Can contrast-enhanced MRI using gadoxetate disodium (EOVIST) replace triphasic CT to derive future liver remnant?

263 Background: Calculating future liver remnant volume (FLRV) is important in planning treatment of hepatic neoplasm. CE-MRI gadoxetate disodium (Eovist) has been shown to yield more information than 3p-CT, often narrowing the differential of hepatic neoplasms. The purpose of this study is to compare FLRV calculated from CE-MRI to those from 3p-CT. Methods: We performed a retrospective review of 28 patients with liver tumors evaluated with both 3p-CT and CE-MRI prior to treatment. Three-dimensional reconstructions were computed by manual tracing technique. 3p-CT is considered the gold standard. Results: The calculated total hepatic mean volumes for 3p-CT was 1,588 cm3 and 1,916 cm3 for CE-MRI, with spearman correlation (ρ) of 0.91 (p <0.01). The total volume difference was 327 cm3 (p <0.01). The right hepatic lobe volume was 1,028 cm3 (3p-CT) and 1,283 cm for (CE-MRI) (ρ 0.83, p <0.01). The left hepatic volume was 525 cm3 (3p-CT) and 638 cm3 (CE-MRI), (ρ 0.79, p <0.01). The difference in calculated volum...