Table 5.

Comparison of cerebral perfusion between post-operative and follow-up in 23 patients

Number	Index	Post-operation	Follow-up	t value	P value
23	CBF	32.43 ± 5.65	33.96 ± 5.27	−4.041	0.001
23	MTT	9.78 ± 2.30	9.35 ± 1.99	2.472	0.022