Display of Images

The working computer display screen for computer-aided endoscopic sinus surgery is divided into four quadrants. Three quadrants simultaneously show grayscale two-dimensional coronal, sagittal, and axial sectional images reconstructed from the preoperative CT scan (Anon et al., 1997; Klimek et al., 1998). The tip of the probe is depicted by crosshairs on these images (Fig. 10.35). The fourth quadrant can be used to display the endoscopic image or alternatively, in newer systems, it can show a three-dimensional reconstructed model.

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