1. Fiber-Optic Pedicle Probes to Advance Spine Surgery through Diffuse Reflectance Spectroscopy.
- Author
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Losch, Merle S., Heintz, Justin D., Edström, Erik, Elmi-Terander, Adrian, Dankelman, Jenny, and Hendriks, Benno H. W.
- Subjects
SPINAL surgery ,MONTE Carlo method ,FIBER optics ,REFLECTANCE spectroscopy ,SURGICAL instruments ,SIGNAL-to-noise ratio ,FLUOROSCOPY - Abstract
Diffuse Reflectance Spectroscopy (DRS) can provide tissue feedback for pedicle screw placement in spine surgery, yet the integration of fiber optics into the tip of the pedicle probe, a device used to pierce through bone, is challenging, since the optical probing depth and signal-to-noise ratio (SNR) are affected negatively compared to those of a blunt DRS probe. Through Monte Carlo simulations and optical phantom experiments, we show how differences in the shape of the instrument tip influence the acquired spectrum. Our findings demonstrate that a single bevel with an angle of 30 ∘ offers a solution to anticipate cortical breaches during pedicle screw placement. Compared to a blunt probe, the optical probing depth and SNR of a cone tip are reduced by 50%. The single bevel tip excels with 75% of the optical probing depth and a SNR remaining at approximately ⅔, facilitating the construction of a surgical instrument with integrated DRS. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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