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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}
Note:—–NAA was undetectable at 2.02 ppm in metastases.
↵a Significant.