Table 1 Normal values for kidney length pole to pole, cortical and parenchymal width, classified according to the side of the kidney
Side | Mean | Median | SD | p (Wilcoxon test) | |
|---|---|---|---|---|---|
Kidney length | right | 108.5 | 108 | 12.2 | <0.0001 |
left | 111.3 | 111 | 12.6 | ||
Parenchymal width | right | 15.4 | 15.4 | 2.8 | <0.0001 |
left | 15.8 | 15.8 | 2.7 | ||
Cortical width | right | 6.6 | 6.5 | 1.9 | >0.05 (ns) |
left | 6.6 | 6.5 | 2.0 | ||
Width (axial planes) | right | 51.3 | 50.8 | 7.8 | <0.0001 |
left | 53.3 | 52.9 | 8.2 | ||
Length (axial planes) | right | 57.7 | 57.4 | 8.0 | <0.0001 |
left | 53.6 | 52.9 | 8.2 | ||
Width of the pyelon | right | 18.5 | 17.6 | 6.2 | <0.0001 |
left | 19.9 | 19.1 | 6.3 | ||
Position of the midpoint of the renal pelvis | right | 2.2 | 2.2 | 0.7 | <0.0001 |
left | 2.1 | 2.1 | 0.6 | ||
Position of the upper pole of the right kidney | right | 0.6 | 0.6 | 0.8 | <0.0001 |
left | 0.4 | 0.5 | 0.9 | ||
Rotation status in sagittal planes (upper pole versus lower pole in relation to a reference coronal plane) | right | 25.8 | 25.3 | 11.1 | >0.05 (ns) |
left | 24.3 | 11.0 | 23.8 | ||
Rotation status of the renal pelvis in the axial plane, in relation to the reference sagittal median plane | right | 60.3 | 58.4 | 18.1 | <0.0001 |
left | 53.5 | 49.0 | 22.5 | ||
Parenchym/pyelon ratio | right | 0.9 | 0.9 | 0.4 | >0.05 (ns) |
left | 0.9 | 0.8 | 0.5 |