Assessment of vascularity in hepatic tumors: comparison of power Doppler sonography and intraarterial CO(2)-enhanced sonography.

Objective: The purpose of the study was to compare power Doppler sonography with intraarterial CO(2)-enhanced sonography for revealing vascularity in treated and untreated hepatic tumors.

Subjects And Methods: Fifty-five patients with 93 liver tumors were prospectively examined with power Doppler sonography and CO(2)-enhanced sonography. These tumors included 29 hepatocellular carcinomas in patients with no previous treatment, 26 treated hepatocellular carcinomas, and 38 hemangiomas.