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TABLE 3: Comparison of relative cerebral blood volume and vascular permeability measurements in patients with primitive neuroectodermal tumors with low grade gliomas (grade II/IV) and high grade gliomas (grade III/IV and IV/V)
Tumor Type rCBV SD K^trans SD
PNET (n = 12) 4.76 1.99 0.0033 0.0035
Low grade glioma (n = 30) 2.14 1.67 0.0005 0.001
P value <.0005 <.05 
High grade glioma (n = 55) 5.82 3.57 0.0016 0.003
P value 0.53 0.19 
Note.—rCBV indicates relative cerebral blood volume; K^trans, vascular permeability (s⁻¹); PNET, primitive neuroectodermal tumor.

Tumor Type	rCBV	SD	K^trans	SD
PNET (n = 12)	4.76	1.99	0.0033	0.0035
Low grade glioma (n = 30)	2.14	1.67	0.0005	0.001
P value	<.0005		<.05
High grade glioma (n = 55)	5.82	3.57	0.0016	0.003
P value	0.53		0.19