Table 1.

Comparison between commonly used modalities for liver fat quantification

Modality	Cost	Accuracy	Point of care	Quantitative	Caveats
Conventional ultrasound	+	++	Yes	No	May fail in obesity and in iron overload and cirrhosis
CAP	+	++	Yes	Yes, but not linear in higher liver fat content	Affected by type of probe and fibrosis
CT	++	++	No	Semi-quantitative	Ionizing radiation
MRI-PDFF	++	+++	No	Yes	Not suitable for screening

CAP: controlled attenuation parameter, CT: computed tomography, MRI-PDFF: magnetic resonance imaging proton density fat fraction