Computer-Assisted Neurosurgery by Gene H. Barnett, Robert Maciunas, David Roberts

By Gene H. Barnett, Robert Maciunas, David Roberts

Richly illustrated to show off the simplest practices, surgical equipment, and tactics for tricky occasions in neurosurgery, this reference demonstrates recommendations to regulate mind metastases, intracranial gliomas and meningiomas, pituitary sector tumors, and intracranial vascular malformations; spinal operations; and surgical procedures of the cranium base with sleek navigation and image-guidance applied sciences.

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25. Tan KK, Grzeszczuk R, Levin DN, Pelizzari CA, Chen GTY, Erickson RK, Johnson D, Dohrmann GJ. A frameless stereotactic approach to neurosurgical planning based on retrospective patient-image registration. Technical note. J Neurosurg 1993; 79:296–303. 26. Pelizzari CA, Levin DN, Chen GTY, Chen C-T. Image registration based on anatomic surface matching. In: Maciunas RJ, ed. Interactive Image-Guided Surgery. Chap. 4. AANS, 1993:47–62. 27. Friets EM, Strohbehn JW, Roberts DW. Curvature-based nonfiducial registration for the frameless stereotactic operating microscope.

The rotation corresponds to the view of the operator down the wand axis, and the default depth is at the tip of the localizing wand. The distance CHAPTER 3: TARGET AND TRAJECTORY GUIDANCE & 39 Figure 1 Triplanar display of coronal, sagittal, and transverse planes with a common vertex. or depth from the tip of the want to the surgeon’s view can be ‘‘pushed’’ deeper or ‘‘pulled’’ more superficial by the surgeon using either a mouse or foot pedal. Two other images, both containing and displaying the localizing axis of the pointing device and perpendicular to each other, are generated in real time, thereby creating a display with three mutually orthogonal images (‘‘multiplanar obliques’’ or MPR) although usually not parallel to the principal axis of the data set (Fig.

This methodology has subsequently been published and incorporated into at least one commercial surgical navigation system (14). LOCALIZATION AND ORIENTATION The CAMIS system provides two display motifs. , images parallel to coronal, sagittal, and transverse planes) and is typically used in surgery for purposes or real-time localization (Fig. 1). The manual selection of this vertex can be accomplished through the use of a mouse cursor, the localizing wand, or slider controls on screen. Placing the cursor over a point on any of the three orthogonal images and pressing a mouse button causes the system to extract and display the two other images that are perpendicular to the current image and parallel to the principal axis of the data set.

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