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