Conventional contrast-enhanced ultrasound (CEUS) versus side-by-side CEUS in the assessment of difficult liver lesions

Purpose: Hepatic lesions located at segments IVa and VIII have always been considered difficult to assess with ultrasound and even more difficult when they are small. The purpose of our work is to assess the role of side-by-side CEUS versus conventional CEUS in the diagnosis of difficult focal liver lesions. Methods and materials: A homogeneous group of 72 consecutive non-angiomatous focal liver lesions (liver segments IV and VIII, diameter range 14 to 30mm) was divided into two random subgroups and assessed with conventional (a single dynamic image on the screen, 31 lesions) and side-by-side CEUS (two simultane…