Figure 4

Example of microcirculatory changes as seen with contrast-enhanced ultrasound images taken during a contrast-enhanced ultrasound study performed on a patient with chronic liver disease and hepatorenal syndrome. The image is centered on the patient's right kidney. Two images are shown: the first (a) was taken just before the intravenous administration of 1 mg of terlipressin and the second (b) 2 hours after. This study demonstrates increased renal perfusion in response to terlipressin administration, as indicated by a brighter signal within the renal cortex on the right image.