Image guided intervention

Image guided intervention - Image-Guided Intervention BENG...

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David Hall, Ph.D. Assistant Adjunct Professor Departments of Radiology and Bioengineering UCSD Image-Guided Intervention BENG 101
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Overview Introduction Stereotactic Neurosurgery (SNS) SNS based on Digital Volumes Evolutions in SNS Image Guidance for Rigid Structures Intraoperative Imaging Future Expectations
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Overview Introduction Stereotactic Neurosurgery (SNS) SNS based on Digital Volumes Evolutions in SNS Image Guidance for Rigid Structures Intraoperative Imaging Future Expectations
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Introduction Not just diagnostic, but guide surgical intervention Preoperative images used to plan surgery, but need to geometrically register preoperative images, planning data, and surgical instruments. Planning and registration is computer assisted intervention. Also real-time image-guided surgery possible. Neuorosurgery pioneering role: Brain nuclei are macroscopically invisible only derived from images. Deep brain structures via vital brain tissue – minimally invasive Brain is assumed rigid and immobile with respect to the skull.
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Overview Introduction Stereotactic Neurosurgery (SNS) SNS based on Digital Volumes Evolutions in SNS Image Guidance for Rigid Structures Intraoperative Imaging Future Expectations
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Stereotactic Neurosurgery (SNS) Stereotactic frame – references to skull landmarks (pre-images) Intersubject variability of deep intercerebral targets to surface landmarks prevents its use without images.
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Stereotactic Neurosurgery (SNS) 1950-1970: brain nuclei destroyed to treat pain syndromes but not image visible, so defined relative to third ventricle (brain structure) which was visible.
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Stereotactic Neurosurgery (SNS) X-ray image (ventriculogram) to define target point in stereotactic frame and used to guide surgical instrument.
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Overview Introduction Stereotactic Neurosurgery (SNS) SNS based on Digital Volumes Evolutions in SNS Image Guidance for Rigid Structures Intraoperative Imaging Future Expectations
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SNS based on Digital Volumes Computer-based imaging allows surgeon to see lesion before treatment and with CT approach it with mm precision. Three steps: Acquisition of pre-operative images, prepare registration Surgery planning and simulation Intraoperative registration of instruments with preoperative images and instrument guidance according to planning.
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SNS based on Digital Volumes Image Acquisition
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SNS based on Digital Volumes Planning Surgeon defines a probe trajectory in pre-op images. Important not to damage any critical structures. Useful to reslice data along probe trajectory probe.
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SNS based on Digital Volumes Transfer Probe guided along planned trajectory relative to stereotactic frame
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Overview Introduction Stereotactic Neurosurgery (SNS) SNS based on Digital Volumes Evolutions in SNS Image Guidance for Rigid Structures Intraoperative Imaging Future Expectations
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This note was uploaded on 04/30/2010 for the course BENG 101 taught by Professor Silva,g during the Fall '08 term at UCSD.

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Image guided intervention - Image-Guided Intervention BENG...

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