High-density material within gallbladder (GB)
–
CT > 10x more sensitive than radiographs in detecting slight differences in density
–
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
–
Dense opacification on CT indicates ↓ renal function
Increased attenuation of ascites fluid
–
Visible a few hours after IV administration of contrast
–
Results from hepatobiliary and peritoneal contrast excretion into ascites
–
Mildly increased density of ascites fluid may not indicate renal impairment
–
Significantly ↑ attenuation suggests ↓ renal function
Increased attenuation of pericardial fluid
–
Most common in first few hours after IV contrast
–
Mildly ↑ attenuation can be normal finding