Table 1.
Modified Contrast-Enhanced Ultrasound Liver Imaging Reporting and Data System (CEUS LI-RADS) criteria.
| Rating Criteria with Nodule Size | Arterial Phase | Early Washout (<60 s) or Not |
Kupffer Phase (≥10 min) |
|---|---|---|---|
| LR-5 | |||
| ≥1 cm | Hyperenhancement (not rim, not peripheral discontinuous globular hyperenhancement) | No | Hypoechoic |
| LR-M | |||
| Nodule size not considered | Rim hyperenhancement or not rim, not peripheral discontinuous globular hyperenhancement | Yes | Hypoechoic |
| LR-4 | |||
| ≥2 cm | No hyperenhancement | No | Hypoechoic |
| ≥1 cm | Not rim, not peripheral discontinuous globular hyperenhancement | No | Isoechoic or Hyperechoic |
| <1 cm | Not rim, not peripheral discontinuous globular hyperenhancement | No | Hypoechoic |
| LR-3 | |||
| <2 cm | No hyperenhancement | No | Any |
| ≥2 cm | No hyperenhancement | No | Isoechoic or Hyperechoic |
| <1 cm | Not rim, not peripheral discontinuous globular hyperenhancement | No | Isoechoic or Hyperechoic |
| LR-2 | |||
| <1 cm | Iso-enhancement | No | Isoechoic or Hyperechoic |
| LR-1 | |||
| Nodule size not considered | Definitely benign arterial phase pattern (cyst, hemangioma, focal fatty deposition/sparing, or other definitely benign finding) | No | N/A |