Optimization of postoperative computerized tomographic imaging in patients with the implanted Responsive Neurostimulation System (TM)
Columbia University, New York, New York, United StatesStereotactic and Functional Neurosurgery (Impact Factor: 2.02). 02/2008; 86(4):203-7. DOI: 10.1159/000131656
The Responsive Neurostimulation System is currently under investigation as a neurosurgical option for medically refractory epilepsy. The device produces significant metallic artifact on conventional axial CT scans, resulting in limited diagnostic imaging options for implanted patients. We have developed a strategy to overcome this technical difficulty utilizing optimized patient positioning, thin-slice image acquisition, and postprocessing image reconstruction with commercially available software. Significant improvements were noted in the severity of device-related metallic streak artifact on reconstructed axial images. In addition, thin-section data were successfully used to generate detailed three-dimensional reconstructions, providing for improved visualization of the stimulator and the intracranial position of attached electrodes.
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