cortical mapping
Intraoperative technique to identify functional brain areas to guide safe tumor resection and avoid neurological deficits.
Full Definition
Cortical mapping is an essential intraoperative technique used to identify and preserve functionally important brain regions during neurosurgical procedures. The technique involves direct electrical stimulation of the cortical surface to elicit specific responses, allowing surgeons to delineate motor, sensory, and language areas. Mapping can be performed using monopolar or bipolar stimulation probes, with responses monitored through neurological examination (in awake patients) or electrophysiological monitoring. This technique is particularly valuable when operating near eloquent cortex for tumor resection, epilepsy surgery, or vascular procedures. The information obtained guides surgical decision-making and helps achieve maximal safe resection while preserving neurological function.
Usage
Usage note: Specify the type of function being mapped (motor, sensory, language) when relevant.
In Context
- "Cortical mapping identified the motor strip 2 cm anterior to the tumor margin." — Operative report
- "Language mapping confirmed preservation of Broca's area during tumor resection." — Awake craniotomy report