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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Abdom Radiol (NY). 2018 Jan;43(1):218–230. doi: 10.1007/s00261-017-1281-6

Table 5.

LI-RADS Treatment Response Categories

Treatment Response Categories Criteria
LR-TR Nonviable Treated, probably or definitely not viable

  • No lesional enhancement OR

  • Treatment-specific expected enhancement pattern
LR-TR Equivocal Treated, equivocally viable Enhancement atypical for treatment-specific expected enhancement pattern and not meeting criteria for probably viable or definitely viable
LR-TR Viable Treated, probably or definitely viable Nodular, mass-like, or thick irregular tissue in or along the treated lesion with any of the following:

  • Arterial phase hyperenhancement OR

  • Washout appearance OR

  • Enhancement similar to pretreatment