Table IV.

The relationship between imaging manifestations and surgical resection.

		Surgical classification
The invasive region of meningioma	Cases	Simpson grade I	Simpson grade II	Simpson grade III	The invasive cases shown by imageological examination
Cerebral convexity	18	18	0	0	8
Surrounding area of parasagittal region of cerebral falx	17	4	12	1	11
Surrounding area of transverse sinus and sigmoid sinus	8	2	6	0	6
Skull	6	3	3	0	3
Large blood and vessels	4	0	1	2	4
Cavernous sinus	4	0	2	3	4
Periorbital region	1	0	1	0	1
The infiltration of brain	1	1	0	0	0
In total	59	56	25	6	37