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IEC 62985-ed.1.0
Methods for calculating size specific dose estimates (SSDE) for computed tomography
Translate name
STANDARD published on 13.9.2019
The information about the standard:
Designation standards: IEC 62985-ed.1.0
Publication date standards: 13.9.2019
SKU: NS-970105
The number of pages: 42
Approximate weight : 126 g (0.28 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 62985-ed.1.0 :
IEC 62985:2019 applies to – CT SCANNERS that are able to display and report CTDIVOL in accordance with IEC 60601-2-44, and – RADIATION dose index monitoring software (RDIMS) for the purpose of calculating, displaying and recording the SIZE SPECIFIC DOSE ESTIMATE (SSDE) and its associated components. Specifically, this document provides standardized methods and requirements for calculating, displaying, or recording of SSDE, SSDE(z), WATER EQUIVALENT DIAMETER (DW), and DW(z), where z represents a specific longitudinal position of the scanned object. This document provides a method of determining a reference WATER EQUIVALENT DIAMETER, DW,REF(z), using CT scans of two cylindrical water PHANTOMS and one or more anthropomorphic PHANTOM(S), which conform to the specifications defined in this document. The method of calculating the WATER EQUIVALENT DIAMETER that is implemented by the MANUFACTURER, DW,IMP(z), is tested and validated against DW,REF(z) using the TEST OBJECTS and methods defined within this document. This document also describes the methods for calculating SSDE and DW, which represent the average values of SSDE(z) and DW(z) over the RECONSTRUCTION LENGTH. The contents of the corrigendum of June 2022 have been included in this copy. LIEC 62985:2019 s’applique: – aux TOMODENSITOMETRES qui sont capables d’afficher et de notifier CTDIVOL conformement a l’IEC 60601-2-44, et – au logiciel de surveillance de l’indice de dose de RAYONNEMENT (RDIMS - RADIATION Dose Index Monitoring Software) pour les besoins de calcul, d’affichage et d’enregistrement de l’ESTIMATEUR DE DOSE MORPHOLOGIQUE (SSDE) et de ses composantes associees. Plus specifiquement, le present document fournit des methodes et des exigences normalisees pour le calcul, l’affichage ou l’enregistrement du SSDE, du SSDE(z), du DIAMETRE EQUIVALENT EAU (DW), et de DW(z), ou z represente une position longitudinale specifique de l’objet balaye. Le present document fournit une methode permettant de determiner un DIAMETRE EQUIVALENT EAU de reference, DW,REF(z), par balayage TOMOGRAPHIQUE de deux FANTOMES d’eau cylindriques et d’un ou plusieurs FANTOMES anthropomorphiques conformes aux specifications definies dans le present document. La methode de calcul du DIAMETRE EQUIVALENT EAU appliquee par le FABRICANT, DW,IMP(z), est verifiee par essai et validee par rapport a la valeur DW,REF(z) en utilisant les OBJETS D’ESSAI et les methodes definis dans le present document. Le present document decrit egalement les methodes de calcul du SSDE et DW, qui representent les valeurs moyennes du SSDE(z) et du DW(z) sur l’ensemble de la LONGUEUR DE RECONSTRUCTION. Le contenu du corrigendum de juin 2022 a ete pris en consideration dans cet exemplaire.
These corrections apply to this standard:
IEC 62985-ed.1.0/Cor.1
Correction
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Corrigendum 1 - Methods for calculating size specific dose estimates (SSDE) for computed tomography
(Corrigendum 1 - Methodes de calcul de l’estimateur de dose morphologique (SSDE) en tomodensitometrie)
Correction published on 20.6.2022
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