Fig. 2
From: Corticomedullary shunting after ischaemia and reperfusion in the porcine kidney?
Comparison of methods for the study of distribution of radio-labeled microspheresThe figure shows a positive correlation between visual distribution score grade 1–3 and the measured fraction of microspheres in the central kidney including medulla relative to the entire kidney (r2 = 0.98). Differences between 2 and 4 h ischaemia is marginally significant (p ~ 0.08). Grade 0 is a homogeneous pattern similar to control kidneys and Grade 3 is a pattern clearly showing the medullary architecture and the anatomical outline of calyces