Magnetic resonance (MR) and computed tomography (CT) images provide a detailed 3-D description of patient anatomy. During neurosurgery it is often desirable to establish a correspondence between these pre-operative images and real-time images of the patient (as shown to the right). In so doing, the position of a surgical target (e.g., a tumor), clearly visible in the MR or CT image, can be more easily visualized by the surgeon.
We have developed a system that allows for the real-time overlay of pre-operative MR or CT imagery onto a surgeon's operating microscope view. To accomplish this, our system estimates the transformation between the pre-operative image space and the continually changing surgical space - this estimation must be accurate to within 1 mm.
Papers
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2.Cortical Surface Tracking Using a Stereoscopic Operating Microscope, 2005
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4.A Non-Contacting 3-D Digitizer for Use in Image-Guided Neurosurgery, 2003
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5.Estimating Cortical Surface Motion Using Stereopsis for Brain Deformation Models, 2003
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6.A Non-Contacting 3-D Digitizer For Use in Image-Guided Neurosurgery, 2003