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Related Experiment Videos

[A new lymph node imaging agent--99mTc-polyphase liposome oleatis (99mTc-plo)].

B F Yu1

  • 1Cancer Institute, Chinese Academy of Medical Sciences, Beijing.

Zhonghua Zhong Liu Za Zhi [Chinese Journal of Oncology]
|July 1, 1988
PubMed
Summary

A novel radio-imaging agent, technetium-99m polyphase liposome oleatis (99mTc-plo), effectively visualizes lymph nodes in animal and human studies. This safe and reliable agent shows high uptake in lymph nodes, aiding in detecting malignancy and metastasis.

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Area of Science:

  • Nuclear Medicine
  • Radiopharmacology
  • Oncology

Background:

  • Accurate lymph node imaging is crucial for staging cancer and assessing metastasis.
  • Existing imaging modalities have limitations in sensitivity and specificity for lymph node evaluation.

Purpose of the Study:

  • To develop and evaluate a new lymph node radio-imaging agent, technetium-99m polyphase liposome oleatis (99mTc-plo).
  • To assess the safety, efficacy, and diagnostic potential of 99mTc-plo in preclinical and clinical settings.

Main Methods:

  • Polyphase liposome oleatis was labeled with technetium-99m using a stannous chloride method, achieving >90% labeling efficiency.
  • Animal studies (rats, rabbits) involved subcutaneous injection to assess lymph node visualization and biodistribution.
  • Clinical studies involved subcutaneous injection in patients to evaluate lymph node imaging in various regions.

Related Experiment Videos

Main Results:

  • 99mTc-plo clearly visualized regional lymph nodes in rats within 30 minutes, with images distinct for up to 24 hours.
  • Regional lymph nodes showed significantly higher uptake of 99mTc-plo compared to surrounding tissues in rabbits.
  • Clinical injections demonstrated sequential visualization of inguinal, external iliac, and common iliac lymph nodes, with perianal injection visualizing internal iliac nodes.

Conclusions:

  • 99mTc-plo is a simple, safe, reliable, and reproducible lymph node imaging agent.
  • The agent exhibits high affinity for lymph nodes and potential for cancer cell targeting.
  • 99mTc-plo is a promising supplementary tool for CT and B-ultrasonography in detecting lymphoid malignancy and lymph node metastasis.