IRVINE, Calif., Oct. 28, 2013 (GLOBE NEWSWIRE) -- MRI Interventions, Inc. (OTCQB:MRIC) today announced that outcomes data from the use of its ClearPoint ® Neuro Intervention System in "asleep" deep brain stimulation (DBS) surgery were presented during the 2013 Annual Meeting of the Congress of Neurological Surgeons (CNS) in San Francisco. In an Original Science Program talk entitled "Application Accuracy of a Second Generation Interventional MRI Stereotactic Platform: Initial Experience in 101 DBS Electrode Implantations," Dr. Paul Larson, neurosurgeon at the University of California, San Francisco (UCSF), presented accuracy results from a prospective study of 60 patients who underwent asleep DBS with the ClearPoint System at UCSF between August 2010 and March 2013. Highlights of the study included:
- 98% of electrodes were placed with a single pass into the brain;
- No electrodes have required repositioning;
- The average accuracy of the electrode placement was 0.6 millimeter;
- Average surgical times were 3 hours 4 minutes for bilateral cases and 2 hours 23 minutes for unilateral cases.
- Patients' motor symptom scores improved an average of 72% on the Unified Parkinson's Disease Rating Scale (UPDRS), when comparing their pre-operative "off medication" UPDRS scores to their post-operative "on medication" UPDRS scores;
- Patients' post-operative Levodopa dosages decreased by an average of 71% from their pre-operative dosages.