Articles: neuronavigation.
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This study aimed to evaluate 2 commonly used posterior approach entry points for ventricular cannulation and the ideal trajectories using 3-dimensional virtual reality technology. ⋯ For satisfactory placement when entering via Frazier's point, the best trajectory target would be 4 cm above the contralateral medial canthus. When entering via Dandy's point, the best target would be 2 cm above the glabella.
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Case Reports
Robotic image-guided depth electrode implantation in the evaluation of medically intractable epilepsy.
The authors describe their experience with a technique for robotic implantation of depth electrodes in patients concurrently undergoing craniotomy and placement of subdural monitoring electrodes for the evaluation of intractable epilepsy. ⋯ Robotic image-guided placement of depth electrodes with concurrent craniotomy is feasible, and the technique is safe, accurate, and efficient.
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Anesthesia and analgesia · Aug 2008
The performance of six pulse oximeters in the environment of neuronavigation.
Although the use of pulse oximeters may be regarded a standard of care for monitoring anesthesia procedures, these monitors may be susceptible to various kinds of disturbances. Recently, it was suggested that neuronavigation equipment may interfere with pulse oximeter accuracy. In this study, we evaluated the effect of a neurosurgical image guidance system on the performance of six different pulse oximeters. Two simple shielding methods were evaluated. ⋯ Infrared pulse waves from neurosurgical navigation equipment may interfere with pulse oximeter measurements. Shielding the probe with aluminum foil sufficiently eliminated the infrared interference.
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Minim Invas Neurosur · Aug 2008
Endoscopic endonasal transsphenoidal surgery using a skull reference array and laser surface scanning.
Lesions of the skull base are increasingly being resected via the endoscopic, endonasal, transphenoidal approach. We have successfully treated 33 consecutive patients with pituitary lesions using this technique in combination with BrainLAB skull reference array and laser surface scanning for surgical navigation. ⋯ This is particularly important as extension and flexion of the head provide greater exposure to the clivus and anterior skull base respectively. Also, this technique obviates the need for additional preoperative MRI, thereby reducing cost and delays.