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ISO 28057:2019

(Main)

Clinical dosimetry — Dosimetry with solid thermoluminescence detectors for photon and electron radiations in radiotherapy

Clinical dosimetry — Dosimetry with solid thermoluminescence detectors for photon and electron radiations in radiotherapy

This document describes rules for the procedures, applications, and systems of thermoluminescence dosimetry (TLD) for dose measurements according to the probe method. It is particularly applicable to solid "TL detectors", i.e. rods, chips, and microcubes, made from LiF:Mg,Ti or LiF:Mg,Cu,P in crystalline or polycrystalline form. It is not applicable to LiF powders because their use requires special procedures. The probe method encompasses the arrangement, particularly in a water phantom or in a tissue-equivalent phantom, of single TL detectors or of "TL probes", i.e. sets of TL detectors arranged in thin-walled polymethyl methacrylate (PMMA) casings. The purpose of these rules is to guarantee the reliability and the accuracy indispensable in clinical dosimetry when applied on or in the patient or phantom. This document applies to dosimetry in teletherapy with both photon radiation from 20 keV to 50 MeV and electron radiation from 4 MeV to 25 MeV, as well as in brachytherapy with photon-emitting radionuclides. These applications are complementary to the use of ionization chambers.

Dosimétrie clinique — Dosimétrie avec détecteurs thermoluminescents solides pour les rayonnements de photons et d'électrons en radiothérapie

Le présent document décrit les règles pour les procédures, applications et systèmes de dosimétrie par thermoluminescence (TLD) pour les mesurages de doses conformément à la technique de la sonde. Il s'applique en particulier aux «détecteurs TL» solides, à savoir les bâtonnets, les pastilles et les microcubes fabriqués à partir de LiF:Mg,Ti ou de LiF:Mg,Cu,P sous forme cristalline ou polycristalline. Il ne s'applique pas aux poudres de LiF, étant donné que leur utilisation requiert des procédures spéciales. La technique de la sonde comprend la disposition, en particulier dans un fantôme d'eau ou dans un fantôme équivalant à un tissu, de détecteurs TL uniques ou de «sondes TL», c'est-à-dire des ensembles de détecteurs TL disposés dans des boîtiers de poly(méthacrylate de méthyle) (PMMA) à paroi fine. Ces règles visent à garantir la fiabilité et l'exactitude indispensables en dosimétrie clinique lorsqu'elle est appliquée sur ou dans le patient ou le fantôme. Le présent document s'applique à la dosimétrie en téléradiothérapie pour le rayonnement de photons entre 20 keV et 50 MeV et le rayonnement d'électrons entre 4 MeV et 25 MeV ainsi qu'en curiethérapie avec des radionucléides émettant des photons. Ces applications sont complémentaires de l'utilisation des chambres d'ionisation.

General Information

Status
Published
Publication Date
26-Jun-2019
ICS
13.280 - Radiation protection
Technical Committee
ISO/TC 85/SC 2 - Radiological protection
Drafting Committee
ISO/TC 85/SC 2/WG 22 - Dosimetry and related protocols in medical applications of ionizing radiation
Current Stage
9020 - International Standard under periodical review
Start Date
15-Apr-2024
Completion Date
15-Apr-2024
Ref Project

Relations

Consolidated By
ISO 16396-2:2022 - Plastics — Polyamide (PA) moulding and extrusion materials — Part 2: Preparation of test specimens and determination of properties
Effective Date
06-Jun-2022
Revises
ISO 28057:2014 - Dosimetry with solid thermoluminescence detectors for photon and electron radiations in radiotherapy
Effective Date
30-Apr-2016

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ISO 28057:2019 - Clinical dosimetry -- Dosimetry with solid thermoluminescence detectors for photon and electron radiations in radiotherapyISO 28057:2019 - Clinical dosimetry -- Dosimetry with solid thermoluminescence detectors for photon and electron radiations in radiotherapy
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ISO 28057:2019 - Dosimétrie clinique -- Dosimétrie avec détecteurs thermoluminescents solides pour les rayonnements de photons et d'électrons en radiothérapieISO 28057:2019 - Dosimétrie clinique -- Dosimétrie avec détecteurs thermoluminescents solides pour les rayonnements de photons et d'électrons en radiothérapie
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Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 28057
Second edition
2019-07
Clinical dosimetry — Dosimetry with
solid thermoluminescence detectors
for photon and electron radiations in
radiotherapy
Dosimétrie clinique — Dosimétrie avec détecteurs
thermoluminescents solides pour les rayonnements de photons et
d'électrons en radiothérapie
Reference number
ISO 28057:2019(E)
©
ISO 2019

---------------------- Page: 1 ----------------------
ISO 28057:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 28057:2019(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Rules for the TLD measurement procedure . 9
4.1 Principle of measurement . 9
4.2 Measured quantity . 9
4.3 Measurement cycle .10
4.3.1 General requirements .10
4.3.2 Sequence of measurement cycles .10
4.3.3 Common passing of the measurement cycles .10
4.3.4 Handling of TL detectors.10
4.3.5 Pre-irradiation annealing .11
4.3.6 Irradiation .11
4.3.7 Post-irradiation annealing.11
4.3.8 Reading.11
4.4 Measurement of the absorbed dose to water .12
4.4.1 Basic formula for the determination of the absorbed dose to water .12
4.4.2 Determination of the background value, M .
0 12
4.4.3 Determination of the indicated value, M .
...

NORME ISO
INTERNATIONALE 28057
Deuxième édition
2019-07
Dosimétrie clinique —
Dosimétrie avec détecteurs
thermoluminescents solides pour
les rayonnements de photons et
d'électrons en radiothérapie
Clinical dosimetry — Dosimetry with solid thermoluminescence
detectors for photon and electron radiations in radiotherapy
Numéro de référence
ISO 28057:2019(F)
©
ISO 2019

---------------------- Page: 1 ----------------------
ISO 28057:2019(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2019
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2019 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 28057:2019(F)

Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Règles pour la procédure de mesure par TLD .10
4.1 Principe de mesure.10
4.2 Grandeur mesurée .10
4.3 Cycle de mesurage .10
4.3.1 Exigences générales .10
4.3.2 Séquence des cycles de mesurage .10
4.3.3 Passage commun des cycles de mesurage .11
4.3.4 Manipulation des détecteurs TL .11
4.3.5 Réinitialisation avant irradiation .12
4.3.6 Irradiation .12
4.3.7 Réinitialisation après irradiation .12
4.3.8 Lecture .12
4.4 Mesurage de la dose absorbée dans l’eau .13
4.4.1 Formule de base pour la détermination de la dose absorbée dans l’eau .13
4.4.2 Détermination de la valeur de bruit de fond, M .
0 13
4.4.3 Détermination de la valeur indiquée, M .
...

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