Description of Parameters Used in Mathematic Equations of Kidney Regions
| Kidney region parameter | Description |
|---|---|
| Outer shape of kidneys | |
| aKi | Half X-axis of each kidney |
| bKi | Half Y-axis of each kidney |
| cKi | Half Z-axis of each kidney |
| xKi−0 | X-position of center of left kidney |
| yKi−0 | Y-position of center of each kidney |
| zKi−0 | Z-position of center of each kidney |
| xKi−1 | X-limit for each kidney* |
| Medullary pyramids | |
| aMe−v | Half X-axis of each vertical pyramid |
| bMe−v | Half Y-axis of each vertical pyramid |
| cMe−v | Half Z-axis of each vertical pyramid |
| zMe−v1 | Z-position of center of superior vertical pyramid |
| zMe−v2 | Z-position of center of inferior vertical pyramid |
| aMe−X | Half X-axis of each horizontal pyramid oriented along x-axis |
| bMe−X | Half Y-axis of each horizontal pyramid oriented along x-axis |
| cMe−X | Half Z-axis of each horizontal pyramid oriented along x-axis |
| xMe−X | X-position of center of left horizontal pyramid oriented along x-axis |
| aMe−Y | Half X-axis of each horizontal pyramid oriented along y-axis |
| bMe−Y | Half Y-axis of each horizontal pyramid oriented along y-axis |
| cMe−Y | Half Z-axis of each horizontal pyramid oriented along y-axis |
| yMe−Y1 | Y-position of center of each posterior horizontal pyramid oriented along y-axis |
| yMe−Y2 | Y-position of center of each anterior horizontal pyramid oriented along y-axis |
| Medullary papillae | |
| dPa | Thickness of papilla layer at its apex |
| Renal pelvis | |
| aPel | Half X-axis of each renal pelvis |
| bPel | Half Y-axis of each renal pelvis |
| cPel | Half Z-axis of each renal pelvis |
| xPel | X-position of center of left renal pelvis |
↵* Defines cutting plane exposing renal pelvis at medial side of organ.