Role for contrast-enhanced ultrasound in assessing complications after kidney transplant

Figure 6 Rejection in a 58-year-old man who underwent two different renal transplants with a 4-year interval. A and B: After 1 mo from kidney transplantation, the left-sided retransplanted kidney showed homogeneous parenchymal enhancement on contrast-enhanced ultrasound (CEUS) examination (A), with rapid time-to-peak on the corresponding time-intensity curve (B); C: The contralateral first kidney in the right iliac fossa was affected by chronic rejection. D: CEUS showed weaker and inhomogeneous contrast enhancement as compared to the left-sided graft, with lower and delayed peak of contrast enhancement.