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Minim Invas Neurosur · Feb 2003
Comparative StudyImage-guided stereotaxy in the interventional MRI.
- E Samset and H Hirschberg.
- The Interventional Centre, The National Hospital of Norway, University of Oslo, Norway. eigil.samset@klinmed.uio.no
- Minim Invas Neurosur. 2003 Feb 1;46(1):5-10.
BackgroundStereotactic procedures employing frame-based systems and utilizing pre-operative MR or CT have several shortcomings such as long procedure time, patient discomfort and transport, poor fail-safe capabilities and targeting inaccuracies due to brain shift. Conducting all procedural steps in an interventional MRI has the potential of alleviating some of these deficiencies.MethodsA stereotactic system consisting of a skull-mounted mechanical positioning device and customized navigation software has been developed. The accuracy of this system was tested within an interventional MRI employing a skull phantom.ResultsThe mean distance between the targets hit and the planned target coordinates was 0.70 mm +/- 0.3 mm with a maximum distance of 1.3 mm.InterpretationThe results indicate that the proposed stereotactic system can be used for stereotactic procedures in the interventional MRI.
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