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Laparoscopic Anatomical Hepatectomy Using Takasaki's Approach and Indocyanine Green Fluorescence Navigation
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Intraoperative brain tumor resection with indocyanine green using augmented microscopy.

Jeffrey R Watson1, Nikolay Martirosyan2, G Michael Lemole2

  • 1University of Arizona, Department of Biomedical Engineering, Tucson, Arizona, United States.

Journal of Biomedical Optics
|September 26, 2018
PubMed
Summary

This study introduces an augmented microscope combined with indocyanine green (ICG) for improved brain cancer surgery. This novel imaging technology enhances glioma resection guidance in a rat model, offering better visualization of tumor margins.

Keywords:
augmented microscopybrain surgeryfluorescencegliomaindocyanine greenvascular

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Area of Science:

  • Neurosurgery
  • Medical Imaging
  • Oncology

Background:

  • Brain cancer treatment outcomes have stagnated, necessitating advancements in diagnostic and therapeutic tools.
  • Near-infrared (NIR) contrast agents show promise for improving cancer diagnostics and therapies.
  • Intraoperative imaging technologies are crucial for effectively utilizing NIR agents during surgery.

Discussion:

  • An augmented microscope was utilized with indocyanine green (ICG) for real-time surgical guidance in a rat glioma resection model.
  • ICG accumulation in tumor tissue, driven by the enhanced permeation and retention effect across a compromised blood-brain barrier, enabled fluorescence visualization.
  • The augmented microscope successfully highlighted tumor regions, demonstrating its capability to guide the surgical resection process.

Key Insights:

  • The augmented microscope effectively visualizes ICG fluorescence, delineating tumor tissue from healthy brain parenchyma.
  • This technology provides critical intraoperative image guidance for neurosurgical procedures involving brain tumors.
  • Successful glioma resection was achieved in a rat model, validating the system's potential.

Outlook:

  • Further research can explore the application of this augmented microscopy in human clinical trials for brain tumor surgery.
  • Optimization of NIR contrast agents and imaging systems can lead to enhanced precision and efficacy in cancer treatment.
  • This approach holds potential for improving surgical outcomes and patient prognosis in neuro-oncology.