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Three-dimensional computed tomographic reconstruction: planning tool for surgery of skull base pathologies

Three-dimensional computed tomographic reconstruction: planning tool for surgery of skull base pathologies

Computer Aided Surgery 3(2): 89-94

Three-dimensional (3-D) computed tomographic (CT) reconstruction of the skull base region has added a different perspective to the data set usually presented in axial or coronal slices. It simultaneously demonstrates the spatial relationship of bones, tumors, vessels, and ventricles in a single illustration. Forty-nine patients with skull base lesions (44 with neoplastic and 5 with vascular pathologies) were examined with a spiral CT and 3-D reconstruction prior to surgery. A scanner and a maximum of 95 mL of iodized contrast media were used to enhance either tumor or vessels according to the specific pathology. Preoperative 3-D reconstruction was performed. It rendered a spatial representation of the pathology using data similar to that usually acquired in routine preoperative diagnostics. Complex anatomy can be visualized with only a handful of pictures. It was possible to easily compare various surgical approaches to the lesion on the basis of the 3-D computer model and to simulate the surgeon's view. The short time span (1 h average) necessary for reconstruction and editing allows the application of this method as a routine preoperative procedure for selected skull base pathologies.

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Accession: 047780917

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PMID: 9784957

DOI: 10.1002/(sici)1097-0150(1998)3:2<89::aid-igs6>3.0.co;2-g

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