Fig. 4
Kaplan-Meier curves showed overall survival of HCC patients stratified by treatment response (a), AEFpre (b), AEFpost (c), and decrease ratio (d). Analyses in a and b were based on 158 patients, and analyses in c and d were based on 144 patients excluding CR response. Decrease ratio > − 0.102 (d) contained two parts, decrease ratio ≥ 0 and increase ratio < 0.102. Likewise, decrease ratio < − 0.102 was equivalent to increase ratio > 0.102. HCC: hepatocellular carcinoma; AEF = arterial enhancement fraction; CR: complete response