There are circumstances in which image guidance is clearly useful to facilitate a more complete operation. By confirming the identity of known anatomic structures, a knowledgeable surgeon's understanding of the disease process can improve and only the necessary structures removed. CT guidance is a clear aid to understanding altered anatomy when combined with a thorough analysis of the preoperative CT scan and office nasal endoscopy. It is the combination of this preoperative planning with image guidance that allows a skilled surgeon to operate with confidence. This discussion intentially did not refer to image guidance as the standard of care, because although this technology is clearly useful, valuable, and helpful in confirming anatomy and performing many procedures, it is not always necessary in achieving a complete operation. Therefore, it should not be considered the standard of care.
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