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Planning and simulation of microsurgical laser bone ablation

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International Journal of Computer Assisted Radiology and Surgery Aims and scope Submit manuscript

Abstract

Purpose

Laser ablation of hard tissue is not completely understood until now and not modeled for computer-assisted microsurgery. A precise planning and simulation is an essential step toward the usage of microsurgical laser bone ablation in the operating room.

Methods

Planning the volume for laser bone ablation is based on geometrical definitions. Shape and volume of the removed bone by single laser pulses were measured with a confocal microscope for modeling the microsurgical ablation. To remove the planned volume and to achieve smooth surfaces, a simulation of the laser pulse distribution is developed.

Results

The confocal measurements show a clear dependency from laser energy and resulting depth. Two-dimensional Gaussian functions are fitting in these craters. Exemplarily three ablation layers were planned, simulated, executed and verified.

Conclusions

To model laser bone ablation in microsurgery the volume and shape of each laser pulse should be known and considered in the process of ablation planning and simulation.

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Authors and Affiliations

  1. Institute for Process Control and Robotics, Universität Karlsruhe (TH), Engler-Bunte-Ring 8, 76131, Karlsruhe, Germany

    Lüder Alexander Kahrs, Jessica Burgner, Jörg Raczkowsky & Heinz Wörn

  2. Department of Oto-Rhino-Laryngology, Düsseldorf University Hospital, Moorenstr. 5, 40225, Düsseldorf, Germany

    Lüder Alexander Kahrs, Thomas Klenzner & Jörg Schipper

Authors
  1. Lüder Alexander Kahrs
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  2. Jessica Burgner
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  3. Thomas Klenzner
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  4. Jörg Raczkowsky
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  5. Jörg Schipper
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  6. Heinz Wörn
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Corresponding author

Correspondence to Lüder Alexander Kahrs.

Additional information

A talk and a proceedings contribution with the German title Planung und Simulation von mikrochirurgischer Laserknochenablation [1] was presented at curac.08 in Leipzig, Germany.

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Kahrs, L.A., Burgner, J., Klenzner, T. et al. Planning and simulation of microsurgical laser bone ablation. Int J CARS 5, 155–162 (2010). https://doi.org/10.1007/s11548-009-0303-4

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  • DOI: https://doi.org/10.1007/s11548-009-0303-4

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