Duplex-Doppler ultrasound of intrarenal arteries in the assessment of the percutaneous transluminal angioplasty of renal artery stenosis - A case report

A case is presented where the color duplex-Doppler sonography of intrarenal arteries was used for the assessment of success of percutaneous transluminal angioplasty of renal artery stenosis. Spectral waveform analysis from intrarenal arteries in a case of angiographically proven renal artery stenosis, with the diameter reduction >80%, has shown spectra with prolonged systolic acceleration time and increased diastolic flow (parvus and tardus type). After the angioplasty had been performed intrarenal arterial spectra have returned to normal forms, with normal systolic acceleration time and normal diastolic flow. Duplex-Doppler spectral analysis can be used for the assessment of the outcome of percutaneous transluminal angioplasty in cases of hemodynamically significant renal artery stenosis.