Supplementary Material for: Corpus Callosotomy with the CO<sub>2</sub> Laser Suction Device: A Technical Note S.Falowski R.Byrne 2012 <i>Introduction:</i> Patients with symptomatic generalized epilepsy who are not candidates for resections may be considered for corpus callosotomy. <i>Methods:</i> The two patients who were followed in this series underwent resection of the corpus callosum utilizing the OmniGuide CO<sub>2</sub> Laser System. <i>Surgical Technique:</i> The OmniGuide CO<sub>2</sub> Laser Systemcan be used in place of the bipolar electrocautery in a corpus callosotomy to improve midline dissection, decrease the likelihood of entering the ventricle, and improve visualization in the dissection. <i>Conclusion:</i> The OmniGuide CO<sub>2</sub> Laser System is a valuable option when performing a corpus callosotomy.