Summary
We have tested a prototype infrared guided computerized navigation system (SPOCS; Aesculap/ISG) for the microsurgical treatment of intra-cranial pathology. Forty-eight patients with a total of 53 lesions — 14 (26.4%) < 2 cm, 33 (62.3%) 2–4 cm, 6 (11.3%) > 4 cm — were included. The navigator was applied for biopsy procedures in three cases, for cyst fenestration/shunting in two cases and for general microsurgery-assisting purposes in the remaining 48 lesions, including transnasal approaches. The accuracy of the intra-operative navigation was in the range of 3 mm or better in 39 patients (81.3%) during the course of the operation and it had to be aborted in seven patients (14.6%) due to technical dropouts and due to other problems in two patients (4.2%). The level of accuracy achieved was not altered by the patient’s position except for an unsatisfactory result with the sitting position due to skin movement together with the fiducial markers. The system proved to be helpful for craniotomy planning and for intraoperative guidance in situations of a narrow visual field. It was especially useful for the localization of small lesions in highly eloquent brain regions and for the definition of the margin of large lesions.
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Schaller, C., Meyer, B., van Roost, D., Schramm, J. (1998). Neuronavigation-Assisted Microsurgery of Intracranial Lesions. In: Hellwig, D., Bauer, B.L. (eds) Minimally Invasive Techniques for Neurosurgery. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-58731-3_30
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DOI: https://doi.org/10.1007/978-3-642-58731-3_30
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