Table 2 Lu’s Criteria [12]
Grade | Imaging features |
|---|---|
0 | No contiguity of tumor to vessel. |
1 | Tumor contiguous to less than one-quarter circumference. |
2 | Between one-quarter and one-half circumference. |
3 | Between one-half and three-quarters circumference. |
4 | Greater than three-quarters circumferential involvement or any vessel constriction. |