Table 2.

Mean values and standard deviation (SD) of perfusion and spectroscopy parameters in the differentiation of brain tumours.

Oncotype of lesions	rCBV	PSRmax	Cho/Cr	Cho/Naa	Lact/Cr	Lip/Cr
PCNSLs	1.8536 ± 0.503	107.145 ± 13.305	3.283 ± 1.3449	2.415 ± 1.345	2.469 ± 1.333	3.039 ± 1.582
GBMs	2.470 ± 0.998	85.522 ±12.456	2.932 ± 1.337	3.157 ± 1.337	1.796 ± 0.929	4.167 ± 2.245
METs	1.655 ± 1.057	86.647 ± 26.853	2.196 ± 1.342	-*	0.807 ± 0.917	6.193 ± 2.004
P (anova)	< 0.001	< 0.001	<0.001	<0.001	<0.001	<0.001
F (anova)	18.216	27.908	10.985	110.194	36.691	45.659
P PCNSLs vs GBM	< 0.001	< 0.001	0.149	0.006	<0.001	0.001
P PCNSLs vs METs	0.191	< 0.001	<0.001	–	<0.001	<0.001
P GBM vs METs	< 0.001	0.811	0.013	–	<0.001	<0.001

*No measurable NAA peaks at 2.02 ppm in METsastases.