Feasibility study of a lead-monoxide-based dosimeter for real-time radioactive source detection in HDR brachytherapy

Recently, cancer has been treated using high dose rates (HDRs), which requires highly reliable treatment plans. In current clinical practice, phosphors are widely used. However, these are of limited use for real-time verification of radiation during HDR brachytherapy; moreover, there is a possibilit...

Full description

Saved in:
Bibliographic Details
Published in:Journal of instrumentation 2019-05, Vol.14 (5), p.P05001-P05001
Main Authors: Kim, K.T., Kim, J.H., Shin, Y.H., Han, M.J., Park, J.E., Heo, Y.J., Lee, D.H., Cho, H.L., Min, B.I., Oh, Y.K., Park, S.K.
Format: Article
Language:English
Subjects:
Dosage
Feasibility studies
Gamma rays
Lead oxides
Linearity
Phosphors
Photodiodes
Radiation therapy
Real time
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recently, cancer has been treated using high dose rates (HDRs), which requires highly reliable treatment plans. In current clinical practice, phosphors are widely used. However, these are of limited use for real-time verification of radiation during HDR brachytherapy; moreover, there is a possibility of electrical error via high-energy radiation because a photodiode is used to detect visible light. Therefore, it is necessary to develop a new dosimeter that can detect gamma rays effectively. This study aimed to investigate the feasibility of a lead monoxide- (PbO)-based dosimeter to detect the position of a radioactive source in HDR brachytherapy. It was confirmed that the fabricated PbO dosimeter has sufficient response coincidence, reproducibility, and dose linearity for gamma rays. Based on these results, it is demonstrated that the PbO dosimeter complies with the general requirements of HDR brachytherapy monitoring systems. Thus, the PbO dosimeter is expected to be used commercially in the future.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/14/05/P05001