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[Image-guided endoscopic sinus surgery: a comparison of two navigation systems]
Satoshi Seno1, Mikio Suzuki, Hironori Sakurai
1Department of Otolaryngology, Shiga University of Medical Science, Otsu.
Nihon Jibiinkoka Gakkai Kaiho
|December 20, 2005
Summary
Both intraoperative navigation systems (NS) and image-guided navigation systems (IGNS) are effective for endoscopic sinus surgery (ESS). Intraoperative NS offers real-time imaging but requires longer setup, while IGNS uses preoperative images and allows broader instrument compatibility.
Area of Science:
- Otolaryngology
- Medical Imaging
- Surgical Navigation
Background:
- Endoscopic sinus surgery (ESS) benefits from advanced navigation systems.
- Two systems evaluated: Signa SP/i Intraoperative navigation system (NS) and Stealth Station TREON Image-Guided Navigation System (IGNS).
- Intraoperative NS provides real-time, high-resolution imaging, unlike IGNS's reliance on preoperative 3D images.
Purpose of the Study:
- To compare the effectiveness of intraoperative NS and IGNS in ESS.
- Evaluate additional implementation time, instrument compatibility, and accuracy of both systems.
Main Methods:
- 14 patients treated with intraoperative NS, 19 with IGNS.
- Measured time from admittance to operating room to surgery onset.
- Assessed instrument compatibility with magnetic fields and system accuracy (average distant error).
Main Results:
- Intraoperative NS required an additional 52 minutes setup; IGNS required 17 minutes compared to controls.
- Intraoperative NS had limitations due to magnetic fields, requiring MR-safe instruments; IGNS allowed all ESS instruments.
- Both systems visualized anatomic landmarks accurately, with average distant errors between 1-2.5 mm, suitable for ESS.
Conclusions:
- Both intraoperative NS and IGNS are accurate and sufficient for ESS.
- Intraoperative NS offers real-time image updates during surgery.
- System selection for ESS should be based on individual patient needs and surgical considerations.