Table 1:

Mean values of perfusion parameters and spectroscopic concentration ratios in differentiating brain tumors

Oncotype of Lesions/P and F Values	rCBV	PSR_max	Cho/Cr	Cho/NAA	Lac/Cr	Lip/Cr
PCNSL	2.126 ± 0.335	106.857 ± 19.165	3.092 ± 1.752	2.007 ± 1.613	2.529 ± 2.334	3.379 ± 4.522
GBM	3.573 ± 0.851	74.857 ± 7.564	2.723 ± 0.732	3.703 ± 0.878	2.297 ± 1.102	2.865 ± 3.371
Metastases	2.445 ± 0.805	60.545 ± 7.634	1.568 ± 0.282	–	0.186 ± 0.336	6.346 ± 3.533
P (ANOVA)	<.001^{^a}	<.001^{^a}	.009^{^a}	.001^{^a}	.003^{^a}	.07
F (ANOVA)	26.083	45.876	5.208	13.024	6.680	2.712
P PCNSL vs GBM	<.001^{^a}	<.001^{^a}	.40	.001^{^a}	.73	.70
P PCNSL vs metastases	.15	<.001^{^a}	.002^{^a}		.001^{^a}	.04^{^a}
P GBM vs metastases	<.001^{^a}	.02^{^a}	.03^{^a}		.001^{^a}	.03^{^a}