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Related Experiment Video

Updated: Jan 23, 2026

Photoacoustic Cystography
09:49

Photoacoustic Cystography

Published on: June 11, 2013

13.9K

Photoacoustic lymphangiography.

Hiroki Kajita1, Anna Oh1, Moemi Urano2

  • 1Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan.

Journal of Surgical Oncology
|June 6, 2019
PubMed
Summary

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Photoacoustic lymphangiography offers detailed 3D visualization of lymphatic vessels, revealing structures not seen with traditional methods. This advanced imaging improves understanding of lymphatic system anatomy and function.

Area of Science:

  • Medical Imaging
  • Optical Imaging
  • Biomedical Engineering

Background:

  • Photoacoustic technology enables visualization of light-absorbing tissue components and contrast agents in lymphatic channels.
  • High spatial resolution imaging of lymphatic vessels is crucial for understanding lymphatic function and diagnosing conditions like lymphedema.

Purpose of the Study:

  • To introduce three-dimensional (3D) imaging of human lymphatic vessels using photoacoustic lymphangiography.
  • To demonstrate the capability of photoacoustic lymphangiography in visualizing lymphatic structures with high resolution.

Main Methods:

  • Utilized a 3D photoacoustic visualization system (PAI-05) with healthy subjects and lymphedema patients.
  • Administered indocyanine green (ICG) subcutaneously and acquired photoacoustic and fluorescence images using near-infrared laser irradiation.
Keywords:
indocyanine greenlymphatic vesselslymphedemalymphographyphotoacoustic techniques

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Last Updated: Jan 23, 2026

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Three-dimensional Optical-resolution Photoacoustic Microscopy

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  • Recorded fluorescence images concurrently for comparative analysis.

    • Main Results:

    • Successfully visualized lymphatic vessels down to 0.2 mm diameter in 3D, alongside surrounding venules.
    • Observed dermal backflow patterns as dense, interconnected 3D lymphatic structures in lymphedema patients.
    • Identified collecting vessels below the dermis, which were not visible with fluorescence lymphangiography.

    Conclusions:

    • Photoacoustic lymphangiography provides detailed, high-resolution observation of individual lymphatic vessels.
    • This technique enhances the understanding of the 3D structure and physiological status of lymphatic vessels.
    • Offers a significant advancement in visualizing the lymphatic system for research and clinical applications.