Table 1.
Changes in the renal long-diameter after right kidney UUO in experimental rabbits.
Fig 1.
Results of RDI on the 3rd day for right UUO in experimental rabbits.
A, Blood flow perfusion phase, showing a moderate reduction in right renal perfusion and that the peak of perfusion was delayed by 6–9 s in comparison with the left kidney. B, Renal function phase, showing a slight swelling in the right kidney and a normal distribution in the left kidney, in which the radioactivity level was gradually decreased from the center to the two poles; a uniform distribution is shown in the right kidney that is different from that of the left kidney.
Fig 2.
Results of RDI on the 7th day for right UUO in experimental rabbits.
A, Blood flow perfusion phase, showing the normal perfusion of the right kidney, which is similar to that in the left kidney. B, Renal function phase, showing a mild radiotracer decrease in the right renal pelvis and mild swelling in the right kidney. C, Quantitative parameters and renogram curves. The left glomerular filtration rate (GFR) was 53.4 ml/min, the right GFR was 37.4 ml/min, and the right kidney curve presented a continuous rise. D, Drawing of the renal region of interest (ROI) and the background ROI.
Fig 3.
Results of RDI on the 21st day for right UUO in experimental rabbits.
A, Blood flow perfusion phase, showing a severe reduction in right renal perfusion and that the peak in perfusion was delayed in comparison with the left kidney. B, Renal function phase, showing an obvious radiotracer decrease in the right renal pelvis and the swelling of the right kidney.
Fig 4.
Results of RDI on the 69th day for right UUO in experimental rabbits.
A, Blood flow perfusion phase, showing a lack of early perfusion in the right kidney and that the right renal perfusion was obviously slower and delayed in comparison with the left kidney. B, Renal function phase, showing the obvious swelling of the right kidney and a lack of radiotracer distribution in the right renal pelvis.
Table 2.
Relationship between the grading of blood flow perfusion and the obstruction duration in the obstructed kidney after UUO (number of animals).
Fig 5.
Results of RDI on the 28th day for right UUO in experimental rabbits.
A, Blood flow perfusion phase, showing a moderate reduction in right renal perfusion and that the perfusion peak of the right kidney was delayed by approximately 6 s in comparison with left kidney. B, Renal function phase, showing a lack of radiotracer distribution in the right renal pelvis and obvious swelling in the right kidney. C, Quantitative parameters and renogram curves. The left GFR was 44.9 ml/min, the right GFR was 50.1 ml/min and the curve of the right kidney presents roughly a type of high-level extension line. D, Drawing of the renal ROI and the background ROI.
Fig 6.
Comparison of the kidney size between the 28th and 82nd day of right UUO in the same rabbit.
A, On the 28th of obstruction, 1 shows the blood flow perfusion phase, and 2 shows the renal function phase; the right renal area size was 1959.2mm2, the right renal long-diameter was 53.8 mm and the short-diameter was 39.8 mm. B, On the 82nd of obstruction, 1 shows the blood flow perfusion phase, and 2 shows the renal function phase; the right renal area size was 1044.9mm2, the right renal long-diameter was 38.7 mm and the short-diameter was 27.3 mm. The results show that the right kidney got smaller on the 82nd day in comparison with the 28th day of obstruction.
Table 3.
Relationship between the grading of the renal radiotracer distribution and the obstruction duration after UUO (number of animals).
Table 4.
Results for the early uptake rate (%) of kidneys in experimental rabbits.