Fig. 16From: Contrast-enhanced ultrasound (CEUS) in Crohn’s disease: technique, image interpretation and clinical applicationsA 24-year-old woman with CD. a CEUS before treatment with the anti-TNF drug shows marked enhancement in the involved loop (the absolute and percentage of enhancement increases were 96 and 168, respectively). b CEUS examination depicts a reduction of the enhancement (percentage increase of 59%) in the same loop following the induction treatment with anti-TNFBack to article page