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Medical Imaging: Computer-Assisted Surgery
May/June 1990 (vol. 10 no. 3)
pp. 43-51

Computer-assisted surgery (CAS), a new navigation aid for skull-base surgery, is discussed. The system described combines 3-D coordinate measurement techniques, voxel processing methods, and pseudo-3-D image presentations to support preoperative planning of therapy, path-finding during the operation itself, and postoperative therapy control. The surgeon employs a hand-guided electromechanical 3-D-coordinate digitizer to locate points of interest within the operative field. The coordinates measured this way are correlated with a voxel model of the object gained by a preceding computed-tomography examination. With a prototype system the accuracy of this method has proven to be better than +or-1 mm. The system has been successfully applied in more than 60 ear-nose-throat operations and four neurosurgical procedures. The computer hardware and integration of the system into an experimental picture archiving and communication system are discussed.

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Ludwig Adams, Werner Krybus, Dietrich Meyer-Ebrecht, Rainer Rueger, Joachim M. Gilsbach, Ralph Moesges, Georg Schloendorff, "Medical Imaging: Computer-Assisted Surgery," IEEE Computer Graphics and Applications, vol. 10, no. 3, pp. 43-51, May-June 1990, doi:10.1109/38.55152
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