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Updated: Jul 16, 2026
Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Endoscopic pituitary surgery with and without image guidance: an experimental comparison
Jian Gong1, Gérard Mohr, Jean L Vézina
1Division of Neurosurgery, Laboratory of Experimental Neurosurgery, Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, Quebec, Canada. jg9uv@virginia.edu <jg9uv@virginia.edu>
Image guidance in endoscopic pituitary surgery (EPS) offers millimetric accuracy, enhancing surgical precision and safety. This technology significantly reduces operating time in cases with anatomical variations, improving patient outcomes.
Area of Science:
- Neurosurgery
- Surgical Technology
- Medical Imaging
Background:
- Endoscopic pituitary surgery (EPS) is evolving with image guidance integration.
- Assessing the impact of image guidance on surgical outcomes is crucial.
- Experimental evaluation of image guidance in pituitary surgery is a novel trend.
Purpose of the Study:
- To evaluate the accuracy and precision of image guidance in endoscopic pituitary surgery.
- To compare surgical time and critical step execution with and without image guidance.
- To determine the impact of image guidance on surgical safety and efficiency.
Main Methods:
- Twenty cadaver heads underwent standard endoscopic transsphenoidal surgery.
- System accuracy and visual accuracy were quantified using optic-radiologic correlations.
- Surgical steps and anatomical parameters were measured and compared with and without image guidance.
Main Results:
- Image guidance system accuracy was 0.28 +/- 0.06 mm (root mean square).
- Actual visual accuracy averaged 1.53 +/- 0.49 mm, with a maximum discrepancy of <7%.
- Surgical time was significantly reduced with image guidance in cases with anatomical variations.
Conclusions:
- Electromagnetic tracking image guidance provides high, millimetric accuracy for localization and orientation in EPS.
- Neuronavigation enhances surgical orientation, leading to safer and more efficient procedures.
- Image-guided EPS offers reliable stereoinformation, improving outcomes and reducing risks in complex or reoperative pituitary surgeries.
