IEC 62464-2:2010

Magnetic resonance equipment for medical imaging - Part 2: Classification criteria for pulse sequences

IEC 62464-2:2010 specifies the description of pulse sequences of magnetic resonance imaging. The classification in this standard is suitable for:
- tender texts;
- image annotation;
- protocol definition;
- technical publications.
IEC 62464-2:2010 does not apply to magnetic resonance spectroscopy. The classification does not focus on image contrast (T1, T2, proton density), as this is defined by pulse sequence parameters (e.g. repetition time, echo time) and is not a property of the pulse sequence alone. The pulse sequence classification does not specify the k-space acquisition scheme, reconstruction algorithm or post-processing.

Appareils à résonance magnétique utilisés pour l'imagerie médicale - Partie 2: Critères de classification pour les séquences d'impulsions

La CEI 62464-2:2010 spécifie la description des sequences d'impulsions de l'imagerie par resonance magnetique. La classification utilisée dans la présente norme convient pour:
- les contenus d'appels d'offres;
- les annotations d'images;
- les définitions de protocoles;
- les publications techniques.
La CEI 62464-2:2010 ne s'applique pas à la spectroscopie par résonance magnétique. La classification ne se concentre pas sur le contraste de l'image (T1, T2, densité protonique), comme ceci est défini par les paramètres de sequences d'impulsions (par exemple temps de répétition, temps d'écho), et n'est pas une propriété de la sequence d'impulsions uniquement. La classification des séquences d'impulsions ne spécifie pas le schéma d'acquisition, l'algorithme de reconstruction ou le post-traitement de l'espace k.

General Information

• Status: Withdrawn
• Publication Date: 09-Nov-2010
• Withdrawal Date: 29-Dec-2022
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 11.040.55 - Diagnostic equipment
• ICS: 17.220.01 - Electricity. Magnetism. General aspects
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: SC 62B - Medical imaging equipment, software, and systems
• Drafting Committee: WG 48 - TC 62/SC 62B/WG 48
• Current Stage: WPUB - Publication withdrawn
• Start Date: 30-Dec-2022
• Completion Date: 03-Jan-2023

Standards Content (Sample)

IEC 62464-2 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic resonance equipment for medical imaging –
Part 2: Classification criteria for pulse sequences

Appareils à résonance magnétique utilisés pour l’imagerie médicale –
Partie 2: Critères de classification pour les séquences d’impulsions

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IEC 62464-2 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic resonance equipment for medical imaging –
Part 2: Classification criteria for pulse sequences

Appareils à résonance magnétique utilisés pour l’imagerie médicale –
Partie 2: Critères de classification pour les séquences d’impulsions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 11.040.55 ISBN 978-2-88912-239-4
– 2 – 62464-2 Ó IEC:2010
CONTENTS
FOREW ORD . 3
INTRODUCTION . 5
1 Sc o pe . 6
2 Normative references . 6
3 Terms and definitions . 6
4 PULSE SEQUENCE classification . 7
4.1 Ge n eral . 7
4.2 PULSE SEQUENCE type . 7
4.2.1 General . 7
4.2.2 Notation . 8
4.3 Magnetisation modification . 8
4.3.1 General . 8
4.3.2 Notation . 8
4.4 Dimensionality . 10
4.4.1 General . 10
4.4.2 Notation . 10
4.5 Echo number . 10
4.5.1 General . 10
4.5.2 Notation . 10
Annex A (informative) Examples of use of the PULSE SEQUENCE classification . 11
Bibliography . 12
Index of defined terms used in this standard . 13

Table 1 – Magnetisation modification techniques . 9
Table A.1 – MANUFACTURER-specific classification examples . 11

62464-2 Ó IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC RESONANCE EQUIPMENT FOR MEDICAL IMAGING –

Part 2: Classification criteria for pulse sequences

FOREWORD
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International Standard IEC 62464-2 has been prepared by subcommittee 62B: Diagnostic
imaging equipment, of IEC technical committee 62: Electrical equipment in medical practice.
The text of this standard is based on the following documents:
FDIS Report on voting
62B/807/FDIS 62B/816/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62464-2 Ó IEC:2010
In this standard, the following print types are used:
– Requirements and definitions: roman type.
– Test specifications: italic type.
– Informative material appearing outside of tables, such as notes, examples and references: in smaller type.
Normative text of tables is also in a smaller type.
– TERMS DEFINED IN CAUSE 3 OF THE GENERAL STANDARD, IN THIS PARTICULAR STANDARD OR AS
NOTED: SMALL CAPITALS.
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related to the specific publication. At this date, the publication will be
• reconfirmed,
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• replaced by a revised edition, or
• amended.
62464-2 Ó IEC:2010 – 5 –
INTRODUCTION
Presently the MANUFACTURERS of MR EQUIPMENT use names for PULSE SEQUENCES which are
adopted from the literature (e.g. SPIN-ECHO) or are defined by the MANUFACTURER (e.g. FISP:
fast imaging with steady state precession). In the absence of a classification standard for
PULSE SEQUENCES, the MANUFACTURER-specific terminology complicates comparison of PULSE
SEQUENCES.
The DICOM standard allows the inclusion of PULSE SEQUENCE information with digital
MAGNETIC RESONANCE (MR) images. This information helps with the interpretation of images.
However, the DICOM standard allows MANUFACTURER-specific terminology.
This International Standard specifies a concise MANUFACTURER-independent classification
scheme for MR imaging PULSE SEQUENCES.
In terms of MR imaging, the PULSE SEQUENCE is a chronology of RF-pulses, switching of
gradient fields and data acquisition with the intention to create one or more images. As the
exact chronology determines the image contrast, image artefacts and other properties of the
image, it is necessary to define a consistent and accurate PULSE SEQUENCE
...