Interactive 3D Registration of Ultrasound and Magnetic Resonance Images based on a Magnetic Position Sensor

Introduction Accurate guidance and localization of the surgical tool within the brain is essential for the success of various neurosurgical procedures, such as biopsy or tumor resection. Stereotactic systems provide guidance to the surgeon based on preoperative tomographic images, such as CT and MRI. Recently, intraoperative ultrasound (US) images have been integrated with stereotactic systems. Although comparison of these corresponding US and MR/CT images provides the surgeon with easier visualization of the intraoperative changes in the brain, the optical position sensors require a line of sight and the equipment used by existing methods is cumbersome, complex, and expensive. Technology description Researchers at the University of Washington have invented an apparatus for interactive three-dimensional registration of US and MR images. This interactive frameless stereotactic system integrates US with MR images using a low-cost and easy-to-use position sensor, with the system having improved accuracy. Business opportunity The market for computer-assisted surgery and surgical systems is currently more than $500 million. Over 7,000 neurosurgeries a year are performed with commercial image guided navigaion systems with more clinical applications under development. Intellectual property position The UW has an issued 6775404

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