Figure 1

Preoperative DSA (A,B) demonstrates feeding artery and draining vein in the left temporal AVM; three-dimensional restructure (C) shows that left posterior cerebral artery aneurysm has merged into AVM (shown by arrow); Preoperative planning (D) indicates the three dimensional spatial position relationship between lesions and functional configuration; (E) displays the projections of lesions and functional configuration in the scalp; (F) exhibits the projection of aneurysm marked in intra-operative navigation under the microscope; Postoperative DSA (G–I) illustrates the whole removal of AVMs and successful occlusion of aneurysm.