Table 2.

Imaging studies of hepatic steatosis and potential confounding factors

Test	Potential confounding factors
Abdominal ultrasonography	Difficult examination in obese patients and patients with high riding liver and focal fatty sparing Accuracy may be lower in older patients and patients with significant liver fibrosis Operator experience
Computed tomography	Hepatic iron content may affect liver attenuation
Controlled attenuation parameter	Failure rate higher in obese patients Accuracy may also be lower in obese patients
Proton-magnetic resonance spectroscopy or magnetic resonance imaging proton density fat faction	Hepatic iron content may affect the measurement of hepatic fat fraction, but this can be corrected during analysis