Comparion between dynamic computed tomography and contrast-enhanced sonography

Abstract

Vascular and perfusion imaging by enhanced sonography with levovist has been advanced in recent years. We comparted the dynamic computed tomography (CT) images and perfusion images of enhanced sonography. Fourteen patients, who underwent dynamic CT and enhanced sonography, were diagnosed histopathologically with invasive ductal carcinoma of the pancreas between July 2001 and July 2004. Images of enhanced sonography were classified into three types : diffuse enhanced type (DE, n=1), partial enhanced type (PE, n=6), non-enhanced type (NE, n=7). The sensitivity and specificity of dynamic CT were similar to those of enhanced sonography, and the findings of enhanced sonography closely correlated with those of dynamic CT. Perfusion imaging of enhanced sonography could be more useful in cases with inflammation, fibrotic changes, and tumor blood flow than dynamic CT.