Abstract
Objective: Fluoroscopic navigation technique in transsphenoidal surgery on the one hand provides
multi-planar (antero-posterior and lateral views) navigation while on the other hand
it does not need any preoperative preparation. To assess the clinical accuracy of
the above technique in the transsphenoidal surgery, we performed this study.
Methods: 5 patients undergoing transsphenoidal surgery were assessed. Fluoroscopic images
were compared with C-arm X-ray images for difference in spatial position and trajectory.
Results: 26 sets of data were collected for analysis. Mean pointer tip difference was 0.6
mm. The 95 % confidence interval was 1.3 mm. Mean trajectory difference was 1.2 degree.
The 95 % confidence interval was 2.7 degree.
Conclusion: With a good clinical accuracy, fluoroscopic navigation offers a distinct advantage
to replace the traditional fluoroscopic approach for transsphenoidal surgery for its
low X-ray exposure and multi-planar (antero-posterior and lateral views) navigation.
Key words
Fluoroscopic navigation - transsphenoidal surgery - accuracy
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W. S. Poon,FRCS
Division of Neurosurgery · Department of Surgery · Prince of Wales Hospital
Shatin
New Territories
Hong Kong SAR
China
Phone: + 852-2632-2624
Fax: + 852-2637-7974
Email: wpoon @surgery.cuhk.edu.hk
