How to Choose a Magnet — Reflections on the Development of MRI-Guided Neurosurgery
The development of image-guided neurosurgery represents a substantial improvement in the microsurgical treatment of tumors, vascular malformations and other intracranial lesions. In this context, since the beginning of the nineties, the rapid development of navigational devices have provided the neurosurgeon with an unprecedented degree of surgical accuracy and precision for the planning as well as performance of a large variety of neurosurgical procedures. Despite the wide applicability and many fascinating aspects of image guided navigation systems, a major draw-back of this technology became apparent right from the beginning of its implementation into neurosurgical operations. All these neuronavigational systems use images, mainly MRI pictures, acquired preoperatively, on which the planning of the operative procedure as well as its intraoperative performance is based. As dynamic changes of the intracranial contents (brain shift) regularly occur during the process of the surgical procedure, due to tumor removal, development of brain dema, and loss of cerebrospinal fluid, the surgeon is faced with a continuously changing intraoperative field for which the preoperative acquired data don not provide anyon-line information
KeywordsNavigation System Neurosurgical Procedure Neurosurgical Operation Interventional Magnetic Resonance Imaging Neurosurgical Application
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