* Department of Diagnostic Imaging and Nuclear Medicine, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
** Department of Radiology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
A 97-year-old male patient suffering from hepatocellular carcinoma (HCC) underwent multiple sessions of transcatheter arterial chemoembolization (TACE) within the past 7 years. He was referred for an assessment of a HCC recurrence due to an elevated alphafetoprotein (AFP) serum level. Regularly, it would require 600 mgI/kg for the diagnosis of HCC in our institution. Taking into consideration his impaired kidney function (eGFR 32 mL/min/1.73 m2), only 300 mgI/kg was administrated. A TwinBeam Dual Energy (TBDE) CT was performed.