Independent Dose Evaluation Software for Dosimetry Audits

Medical Physics Dosimetry Python Quality Assurance Independent Verification IAEA

Overview

This project involved the development of a Python-based software tool for independent dose evaluation in postal dosimetry audits using RPLD and OSLD systems. The tool was designed to provide a secondary verification workflow for audit dose calculations and to support the quality assurance of the IDEA audit software, particularly after software updates, configuration changes, or modifications to calculation workflows.

My role

I developed the software workflow and implemented the dose verification pipeline, including input-file handling, audit-type selection, system-parameter management, correction-factor application, comparison against IDEA-calculated results, and generation of IAEA-format output files. The project combined medical physics knowledge, dosimetry audit procedures, and Python-based software development.

Methods & tools

The tool processes dosimeter readout files, DataSheet PDFs, reference irradiation files, IDEA evaluation files, and long-term system correction files. It supports different audit categories, including hospital, primary, reference, and SSDL audits. The workflow applies the required correction factors and generates independent dose-evaluation outputs that can be compared with IDEA software results.

Quality assurance purpose

In radiotherapy and dosimetry audit systems, independent verification is essential for maintaining confidence in calculation workflows and supporting patient safety. This software provides a second-check system for dose calculations, helping ensure that audit results remain reliable when the primary evaluation software is updated or modified.

Outcome & output

The result is a working Python-based dose verification tool with a structured user interface, persistent system-file management, automated processing, and result summaries comparing the independent calculation with IDEA outputs. The tool supports the quality assurance of postal dosimetry audit workflows for RPLD and OSLD systems.

Use case

Developed as an internal quality-assurance tool for the IAEA Dosimetry Laboratory. The software provides an independent second-check workflow for dose calculations used in postal dosimetry audits, supporting verification of the primary audit evaluation process.

Screenshots

Note: Screenshots use dummy session IDs and demonstration files created only to illustrate the software workflow. No confidential audit data or real dosimetry results are shown.

Dose evaluation software workflow overview — Software workflow overview. Overview of the dose evaluation software workflow, from audit-type selection to file upload, system-file verification, processing, and report generation.

Session-file upload using dummy files — Session-file upload. Example of session-file upload using dummy files, including dosimeter readout files, DataSheet PDFs, and IDEA evaluation files.

Independent verification results compared with IDEA outputs — Independent verification results. Demonstration of independent dose calculation results compared with IDEA outputs for quality assurance of postal dosimetry audit workflows.