ISO INTERNATIONAL STANDARD 18310-1 First edition 2017-01 Measurement and prediction of the ambient dose equivalent from patients receiving iodine 131 administration after thyroid ablation - Part 1: During the hospitalization Mesurage et prévision de I'équivalent de dose ambiant de patients bénéficiant d'un traitement par iode 131 apres ablation de la thyroide- Partie 1:Pendant I'hospitalisation Reference number IS0 18310-1:2017(E) International Organization for Standardization @ IS0 2017 ed without license from IHS IS0 18310-1:2017(E) COPYRIGHT PROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIzRoISQ 7 - All rights reserved Not for Resale, 2017/3/28 02:43:12 networking permited without license from IHS IS0 18310-1:2017(E) Contents Page Foreword ..iv Introduction ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions ..1 4 Measurement of ambient dose equivalent. .3 4.1 General .3 4.2 Calibration of the ionization chamber in the reference radiation .3 4.3 Measurement of ambient dose equivalent. .4 4.4 Examination of uncertainty elements.. ..6 5 Mathematical model for a calibration of ionization chamber ..6 5.1 General. .6 5.2 Calibration coefficient of an ionization chamber in the reference radiation .7 5.3 Measurement of ambient dose equivalent rate using a calibrated ionization chamber in an 131I radiation field .7 6 Quality control ..8 7 Uncertainty budget and estimation of uncertainty ..8 7.1 Relative combined standard uncertainty ..8 7.2 Relative combined standard uncertainty of uc [H*(10]] ..9 7.3 Expanded uncertainty 9 Annex A (informative) Experimental application to this document: measurement and prediction of the ambient dose equivalent rate from patients receiving radioiodine 131 administration after thyroid ablation. ..11 Bibliography .22 iii thout license from IHS