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Journal of Biomedical Optics • Open Access

Monitoring the reduced scattering coefficient of bone tissues on the trajectory of pedicle screw placement using near-infrared spectroscopy
Author(s): Yangyang Liu; Yuyan Wang; Zhiyu Qian; Jinzhe Zhao; Xinzhi Cao; Weitao Li

Paper Abstract

Pedicle screw (PS) fixation has been widely used for spine diseases. Scientists and clinicians employ several approaches to navigate PS during operation. We have demonstrated the feasibility of monitoring the reduced scattering coefficient (μ's) on the trajectory of PS using near-infrared spectroscopy (NIRS). To perform the in-vitro monitoring, an NIRS measurement system was introduced and the reduced scattering coefficients of different sites in porcine pedicle were accurately deduced from the spectrum. Moreover, the changes of the reduced scattering coefficient along the different paths were studied. The results show reduced scattering coefficients on different regions of bones can be significantly distinguished. Furthermore, monitoring experiments along different paths confirmed that a reduced scattering coefficient would change versus the depth of puncture in pedicles. Thus, the proposed monitoring system based on NIRS provides a potential for guiding PS during operation.

Paper Details

Date Published: 5 November 2014
PDF: 6 pages
J. Biomed. Opt. 19(11) 117002 doi: 10.1117/1.JBO.19.11.117002
Published in: Journal of Biomedical Optics Volume 19, Issue 11
Show Author Affiliations
Yangyang Liu, Nanjing Univ. of Aeronautics and Astronautics (China)
Yuyan Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Zhiyu Qian, Nanjing Univ. of Aeronautics and Astronautics (China)
Jinzhe Zhao, Nanjing Univ. of Aeronautics and Astronautics (China)
Xinzhi Cao, Nanjing Univ. of Aeronautics and Astronautics (China)
Nanjing General Hospital (China)
Weitao Li, Nanjing Univ. of Aeronautics and Astronautics (China)


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