A novel technology that serves as a "flight simulator" for neurosurgeons is being used before surgery, allowing the physicians to rehearse complicated brain surgeries before making an actual incision on a patient. The new simulator creates an individualized walkthrough based on 3D imaging taken from the patient's CT and MRI scans. Surgeons then plan and rehearse the surgeries using the unique software, which combines life-like tissue reaction with accurate modeling of surgical tools and clamps, to enable them to navigate multiple-angled models of a patient's brain and vasculature.