Prediction Efficiency of Postoperative Acute Kidney Injury in Acute Stanford Type A Aortic Dissection Patients with Renal Resistive Index and Semiquantitative Color Doppler
Table 1
Semiquantitative color Doppler scale in renal perfusion.
Grade 0
Unidentifiable vessels
Grade 1
Few vessels visible in the vicinity of the hilum
Grade 2
Hilar and interlobar vessels visible in most of the renal parenchyma
Grade 3
Renal vessels identifiable until the arcuate arteries in the entire field of view