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Updated: Feb 27, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
Published on: February 1, 2016
A radioactive material monitoring system using multiple gamma spectroscopy detectors and centroid method
Hankyeol Song1, Dong-Hoon Lee2, Seung-Jae Lee3
1Department of Radiation Convergence Engineering, College of Health Science, Yonsei University, Wonju, Republic of Korea.
Abstract:
A radioactive material monitoring system, employing a passive detection technique with multiple gamma spectroscopy detectors and the centroid method for use in large areas, is presented. The system determines the location and the activity of radioisotopes. The proposed system was designed and evaluated using Monte Carlo simulations and experiments. In both simulation and experiment, calculated source locations were well distinguished and the location was determined within less than 1m range compared to the actual location. The calculated activity was matched to the actual activity within an error of 5%.
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