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KMID : 0896020090390030149
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Korean Journal of Oral and Maxillofacial Radiology
2009 Volume.39 No. 3 p.149 ~ p.156
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Development and application of stent-based image guided navigation system for oral and maxillofacial surgery
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Lee Woo-Jin
Kim Dae-Seung
Lee Won-Jin
Lee Sam-Sun
Choi Soon-Chul
Heo Min-Suk
Huh Kyung-Hoi
Kim Myung-Jin
Lee Jee-Ho
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Abstract
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Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites.
Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality.
Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites.
Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites.
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KEYWORD
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Image Guided Navigation Surgery, Stent, Optical tracking system, Image guided implant, Oral and maxillofacial surgery
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