Studies of phantom-solution systems for boron neutron capture therapy

Area of Science:

• Medical Physics
• Radiation Oncology
• Nuclear Chemistry

Background:

• Accurate dose estimation is critical for Boron Neutron Capture Therapy (BNCT) effectiveness.
• Distinguishing between nitrogen and hydrogen radiation doses is a key challenge in BNCT dosimetry.
• Development of reliable phantom systems is essential for validating BNCT treatment planning.

Purpose of the Study:

• To establish and evaluate phantom-solution systems for precise dose estimation in BNCT.
• To investigate the dosimetric properties of solutions containing neutron-absorbing nuclides.
• To enable accurate differentiation of nitrogen and hydrogen doses within BNCT phantoms.

Main Methods:

• Studied phantom systems incorporating boric acid (H₃BO₃), lithium hydroxide (LiOH), and gadolinium nitrate hexahydrate (Gd(NO₃)₃·6H₂O).
• Varied concentrations and nuclide abundances of 10B, 6Li, and 157Gd for neutron absorption.
• Analyzed the systems' capability to distinguish between nitrogen and hydrogen dose contributions.

Main Results:

• All three investigated phantom-solution systems demonstrated effectiveness in dose estimation.
• Suitable concentrations and nuclide abundances allowed for clear distinction between nitrogen and hydrogen doses.
• The developed systems are suitable for precise dose measurement in BNCT applications.

Conclusions:

• Established phantom-solution systems provide a reliable method for BNCT dose estimation.
• The systems effectively resolve nitrogen and hydrogen dose components, enhancing treatment accuracy.
• These findings support the advancement of dosimetry for Boron Neutron Capture Therapy.