Conference ICDA-3

3rd International Conference on Dosimetry and its Applications

(http://www.ctn.tecnico.ulisboa.pt/icda-3/)

Abstract template(Please send the abstract in Word format to: icda3@ctn.tecnico.ulisboa.pt

Please select one of the following Conference topics for which you intend to submit your abstract:

X Individual Dosimetry and Monitoring

Computational Dosimetry and Phantoms

Internal Dosimetry and Biokinetic models

Biodosimetry, Radiobiology and Retrospective Dosimetry

Dosimetry for Epidemiology

Environmental Dosimetry, radioactivity measurement and monitoring

Micro- and Nanodosimetry

Monte Carlo and hybrid methods in Dosimetry and Radiation Measurement

Radiation Protection and Dosimetry in Medicine

Radiation Protection and Dosimetry in Industry

Radiation Protection and Dosimetry in NORM industries

Dosimetry of radon exposures

Low dose and protracted exposures

Dosimetry in radiological and nuclear emergencies and accidents

Radiation Shielding and Dosimetry at Accelerators

Dosimetry in Space applications

Neutron Dosimetry

Nuclear Data and Evaluation

Please select your preference:

X Oral Presentation

Poster

Accepted abstracts will be published as Conference Proceedings in the journal Radiation Physics and Chemistry.

Title: First steps towards online Personal Dosimetry Using Computational Methods in Interventional Cardiology

Authors: Mahmoud Abdelrahman 1 ,2, Pasquale Lombardo1, Filip Vanhavere1, Alain Seret2, Christophe Phillips2, Peter Covens3

Affiliation and complete address:

1 SCK•CEN: the Belgian nuclear research center, Boeretang 200, Mol, 2400, Belgium2 ULiège: Cyclotron Research Centre, B30, 8 Allée du Six Août, Liège, 4000, Belgium 3 VUB: Vrije Universiteit Brussel – UZ Brussel, Laarbeeklaan 101-103 , 1090 Brussel, Belgium

IntroductionWith this work we present an innovative system for calculating occupational doses, as it is now being developed within the PODIUM (Personal Online DosImetry Using computational Methods) project. Individual monitoring of workers is essential to follow up regulatory dose limits and to apply the ALARA principle. However, current personal dosimeters are subject to large uncertainties, especially in non-homogeneous fields, like those found interventional radiology/cardiology. Workers in these fields also need to wear several dosimeters (extremity, eye lens, above/below apron), which causes practical problems. As the capabilities of computational methods are increasing exponentially, it will become feasible to use pure computations to calculate doses in place of physical dosimeters.

MethodsIn our concept system, operational and protection quantities are calculated by fast Monte Carlo methods. Our dose calculation accounts for the real radiation field (including fluence, energy and angular distributions) and for the relative position of different body parts of the worker. The real movements of exposed workers are captured using depth cameras. This information is translated to a flexible anthropomorphic phantom, and then in Monte-Carlo simulations. For the moment this is done off-line, after the procedure is finished, and the parameters of the procedure are collected.

ResultsFor validating our system, we performed tests in interventional radiology (IR) rooms. In total, we followed 15 procedures in Cath-labs at UZ-VUB and CHU- Liège. An accurate analysis of the staff position was performed, and as a first step, we compared simulated Hp(10) and measured Hp(10) with electronic personal dosimeter (EPD) during an angiography procedure for some of these procedures. The results showed good agreement between the calculated doses and the ones measured by the EPD dosimeter.

ConclusionsWith this work, we show that simulating worker doses based on tracking systems and flexible phantoms is possible. This method has big advantages in interventional radiology workplaces where the fields are non-homogeneous and doses to staff can be relatively high. This method can also help in ALARA applications and for education and training.

The project is funded by the “CONCERT-European Joint Programme for the Integration of Radiation Protection Research 2014-2018 under grant agreement No. 662287”