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Table 2: PCT parameters and P values for the various subgroups
Group (No. of Patients) nCBV nCBF nMTT
Mean (SD) Mean (SD) Mean (SD)
Low Grade (5) 1.44 (0.42) 1.16 (0.36) 1.69 (1.12)
High Grade (III and IV) (14) 3.06 (1.35) 3.03 (2.16) 1.29 (0.55)
P value 0.005 0.045 0.559
Grade III (6) 2.95 (1.39) 2.63 (2.30) 1.61 (0.58)
Grade IV (8) 3.14 (1.40) 3.33 (2.15) 1.05 (0.40)
P value for Low vs III 0.03 0.177 0.792
P value for Low vs IV 0.01 0.048 0.222
P value for III vs IV 0.949 0.572 0.081

Group (No. of Patients)	nCBV	nCBF	nMTT
Group (No. of Patients)	Mean (SD)	Mean (SD)	Mean (SD)
Low Grade (5)	1.44 (0.42)	1.16 (0.36)	1.69 (1.12)
High Grade (III and IV) (14)	3.06 (1.35)	3.03 (2.16)	1.29 (0.55)
P value	0.005	0.045	0.559
Grade III (6)	2.95 (1.39)	2.63 (2.30)	1.61 (0.58)
Grade IV (8)	3.14 (1.40)	3.33 (2.15)	1.05 (0.40)
P value for Low vs III	0.03	0.177	0.792
P value for Low vs IV	0.01	0.048	0.222
P value for III vs IV	0.949	0.572	0.081