Proximal arterioportal shunting associated with hepatocellular carcinoma: Features revealed by dynamic helical CT

OBJECTIVE. This study investigated the findings revealed by dynamic helical CT of proximal arterioportal shunting associated with hepatocellular carci noma. We also evaluated the diagnostic capability of this imaging technique to reveal the mass in patients with hepatocellular carcinoma. CONCLUSION, On dynamic helical CT, proximal arterioportal shunting altered liver perfusion and tumor enhancement. Heterogeneous enhancement of liver p arenchyma and decreased enhancement of hepatomas diminished diagnostic capa bility on the arterial dominant phase image. However, with the addition of imaging in the arterial portal phase, lesion conspicuity improved.