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A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

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Published on: February 1, 2016

An iterative position reconstruction algorithm for radioactive particle techniques.

Volodymyr Mosorov¹

¹Institute of Applied Computer Science, Lodz University of Technology, Poland. volodymyr.mosorov@p.lodz.pl

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|June 4, 2013

Summary

A new algorithm improves the accuracy of Computer Automated Radioactive Particle Tracking (CARPT) for monitoring reactor flow. This method enhances radioactive tracer motion analysis, increasing position reconstruction accuracy by up to 46%.

Keywords:

Iteration procedure Non-invasive technique Radioactive isotope Reconstruction algorithm

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Area of Science:

Nuclear Engineering
Fluid Dynamics
Computational Physics

Background:

The Computer Automated Radioactive Particle Tracking (CARPT) technique is crucial for monitoring fluid flow within reactors.
Traditional CARPT algorithms rely on calibration grids, leading to reduced accuracy with short measurement intervals and low photon counts.

Purpose of the Study:

To develop and validate an original, more accurate algorithm for reconstructing radioactive tracer positions in CARPT.
To improve the precision of flow motion monitoring in reactor systems.

Main Methods:

An iterative reconstruction algorithm was developed to calculate tracer positions based on calibration data.
Simulations using the MCNP5 package were performed to compare the new algorithm against classical approaches.
The algorithm's performance was evaluated under varying noise levels (low and high counts).

Main Results:

The novel iterative algorithm demonstrated a significant increase in position reconstruction accuracy compared to traditional methods.
Accuracy improved by 46% for low noise counts and 38% for high noise counts.
The enhanced accuracy makes the technique more reliable for detailed flow analysis.

Conclusions:

The presented iterative algorithm offers a substantial improvement in accuracy for CARPT measurements.
This advancement enables more precise monitoring of radioactive tracer motion in reactor environments.
The technique is validated for effective application in nuclear reactor flow diagnostics.