TABLE 2

Mathematic Parameters for Regions of Kidney Model for All Ages (cm)

Kidney region parameterNewborn1 y5 y10 y15 yAdult
Outer shape of kidneys
 aKi1.792.613.203.664.054.50
 bKi0.931.251.401.471.531.50
 cKi1.702.413.203.994.965.50
 xKi−01.912.643.444.175.186.00
 yKi−02.943.904.505.045.886.00
 zKi−010.0014.3018.9023.6029.3032.50
 xKi−10.710.951.311.742.483.00
Medullary pyramids
 aMe−v0.600.871.071.221.351.50
 bMe−v0.400.540.610.640.660.65
 cMe−v0.871.231.632.032.532.80
 zMe−v1zKi−0 + 1.24zKi−0 + 1.75zKi−0 + 2.33zKi−0 + 2.90zKi−0 + 3.61zKi−0 + 4.00
 zMe−v2zKi−0 − 1.24zKi−0 − 1.75zKi−0 − 2.33zKi−0 − 2.90zKi−0 − 3.61zKi−0 − 4.00
 aMe−X1.392.032.492.853.153.50
 bMe−X0.620.830.930.981.021.00
 cMe−X0.620.881.161.451.802.00
 xMe−X3.104.395.576.617.889.00
 aMe−Y0.560.811.001.141.261.40
 bMe−Y0.470.630.700.740.770.75
 cMe−Y0.771.101.451.812.252.50
 yMe−Y1yKi−0 + 0.62yKi−0 + 0.83yKi−0 + 0.93yKi−0 + 0.98yKi−0 + 1.02yKi−0 + 1.00
 yMe−Y2yKi−0 − 0.62yKi−0 − 0.83yKi−0 − 0.93yKi−0 − 0.98yKi−0 − 1.02yKi−0 − 1.00
Medullary papillae
 dPa0.100.120.140.160.190.20
Renal pelvis
 aPel0.881.281.561.791.982.20
 bPel0.280.380.420.440.460.45
 cPel0.771.101.451.812.252.50
 xPel1.431.962.593.204.104.80