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      Validation of the PathFinder neurosurgical robot using a phantom.

      The International Journal of Medical Robotics + Computer Assisted Surgery

      instrumentation, Surgery, Computer-Assisted, Sensitivity and Specificity, Robotics, Reproducibility of Results, Phantoms, Imaging, methods, Neurosurgical Procedures, Humans, Equipment Failure Analysis, Equipment Design

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          Abstract

          Minimally invasive surgery was born out of recent advances in neuro-imaging and stereotactic technology. As a result, the scale of neurosurgical procedures will soon be so small that it will not be within the ability of the most gifted and skilled neurosurgeons of today. Hence, neurosurgical robotics is the natural evolution in this field. The aim of this study was to evaluate the performance of a new robotic system in a neurosurgical phantom, comparing it to standard frame-based and frameless technology of today. In total, 19 different targets were approached by two standard stereotactic frames, the Stealth Station frameless system and the robot. The CRW and the ZD stereotactic frames were used. The frameless system was the Stealth Station image guidance system. The phantom used was a replica of the human skull fitted with 10 surface and nine deep targets. The robotic system outperformed both frame-based and frameless systems in all experiments in this study. The application accuracies were: robot, 0.5 mm; stereotactic frames, 0.98 mm; and frameless system, 1.96 mm. The robotic system was as accurate as the stereotactic frame, but without technical restrictions and cumbersome manual adjustments. Furthermore, the robotic system had near-absolute geometric accuracy, was reliable to perform the same procedure over and over without tiresomeness, variation or boredom, and would be impervious to biohazards and hostile environments. (c) 2007 John Wiley & Sons, Ltd.

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          Author and article information

          Journal
          10.1002/rcs.153
          17914750

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