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Biomedical Radioactive Glasses for Brachytherapy.

Francesco Baino1,2,3, Elisa Fiume1,2,3,4, Sara Ciavattini1

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Area of Science:

  • Biomaterials Science
  • Radiotherapy
  • Oncology

Background:

  • Cancer treatment traditionally involves surgery and chemotherapy.
  • Radiation therapy, including brachytherapy, presents a less invasive alternative.
  • Brachytherapy utilizes implantable radioactive seeds or microspheres for targeted cancer cell destruction.

Purpose of the Study:

  • To review existing biomedical glasses for brachytherapy applications.
  • To analyze production methods and limitations of current radioactive glass options.
  • To identify challenges and future research directions for degradable glass systems in radiotherapy.

Main Methods:

  • Literature review of biomedical glasses for brachytherapy.
  • Analysis of production techniques for radioactive glass materials.
  • Evaluation of material properties, including durability and radioisotope release.

Main Results:

  • Radioactive glasses have been developed for brachytherapy, primarily used in liver cancer.
  • Neutron-activatable yttria-alumina-silica glasses are favored for their durability and reduced risk of radioisotope release.
  • The development of degradable glass systems for radiotherapy remains a significant challenge.

Conclusions:

  • Biomedical glasses show potential for brachytherapy, but clinical use is limited.
  • Durable glass formulations are currently preferred to prevent hazardous radioisotope leakage.
  • Further research is needed to create effective degradable glass systems for advanced radiotherapy applications.