tractography
Advanced MRI technique that visualizes white matter fiber tracts to guide surgical planning and preserve neural pathways.
Full Definition
Tractography is an advanced neuroimaging technique that uses diffusion tensor imaging (DTI) data to reconstruct and visualize white matter fiber tracts in three dimensions. In neurosurgical oncology, tractography is invaluable for preoperative planning and intraoperative guidance, allowing surgeons to identify critical neural pathways such as the corticospinal tract, arcuate fasciculus, and optic radiations in relation to tumor location. This technology helps determine optimal surgical approaches, predict potential functional deficits, and guide maximum safe resection strategies. Tractography can demonstrate tract displacement, infiltration, or disruption by tumors, enabling more informed surgical decision-making. The technique is particularly useful for tumors located near or within eloquent white matter regions.
Usage
Usage note: Often used with DTI; results should be interpreted with caution near tumor tissue.
In Context
- "Tractography revealed displacement of the corticospinal tract medial to the tumor margin." — preoperative imaging report
- "Surgical planning incorporated tractography data to avoid injury to language pathways." — multidisciplinary planning