Renal artery stenosis on captopril renal MAG3 nuclear study

Discussion:

Captropril studies are reported according to the probability of RAS, with high probability findings being:

  • unilateral parenchymal retention of MAG3
  • deterioration in the renogram curve +/- relative function of the affected kidney following captopril compared to baseline
  • prolongation of time to peak of 120s
  • change in split function >10%

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