Figure 1

(A1–A3) Brain MRI enhancement showed left frontal meningioma; (A4) use the Apple mobile phone APP MosoCam for projection positioning; (A5) the surgical incision was designed according to the projection location; (A6) intraoperative neuroendoscopic brain tumor; (A7) total tumor specimens; (A8) postoperative brain CT showed that the tumor was resected cleanly without delayed bleeding; (A9) brain CT showed the size of bone window.