Record attendance at the 4th International Symposium on NBS in Neurosurgery jointly organized by the Charité-Universitätsmedizin Berlin and the Neurosurgical Clinic of Munich Technical University

HELSINKI, Finland – Nov. 27, 2012 -- Held in Berlin, Germany over the weekend of 16-17 November, 2012 this year's Symposium attracted 88 participants to the world's preeminent meeting on navigated TMS (nTMS) for clinical neurosurgery. Notably, the majority of the key opinion leaders in Germany either made presentation on use of the Nexstim NBS System or actively participated in the discussions.

Visitors learned of the huge strides made in clinical application of the NBS System, and the increasing numbers of patients helped by non-invasive cortical mapping prior to treatment decisions. The fact that the first institutions using NBS have successfully mapped close to 400 patients with tumors in or near rolandic areas of the brain, and several other hospitals are mapping a hundred patients per year proves that the technique is no longer experimental in leading institutions. Additionally, the issuance of preliminary reimbursement codes in the main global markets of the US and Germany, means that NBS presurgical mapping is well on its way towards becoming a new standard of care in neurosurgery.

Three prizes awarded for posters

Best Poster was awarded to Rogic M.1, Fernandez-Conejero I.2 and Jeroncic A.1 for their poster "Neurophysiologic markers of M1 for laryngeal muscles and opercular part of Broca's area elicited by magnetic and electrical stimulation" The clinicians, all contributing equally, are from:1Laboratory for Human and Experimental Neurophysiology (LAHEN), School of Medicine Split, Croatia and 2University Hospital Bellvitge, Barcelona, Spain. The poster describes the use of both non-invasive magnetic and inavsive electric stimulation to elicit short latency responses (SLR) in laryngeal muscles by stimulating the M1 for the laryngeal muscles, while clinically producing dysarthria. In addition, eliciting long latency response (LLR) in laryngeal muscles by stimulating opercular part of Broca's region , while clinically producing speech disturbances (speech arrest and/or language disturbances). The novel methodology of differentiating between M1 for laryngeal muscles and opercular part of Broca's area by simultaneous measurement of SLR and LLR during induced speech disorders might be used in preoperative mapping to facilitate surgical planning and intraoperative speech mapping.

Second prize was awarded to Peklic M.1,2, Rogic M.1 and Jeroncic A.1 For their poster: "Interruption of vocalization by navigated transcranial magnetic stimulation (nTMS) of M1 for laryngeal muscles. Acoustic analysis of voice changes - preliminary study." The clinicians are from 1Laboratory for Human and Experimental Neurophysiology (LAHEN), School of Medicine Split, Croatia as well as 2Faculty of Electrical Engineering and Computing (FER), University of Zagreb, Croatia. The poster described a preliminary study on acoustic analysis of induced vocalization and voice changes during stimulation by nTMS (NBS System, Nexstim Oy, Helsinki, Finland) of the primary motor cortex (M1) for laryngeal muscles.

Third prize was awarded to Jussen D., Zdunczyk A., Niraula B., Schmidt S., Brandt .S, Picht T. and Vajkoczy P. from the Charité - Universitätsmedizin Berlin, Germany for their poster titled "The hibernating brain - Cortical disinhibition after EC/IC bypass surgery in patients with chronic cerebral ischemia". The Berlin clinicians investigated whether the loss of motorcortical function in ischemia is reversible. Their 15-patient study showed that cerebral revascularization leads to a significant motor disinhibition as demonstrated by pre- and post (3 month) measurement of rMT and paired pulse paradigms in the affected hemisphere by navigated TMS.

The Symposium was supported by Nexstim Oy.

Final program 4th Symposium (pdf, 448 KB)