Transplant renal artery stenosis (TRAS) is a less common but important etiology of renal dysfunction following transplantation. It is of great importance to include TRAS in the differential diagnosis for allograft dysfunction early after transplantation. We used ASL combined with 2D-PC Q-flow MRI to assess hemodynamic changes of TRAS. The results reflected that there were differences in the mean flux and velocity of the stenotic segment of transplant renal artery and renal allograft perfusion between different degrees of TRAS, and the mean flux and velocity were more closely related to the degree of TRAS compared with renal allograft perfusion.
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