TY - JOUR T1 - Rapid and Fully Automated Visualization of Subdural Electrodes in the Presurgical Evaluation of Epilepsy Patients JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 1078 LP - 1083 VL - 26 IS - 5 AU - Dimitri Kovalev AU - Joachim Spreer AU - Jürgen Honegger AU - Josef Zentner AU - Andreas Schulze-Bonhage AU - Hans-Jürgen Huppertz Y1 - 2005/05/01 UR - http://www.ajnr.org/content/26/5/1078.abstract N2 - Summary: For rapid visualization of subdural electrodes with respect to cortical and subcortical structures, we describe a novel and fully automated method based on coregistration, normalization, optional cerebellum masking, and volume rendering of 3D MR imaging data taken before and after implantation. The key step employs the skull-stripped preimplantation image as a mask to also remove the skull in the postimplantation image. The extracted brain is presented in 3D with the electrodes directly visible by their susceptibility artifacts. Compared with alternative methods, ours is based on freely available software and does not require manual intervention. ER -