The authors present a method for applying sterile surgical tape to neurosurgical instruments
(suckers and/or ultrasonic surgical implements) as depth gauges in brain tumor surgery.
This simple and inexpensive modification is helpful in the achievement of gross anatomic
orientation in situations where it is difficult to find anatomic landmarks, e.g.,
with initial detachment of large meningiomas from the dura in the deep region.
Instrumentation - depth gauge - navigation - brain tumors