Table 2.

Differences in kidney volume, when measured using T1 or T2 weighted images

	Volumes (mL)		Differences in volume (mL) [T1–T2]			Differences in volume (%) [(T1 − T2)/average T1|T2 × 100]
	T1	T2	Bias	Precision	P value	Bias	Precision	P value
Left kidney	1015 [657–1260]	1012 [648–1333]	−7.2	81.4	0.6	−0.2	5.7	0.7
Right kidney	846 [512–1188]	874 [513–1246]	−24.0	63.4	<0.001	−1.5	7.0	0.06
Total kidney	1932 [1180–2551]	1867 [1172–2721]	−31.2	119.2	0.006	−0.8	5.1	0.2

Values are given as median [IQR]. P values are calculated using a paired Wilcoxon signed-rank test for absolute differences; for percentage differences a one sample T test was used