Minim Invas Neurosur
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Minim Invas Neurosur · Mar 1998
Comparative StudyIntraoperative three-dimensional ultrasonography: an approach to register brain shift using multidimensional image processing.
Neuronavigation uses the skull as a reference system for transfer of image-space data to physical space during brain surgery. This requires a stable spatial relation between the skull and intracranial structures. However, especially dura opening and preparation for lesion removal causes brain shift. ⋯ Intraoperative 3 D-ultrasonography revealed excellent delineation of landmarks in almost real time in six patients studied. Matching of MRI data and intraoperative 3 D-ultrasonography data was successful with good correspondence of landmarks. Intraoperative 3 D-ultrasonography is proposed as a promising tool for on-line detection of brain shift during intracranial operations.