"Ultrasound is usually performed in this setting to assess the renal parenchyma and exclude other causes of obstruction. In acute tubular necrosis, the kidneys usually have a normal appearance on ultrasound, but may be enlarged (especially in AP diameter) and increased echogenicity due to interstitial oedema4,5."
"Doppler colour ultrasound usually shows elevated resistive index (RI) ≥ 0.75, however this finding is not pathognomonic of acute tubular necrosis4."
"Renography can help differentiate acute tubular necrosis from other causes of renal failure such as renal cortical necrosis. It is also often used to evaluate renal transplants when there is a suspicion for acute tubular necrosis of the transplant. Renal perfusion is preserved during angiographic phase with a gradual increase of radiotracer in renal parenchyma due to minimal or absent excretion1."
"Ultrasound is usually performed in this setting to assess the renal parenchyma and exclude other causes of obstruction. In acute tubular necrosis, the kidneys usually have a normal appearance on ultrasound, but may be enlarged (especially in AP diameter) and increased echogenicity due to interstitial oedema4,5."
Expected headings
"Fluoroscopy / CT urography"