Evaluation of an Integrated Tool for Automated Visualization of SubduralElectrodes

摘要

Using a 3D-demonstrator system for application in neurosurgery, an integrated tool for epilepsy surgery evaluation has been developed to visualize subdural electrodes derived from postoperative CT datasets on the cortical surface by 3D-rendering preoperative MRI datasets. Difficulties result from postoperative deformations caused by hematoma. To investigate deformation and resultant electrode localization errors, patient data, online database and also phantoms as a kind of well-known reference are used. A head phantom was designed to evaluate occurring errors, respectively. The developed tool works fully automated and takes about 2 minutes to visualize electrodes' position. The measured electrodes' position error does not fulfill clinical requirements yet; phantom data must be used for further investigations.