Table 3.

Results of Kruskal-Wallis tests comparing dynamic susceptibility-contrast MRI parameters between children who received any type of contrast agent pre-bolust versus those who did not receive a contrast agent pre-bolus

Pre-bolus contrast agent	Mean±SD
	Uncorrected median rCBV	Corrected median rCBV	Median K2
Y	1.49±5.48	2.20±1.78	0.016±0.033
N	0.49±2.50	2.04±1.21	0.005±0.039
P-valuea	0.015	0.978	0.013

K₂ leakage parameter, N no, rCBV relative cerebral blood volume, SD standard deviation, Y yes

n=76 because injection protocol information was not available for 9 children

^aP value <0.05 is significant (bold)