Stereotactic and functional neurosurgery
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Stereotact Funct Neurosurg · Jan 2009
CT/MR image fusion in the postoperative assessment of electrodes implanted for deep brain stimulation.
Stereotactic postoperative imaging is essential for verification of the position of electrodes implanted for deep brain stimulation (DBS). MRI offers superior visualisation of the DBS targets relative to CT, but previous adverse incidents have heightened concerns about risks of postoperative MRI. Preoperative MRI fused with postoperative CT offers an alternative method for evaluating electrode position, but before this method can be clinically applied, the image registration accuracy must be established. The purpose of this study was to quantitatively assess the accuracy of three different image registration and fusion methods. ⋯ CT/MRI fusion provides a safe, practical technique for postoperative identification of DBS electrodes.