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Ultrasound (US) of a jejunal segment with a thickened bowel wall.Contrast-enhanced ultrasound: the region of interest (ROI) is determined (A) when the contrast medium first appears in the affected bowel wall corresponding to starting point at time-intensity curve, (B) when the maximum enhancement was seen corresponding to peak at time-intensity curve. The calculated time-to-peak is 5 seconds (18.5 sec to 23.5).Postprocesing results obtained from raw data imported in workstation with dedicated quantification software (Workstation UltraExtend FX with IGR protocol): (A) Time-intensity curve (TIC), and (B) the table of results of the calculated quantitative kinetic parameters from TIC.