
Proceedings Paper
Accuracy of image-guided surgical navigation using near infrared (NIR) optical trackingFormat | Member Price | Non-Member Price |
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Paper Abstract
Spinal surgery is particularly challenging for surgeons, requiring a high level of expertise and precision
without being able to see beyond the surface of the bone. Accurate insertion of pedicle screws is critical
considering perforation of the pedicle can result in profound clinical consequences including spinal cord,
nerve root, arterial injury, neurological deficits, chronic pain, and/or failed back syndrome.
Various navigation systems have been designed to guide pedicle screw fixation. Computed tomography
(CT)-based image guided navigation systems increase the accuracy of screw placement allowing for 3-
dimensional visualization of the spinal anatomy. Current localization techniques require extensive
preparation and introduce spatial deviations. Use of near infrared (NIR) optical tracking allows for realtime
navigation of the surgery by utilizing spectral domain multiplexing of light, greatly enhancing the
surgeon’s situation awareness in the operating room. While the incidence of pedicle screw perforation and
complications have been significantly reduced with the introduction of modern navigational technologies,
some error exists. Several parameters have been suggested including fiducial localization and registration
error, target registration error, and angular deviation. However, many of these techniques quantify error
using the pre-operative CT and an intra-operative screenshot without assessing the true screw trajectory.
In this study we quantified in-vivo error by comparing the true screw trajectory to the intra-operative
trajectory. Pre- and post- operative CT as well as intra-operative screenshots were obtained for a cohort of
patients undergoing spinal surgery. We quantified entry point error and angular deviation in the axial and
sagittal planes.
Paper Details
Date Published: 10 March 2015
PDF: 12 pages
Proc. SPIE 9305, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II, 93050U (10 March 2015); doi: 10.1117/12.2079722
Published in SPIE Proceedings Vol. 9305:
Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II
Henry Hirschberg M.D.; E. Duco Jansen; Samarendra K. Mohanty; Nitish V. Thakor; Qingming Luo; Steen J. Madsen, Editor(s)
PDF: 12 pages
Proc. SPIE 9305, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II, 93050U (10 March 2015); doi: 10.1117/12.2079722
Show Author Affiliations
Joseph Alarcon, Ryerson Univ. (Canada)
Victor X. D. Yang, Ryerson Univ. (Canada)
Sunnybrook Health Sciences Ctr. (Canada)
Victor X. D. Yang, Ryerson Univ. (Canada)
Sunnybrook Health Sciences Ctr. (Canada)
Published in SPIE Proceedings Vol. 9305:
Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II
Henry Hirschberg M.D.; E. Duco Jansen; Samarendra K. Mohanty; Nitish V. Thakor; Qingming Luo; Steen J. Madsen, Editor(s)
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