attenuation suggests ↓ renal function
Increased attenuation of pericardial fluid
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Most common in first few hours after IV contrast
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Mildly ↑ attenuation can be normal finding
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Radiographic findings
Opacification of bile within GB after IV contrast always implies impaired or delayed renal function
Related
Diagnostic Imaging_ Gastrointes - Michael P Federle
