Figure 21. 99mTc-MAG3 scan in a normal renal transplant. Perfusion (A) is normal. There is excellent uptake and rapid excretion seen in both the sequential images (B) and the renogram curve (C).

inhibitor challenge. Such a finding should be interpreted as having an intermediate probability for renovascular hypertension.

Clinical Role in the Renal Transplant Patient


Causes of renal failure in the renal transplant patient depend upon when they occur in relation to the transplant procedure. In the immediate post-operative period,

Figure 22. 99mTc-MAG3 scan in a renal transplant with moderate acute tubular necrosis (ATN). Perfusion (A) is normal. On the sequential images (B), initial uptake is good and there is excretion by 3-4 minutes. Parenchymal retention in the kidney is seen at the end of the study. The persistent activity can be appreciated on the renogram curve (C).

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