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Intervention Planning Using a Laser Navigation System for CT-Guided Interventions: A Phantom and Patient Study.

Tatjana Gruber-Rouh1, Clara Lee1, Jan Bolck1

  • 1Institute for Diagnostic and Interventional Radiology, J. W. Goethe University of Frankfurt, Frankfurt 60590, Germany.

Korean Journal of Radiology
|July 16, 2015
PubMed
Summary

A novel laser navigation system (LNS) significantly improved accuracy and reduced intervention time and radiation dose for computed tomography (CT)-guided punctures compared to free-handed methods.

Keywords:
CT-guided interventionsFirst experience with patientsLNSLaser navigation systemPhantom study

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Area of Science:

  • Medical Imaging and Interventional Radiology
  • Surgical Navigation Technologies

Background:

  • Computed tomography (CT)-guided interventions are crucial for accurate diagnosis and treatment.
  • Free-handed puncture techniques can be limited by accuracy, efficiency, and radiation exposure.

Purpose of the Study:

  • To evaluate the accuracy, efficiency, and radiation dose of a novel laser navigation system (LNS) for CT-guided punctures.
  • To compare LNS performance against conventional free-handed puncture methods.

Main Methods:

  • Sixty punctures were performed on a phantom body comparing LNS-guided and free-handed techniques for accuracy, time, and radiation dose.
  • An additional 20 LNS-guided punctures on a phantom confirmed accuracy.
  • Ten patients underwent initial LNS-guided punctures.

Main Results:

  • LNS demonstrated superior target point accuracy (4.0 ± 2.7 mm vs. 6.3 ± 3.6 mm) and needle angulation accuracy (1.3 ± 0.9° vs. 3.4 ± 3.1°) compared to free-hand (p < 0.001).
  • Intervention time was reduced with LNS (7.03 ± 5.18 min vs. 8.38 ± 4.09 min; p = 0.006), as was the number of CT images required (4.2 ± 3.6 vs. 7.9 ± 5.1; p < 0.001).
  • Initial patient experience with LNS showed comparable accuracy and efficiency.

Conclusions:

  • The laser navigation system (LNS) significantly enhances accuracy in CT-guided interventions.
  • LNS improves procedural efficiency by reducing intervention time and radiation exposure.
  • LNS represents a promising advancement for CT-guided puncture procedures.