Dynamic-contrast-enhanced magnetic resonance imaging of cirrhotic liver parenchyma: A comparison between gadolinium–diethylenetriamine pentaacetic acid and gadolinium–ethoxybenzyl–diethylenetriamine pentaacetic acid

摘要

Background: The newly developed magnetic-resonance-imaging (MRI) hepatocyte-specific contrast agent, gadolinium–ethoxybenzyl–diethylenetriamine pentaacetic acid (Gd–EOB–DTPA), has different excretion pathways from the conventional MRI contrast agent, gadolinium–diethylenetriamine pentaacetic acid (Gd–DTPA). In this study, we compare the enhancement effect of the liver and renal parenchyma between these two contrast agents for patients with liver cirrhosis. Methods: We retrospectively included 49 consecutive patients with liver cirrhosis who underwent Gd–DTPA- and Gd–EOB–DTPA-enhanced MRIs within 3 months. We measured the signal intensity of the liver and kidney, and calculated the enhancement ratio (ER) in the arterial phase, portal venous phase, and venous phase (VP). We also calculated a delayed phase (DP) when Gd–DTPA was used, and a hepatocyte phase (HP) when Gd–EOB–DTPA was used. The ERs were compared between the two contrast agents. The effect of liver function on the ERs was also evaluated. Results: The ER of the liver with Gd–EOB–DTPA was significantly higher than with Gd–DTPA in the VP (p?=?0.01) and in the HP/DP (p?=?0.01). The ER of the kidney in the DP with Gd–DTPA was significantly higher than in the HP with Gd–EOB–DTPA (p?