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Development of Patient-Specific 3-Dimensional Graphical Entry-Point Maps for External Ventricular Drain Insertion.
Katherine Beaulieu1, Ryan Alkins2, Randy E Ellis3
1School of Computing, Queen's University, Kingston, Ontario, Canada.
World Neurosurgery
|May 9, 2025
Summary
A new visualization method improves external ventricular drain (EVD) insertion accuracy by identifying optimal skull entry points. This technique enhances surgical precision and confirms current EVD placement standards.
Area of Science:
- Neurosurgery
- Medical Imaging
- Surgical Planning
Background:
- External ventricular drains (EVDs) are crucial for managing intracranial pressure.
- Free-hand EVD insertion has suboptimal accuracy (40-50%), increasing complication risks.
- Non-ideal insertion trajectories necessitate improved surgical guidance.
Purpose of the Study:
- To develop a patient-specific visualization method for optimizing EVD insertion points.
- To identify skull regions yielding successful EVD placement.
- To evaluate the feasibility of the novel visualization technique.
Main Methods:
- A visualization method was developed using 90 patient cases.
- The method identifies successful EVD insertion regions on the skull.
- Precalculated trajectory uncertainties were incorporated into the analysis.
Main Results:
- The visualization method demonstrated feasibility in identifying optimal trajectories.
- A significant difference in insertion success rates was observed between patient groups.
- Calculated average catheter lengths aligned with previously reported EVD study ranges.
Conclusions:
- A novel patient-specific visualization paradigm enhances EVD insertion point optimization.
- The tool identifies new, effective insertion sites.
- The visualization method validates existing standard-of-care EVD insertion points.
