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Related Experiment Videos

Preliminary experience of infusional brachytherapy using colloidal 32P

S E Order1, J A Siegel, R Principato

  • 1Department of Radiological Physics, Cooper Hospital/University Medical Center, Camden, New Jersey 08103, USA.

Annals of the Academy of Medicine, Singapore
|May 1, 1996
PubMed
Summary

This study introduces a novel interstitial infusion technique for targeted cancer therapy, achieving 75-100% tumor dose deposition. This method shows promise for high-dose delivery without toxicity in various solid tumors.

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Area of Science:

  • Oncology
  • Radiology
  • Nuclear Medicine

Background:

  • Previous attempts using radiolabeled antibodies for Hodgkin's disease and hepatocellular cancer were limited by poor tumor dose deposition.
  • Factors such as increased tumor pressure, reduced vascularity, and poor diffusion hindered effective delivery of radiolabeled antibodies to tumors.

Purpose of the Study:

  • To review a novel interstitial tumor infusion technique for enhanced radiopharmaceutical delivery.
  • To evaluate the efficacy and safety of this technique in achieving high tumor dose deposition and controlling solid tumors.

Main Methods:

  • Intratumoral infusion of macroaggregated albumin to block tumor vasculature.
  • Interstitial tumor infusion of colloidal chromic 32Phosphorus under computed tomographic guidance.

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  • Phase I clinical studies in various solid tumors, including non-resectable pancreatic cancer.

    • Main Results:

    • Achieved 75% to 100% tumor dose deposition via interstitial infusion.
    • Demonstrated the potential for extremely high radiation doses (900,000 cGy to 1.7 million cGy) without observed toxicity.
    • Observed tumor control and remission in treated patients.

    Conclusions:

    • The described interstitial infusion technique significantly improves radiopharmaceutical tumor dose deposition.
    • This method allows for safe and effective delivery of high radiation doses, leading to tumor control and remission.
    • The technique shows potential for treating various solid tumors, including challenging cases like non-resectable pancreatic cancer.