Table 2:

Summary of imaging findings after LRT of HCC

	Expected post-treatment imaging appearance of successfully treated HCC	Imaging features suggestive of Viable Category
Thermal Ablation (Figure 2 and 3)	• No intralesional enhancement • Smooth perilesonal rim of enhancement and/or parenchymal perfusional changes without masslike area(s) of enhancement	Irregular masslike enhancement along the margin or intralesional (any degree, any phase)
Intra-arterial embolic therapy (TAE, cTACE, DEB-TACE) (Figure 4)	• No intralesional enhancement • Smooth perilesional rim of enhancement and/or parenchymal perfusional changes without masslike area(s) of enhancement	Irregular masslike enhancement along the margin or intralesional (any degree, any phase)
SBRT (Figure 5)	• No intralesional enhancement • Smooth or geographic parenchymal perfusional changes without masslike area(s) of enhancement • Irregular intralesional masslike enhancement (any degree, any phase) any time after treatment AND definite stability or decrease in size and/or degree of intralesional enhancement	Irregular intralesional masslike enhancement (any degree, any phase) at any time after treatment with new or increased size or degree of intralesional enhancing component(s)
TARE/y90 (Figure 6)	• No intralesional enhancement • Smooth or geographic parenchymal perfusional changes without masslike area(s) of enhancement • Irregular intralesional masslike enhancement (any degree, any phase) any time after treatment AND definite stability or decrease in size and/or degree of intralesional enhancement	Irregular intralesional masslike enhancement (any degree, any phase) at any time after treatment with new or increased size or degree of intralesional enhancing component(s)