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Proceedings Paper

Intraoperative brain tumor resection cavity characterization with conoscopic holography
Author(s): Amber L. Simpson; Jessica Burgner; Ishita Chen; Thomas S. Pheiffer; Kay Sun; Reid C. Thompson; Robert J. Webster; Michael I. Miga
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Paper Abstract

Brain shift compromises the accuracy of neurosurgical image-guided interventions if not corrected by either intraoperative imaging or computational modeling. The latter requires intraoperative sparse measurements for constraining and driving model-based compensation strategies. Conoscopic holography, an interferometric technique that measures the distance of a laser light illuminated surface point from a fixed laser source, was recently proposed for non-contact surface data acquisition in image-guided surgery and is used here for validation of our modeling strategies. In this contribution, we use this inexpensive, hand-held conoscopic holography device for intraoperative validation of our computational modeling approach to correcting for brain shift. Laser range scan, instrument swabbing, and conoscopic holography data sets were collected from two patients undergoing brain tumor resection therapy at Vanderbilt University Medical Center. The results of our study indicate that conoscopic holography is a promising method for surface acquisition since it requires no contact with delicate tissues and can characterize the extents of structures within confined spaces. We demonstrate that for two clinical cases, the acquired conoprobe points align with our model-updated images better than the uncorrected images lending further evidence that computational modeling approaches improve the accuracy of image-guided surgical interventions in the presence of soft tissue deformations.

Paper Details

Date Published: 17 February 2012
PDF: 8 pages
Proc. SPIE 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling, 831631 (17 February 2012); doi: 10.1117/12.911926
Show Author Affiliations
Amber L. Simpson, Vanderbilt Univ. (United States)
Jessica Burgner, Vanderbilt Univ. (United States)
Ishita Chen, Vanderbilt Univ. (United States)
Thomas S. Pheiffer, Vanderbilt Univ. (United States)
Kay Sun, Vanderbilt Univ. (United States)
Reid C. Thompson, Vanderbilt Univ. (United States)
Robert J. Webster, Vanderbilt Univ. (United States)
Michael I. Miga, Vanderbilt Univ. (United States)

Published in SPIE Proceedings Vol. 8316:
Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling
David R. Holmes; Kenneth H. Wong, Editor(s)

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