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Related Experiment Video

Updated: Jul 27, 2025

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Brain-Mimicking Phantom for Photoablation and Visualization.

Ravi Prakash1, Kent K Yamamoto1, Siobhan R Oca1

  • 1Department of Mechanical Engineering and Materials Science, Duke University.

... International Symposium on Medical Robotics. International Symposium on Medical Robotics
|June 5, 2023
PubMed
Summary

Researchers developed a novel, low-cost tissue-mimicking phantom for surgical robotics. This phantom accurately models laser-tissue interactions during tumor resection and enables high-resolution visualization of ablation effects.

Keywords:
Brain TissueLaser SurgeryPhotoablationSurgical RoboticsTissue Mimicking Phantom

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Area of Science:

  • Biomedical Engineering
  • Surgical Robotics
  • Medical Imaging

Background:

  • Tissue-mimicking (TM) phantoms are crucial in surgical robotics but struggle to replicate intraoperative conditions.
  • The rise of laser tumor resection necessitates better phantoms for studying laser-tissue interactions.

Purpose of the Study:

  • To develop a modular, cost-effective TM phantom mimicking human brain tissue properties.
  • To enable accurate modeling of laser-tissue interactions for photoablation studies.
  • To facilitate visualization of laser-induced ablation using optical coherence tomography (OCT).

Main Methods:

  • A novel TM phantom was engineered with mechanical and thermal properties similar to brain tissue.
  • The phantom's response to laser ablation was characterized under fixed laser power, time, and angle.
  • Optical coherence tomography (OCT) was employed to visualize the ablated crater profile.

Main Results:

  • The developed phantom demonstrated a tuned response to laser ablation, consistent with simulated tissue conditions.
  • High-resolution surface profiles of the ablated craters were successfully generated using OCT.
  • The phantom provides a functionally relevant model for laser-tissue interaction studies.

Conclusions:

  • The proposed TM phantom offers a viable, low-cost solution for simulating laser-tissue interactions in surgical robotics.
  • This phantom facilitates precise visualization of photoablation effects, aiding in surgical planning and technology development.
  • The study highlights the phantom's utility in advancing laser-based tumor resection technologies.