IEC 62570:2014

Standard practice for marking medical devices and other items for safety in the magnetic resonance environment

IEC 62570:2014 applies to the practice of marking of items that might be used in the magnetic resonance (MR) environment. The purpose of this practice is to mark items that might be brought into the MR environment and to recommend information that should be included in the marking. The standard specifies the permanent marking of items, which are used in an MR environment, by means of terms and icons. MR image artifacts are not considered to be a performance issue and so are not addressed in this international standard practice. IEC 62570 is integrating the unmodified text of ASTM F2503-13. It has been developed by subcommittee 62B: Diagnostic imaging equipment, of IEC technical committee 62: Medical equipment in medical practice, in collaboration with ASTM.

Pratiques normalisées relatives au marquage des appareils médicaux et des éléments de sûreté divers dédiés aux environnements de résonance magnétique

L'IEC 62570:2014 s'applique aux pratiques de marquage des éléments qui pourraient être utilisés dans des environnements de résonance magnétique (RM). L'objectif de cette pratique est de marquer les éléments qui peuvent ne pas être installés dans un environnement de RM, mais aussi d'indiquer les informations qu'il convient d'intégrer au marquage. La norme spécifie le marquage permanent des éléments utilisés dans un environnement de RM via des termes et symboles. Les artefacts d'image à RM ne constituent pas un problème de performance et ne sont donc pas abordés dans cette pratique internationale normalisée. Les valeurs indiquées dans des unités SI doivent être considérées comme normalisées. Aucune autre unité de mesure n'est utilisée dans cette norme. L'IEC 62570 comprend le texte non modifié de la ASTM F2503-13. Elle a été établie par le sous-comité 62B: Appareils d'imagerie de diagnostic, du comité d'études 62 de l'IEC: Equipements électriques dans la pratique médicale, en collaboration avec la ASTM.

General Information

• Status: Published
• Publication Date: 25-Feb-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 11.040.50 - Radiographic equipment
• ICS: 11.040.55 - Diagnostic equipment
• Technical Committee: SC 62B - Diagnostic imaging equipment
• Current Stage: PPUB - Publication issued
• Start Date: 26-Feb-2014
• Completion Date: 26-Feb-2014

Standards Content (sample)

IEC 62570
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Standard practice for marking medical devices and other items for safety in the
magnetic resonance environment
Pratiques normalisées relatives au marquage des appareils médicaux et des
éléments de sûreté divers dédiés aux environnements de résonance magnétique
IEC 62570:2014-02(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2014 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, 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

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and

Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 14

documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International

iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a More than 55 000 electrotechnical terminology entries in

variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions

committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries

and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
14 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary

La recherche avancée permet de trouver des publications IEC Plus de 55 000 entrées terminologiques électrotechniques, en

en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et

comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus

projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just

Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette

Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:

[e-mail].
---------------------- Page: 2 ----------------------
IEC 62570
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Standard practice for marking medical devices and other items for safety in the
magnetic resonance environment
Pratiques normalisées relatives au marquage des appareils médicaux et des
éléments de sûreté divers dédiés aux environnements de résonance
magnétique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 11.040.50; 11.040.55 ISBN 978-2-8322-1443-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
CONTENTS

FOREWORD ............................................................................................................................................ 3

1 Scope .............................................................................................................................. 5

2 Referenced Documents .................................................................................................... 5

3 Terminology ..................................................................................................................... 6

4 Significance and Use ....................................................................................................... 7

5 Requirements for assessment of potential hazards caused by interactions of an item

and the MR Environment .................................................................................................. 7

6 Methods of Marking.......................................................................................................... 7

7 Information Included in MR Marking ................................................................................. 8

8 Keywords ....................................................................................................................... 10

APPENDIX ............................................................................................................................ 13

X1. RATIONALE ................................................................................................................... 13

---------------------- Page: 4 ----------------------
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
STANDARD PRACTICE FOR MARKING MEDICAL DEVICES AND OTHER
ITEMS FOR SAFETY IN THE MAGNETIC RESONANCE ENVIRONMENT
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all

national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-

operation on all questions concerning standardization in the electrical and electronic fields. To this end and in

addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation

is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may

participate in this preparatory work. International, governmental and non-governmental organizations liaising with

the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all interested

IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses

arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62570, integrating the unmodified text of ASTM F2503 - 13, has been

developed by subcommittee 62B: Diagnostic imaging equipment, of IEC technical committee 62:

Medical equipment in medical practice, in collaboration with ASTM.
The text of this standard is based on the following documents:
FDIS Report on voting
62B/933/FDIS 62B/934/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.

The committee has decided that the contents of this publication will remain unchanged until the

stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to

the specific publication. At this date, the publication will be
---------------------- Page: 5 ----------------------
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The “colour inside” logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this publication using a colour printer.

---------------------- Page: 6 ----------------------
F2503 - 13
Standard Practice for
Marking Medical Devices and Other Items for Safety in the Magnetic
Resonance Environment

This standard is issued under the fixed designation F2503 - 13; the number immediately following the designation

indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses

indicates the year of last reapproval. A superscript epsilon (ε) indicates an editorial change since the last revision or

reapproval.
1. Scope

1.1 This international standard applies to the practice of marking of items that might be used in the magnetic

resonance (MR) environment.

1.2 The purpose of this practice is to mark items that might be brought into the MR environment and to

recommend information that should be included in the marking.

1.3 The standard specifies the permanent marking of items, which are used in an MR environment, by means of

terms and icons.

1.4 MR image artifacts are not considered to be a performance issue and so are not addressed in this international

standard practice (see X1.5).

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in

this standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the

responsibility of the user of his standard to establish appropriate safety and health practices and determine the

applicability of regulatory limitations prior to use.
2. Referenced Documents

2.1 The following referenced documents are indispensable for the application of this document. For

dated references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.
2.2 ASTM Standards:

F2052 Test Method for Measurement of Magnetically Induced Displacement Force on Medical Devices in the

Magnetic Resonance Environment

F2119 Test Method for Evaluation of MR Image Artifacts from Passive Implants

F2182 Test Method for Measurement of Radio Frequency Induced Heating On or Near Passive Implants During

Magnetic Resonance Imaging

F2213 Test Method for Measurement of Magnetically Induced Torque on Medical Devices in the Magnetic

Resonance Environment
2.3 Other Standards:

IEC 60601-2-33 Medical Electrical Equipment—Part 2-33: Particular Requirements for the Safety of Magnetic

Resonance Equipment for Medical Diagnosis

ISO 14971 Medical Devices — Application of Risk Management to Medical Devices

ISO/IEC Guide 51 Safety Aspects — Guidelines for their Inclusion in Standards

ISO TS 10974 Assessment of the Safety of Magnetic Resonance Imaging for Patients with an Active Implantable

Medical Device

This practice is under the jurisdiction of ASTM Committee F04 on Medical and Surgical Materials and Devices and is the direct

responsibility of Subcommittee F04.15 on Material Test Methods.

Current edition approved Oct. 1, 2008. Published November 2008. Originally approved in 2005. Last previous edition approved in 2005 as

F2503 – 05. DOI: 10.1520/F2503 - 08.

For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For

Annual Book of ASTM Standards volume information, refer to the standard's Document Summary page on the ASTM website.

---------------------- Page: 7 ----------------------
F2503 - 13
3. Terminology
3.1 Definitions:

3.1.1 harmful interaction— unintended direct or indirect interaction of items with MR equipment,

especially with the static magnetic field, the gradient fields and the RF fields of the MR equipment, that

can pose hazards to patients or other persons.

NOTE 1- In this context, the affected image quality or image artifacts are not considered to be a harmful

interaction.
3.1.2 hazard—potential source of harm. [ISO/IEC Guide 51]
3.1.3 item—object that might be brought into the MR environment.

3.1.4 magnetically induced displacement force—force produced when a magnetic object is exposed to the spatial

gradient of a static magnetic field. This force will tend to cause the object to translate in the spatial gradient of the

static magnetic field.

3.1.5 magnetically induced torque—torque produced when a magnetic object is exposed to a magnetic field. This

torque will tend to cause the object to align itself along the magnetic field in an equilibrium direction that induces no

torque.

3.1.6 magnetic induction or magnetic flux density (B in T)—that magnetic vector quantity which at any point in a

magnetic field is measured either by the mechanical force experienced by an element of electric current at the point,

or by the electromotive force induced in an elementary loop during any change in flux linkages with the loop at the

point. The magnetic induction is frequently referred to as the magnetic field. B is the static field in an MR

equipment and accessories. Plain type indicates a scalar (for example, B) and bold type indicates a vector (for

example, B).

3.1.7 magnetic resonance (MR)—resonant absorption of electromagnetic energy by an ensemble of

atomic nuclei situated in a magnetic field. IEC 60601-2-33, definition 201.3.217

3.1.8 magnetic resonance (MR) equipment—medical electrical equipment which is intended for in vivo

magnetic resonance examination of a patient comprising all parts in hardware and software from the

supply mains to the display monitor.

NOTE 2- The MR equipment is a programmable electrical medical system (PEMS) IEC 60601-2-33,

definition 201.3.218

3.1.9 magnetic resonance (MR) examination—process of acquiring data by magnetic resonance from a

patient IEC 60601-2-33, definition 201.3.219

3.1.10 magnetic resonance (MR) environment—the three dimensional volume of space surrounding the MR

magnet that contains both the Faraday shielded volume and the 0.50 mT field contour (5 gauss (G) line). This

volume is the region in which an item might pose a hazard from exposure to the electromagnetic fields produced by

the MR equipment and accessories.

3.1.11 MR Conditional–an item with demonstrated safety in the MR environment within defined conditions. At a

minimum, address the conditions of the static magnetic field, the switched gradient magnetic field and the

radiofrequency fields. Additional conditions, including specific configurations of the item, may be required.

3.1.12 Supplementary Marking—additional information that, in association with a marking as “MR Conditional,”

states via additional language the conditions in which an item can be used safely within the MR environment.

3.1.13 MR Safe—an item that poses no known hazards resulting from exposure to any MR environment. MR

Safe items are composed of materials that are electrically nonconductive, nonmetallic, and nonmagnetic

Note 3- An item composed entirely of electrically nonconductive, nonmetallic and nonmagnetic materials may be

determined to be MR Safe by providing a scientifically based rationale rather than test data. Examples of MR Safe items are

a cotton blanket or a silicone catheter.

3.1.14 MR Unsafe—an item which poses unacceptable risks to the patient, medical staff or other persons within

the MR environment.

NOTE 4— ISO 14971 Medical devices - Application of risk management to medical devices, includes a process for evaluating

risks, including identifying unacceptable risks. MR Unsafe items include items such as a pair of ferromagnetic scissors.

3.1.15 medical device—any instrument, apparatus, implement, machine, appliance, implant, in vitro reagent or

calibrator, software, material, or other similar or related article, intended by the manufacturer to be used, alone or in

combination, for human beings for one or more of the specific purpose(s) of:
(1) diagnosis, prevention, monitoring, treatment, or alleviation of disease;

(2) diagnosis, monitoring, treatment, alleviation of, or compensation for an injury;

(3) investigation, replacement, modification, or support of the anatomy or of a physiological process;

---------------------- Page: 8 ----------------------
F2503 - 13
(4) supporting or sustaining life;
(5) control of conception;
(6) disinfection of medical devices;

(7) providing information for medical purposes by means of in vitro examination of specimens derived from the

human body, and which does not achieve its primary intended action in or on the human body by pharmacological,

immunological, or metabolic means, but which may be assisted in its function by such means. [ISO 13485]

3.1.16 radio frequency (RF) magnetic field—the magnetic field in MRI that is used to flip the magnetic moments.

The frequency of the RF field is γB where γ is the gyromagnetic constant, 42.56 MHz/T for protons, and B is the

0 0
static magnetic field in Tesla.
3.1.17 safety—freedom from unacceptable risk.

3.1.18 specific absorption rate (SAR)—radio frequency power absorbed per unit of mass (W/kg). [IEC

60601-2-33]
3.1.19 tesla, (T)—the SI unit of magnetic induction equal to 10 gauss (G).
4. Significance and Use

4.1 Interactions of medical devices and other items with the MR environment has resulted in serious injuries and

death of patients and other individuals. Additionally, hazards stemming from equipment malfunction are of concern.

Section 4.2 lists possible direct and indirect causes of hazards in the MR environment.

4.2 Potential direct and indirect causes of hazards
4.2.1 Direct causes:

4.2.1.1 mechanical causes, including magnetically induced displacement force, torque, and vibration

4.2.1.2 electromagnetic causes, including induction (heating, stimulation) and discharge (spark gap)

4.2.1.3 acoustic causes
4.2.2 Indirect causes:

4.2.2 malfunction of items, for example of vital components such as valves, monitors and pumps

4.3 This practice provides a uniform system for marking to indicate the conditions for which it has been

determined that a medical device or other item may be safely placed and used in the MR environment. It provides

simple visual icons and terms which are intended to reduce injuries and other mishaps that occur when items that

pose hazards in the MR environment are brought into the MR environment.

5. Requirements for assessment of potential hazards caused by interactions of an item and the MR

Environment

5.1 Perform testing sufficient to characterize the behavior of the item in the MR environment.

5.1.1 In particular, testing for items that may be placed in the MR environment should address magnetically

induced displacement force (Test Method F2052), magnetically induced torque (Test Method F2213), and RF

heating (Test Method F2182 for passive implants and ISO TS 10974 for active implants). Additionally, electronic

components shall be evaluated for malfunction.

5.1.2 Other possible safety issues to consider for the hazard assessment include, but are not limited to, thermal

injury, induced currents/voltages, interaction with the switched gradient field, dB/dt, for all items that may go inside

the magnet bore, electromagnetic compatibility, neurostimulation, acoustic noise, interaction among devices, and the

malfunction of the item and the malfunction of the MR equipment and accessories. See Table X.1.1 for some

hazards and associated test methods. Also see Section X1.2.1.4.

5.2 List any parameter that affects the safety of the item. Describe any condition that is known to produce an

unsafe condition.

NOTE 5 - These remarks do not claim to be complete. Therefore it is recommended that the user of this standard consider specific questions and

topics that may be applicable to the specific item being evaluated. Some potential hazards to patients and others in the MR environment are given

in X1.2.1 and Table X1.1.
6. Methods of Marking

6.1 The marking method shall not compromise performance or function of the marked item and should provide

legibility over the anticipated service life of the item. For all items external to the body of a person for which it is

technically feasible, labeling for MR Conditional items shall appear on the item and include the conditions for safety

in the MR environment.
---------------------- Page: 9 ----------------------
F2503 - 13
7. Information Included in MR Marking

7.1 Medical devices and other items vary widely in size, and the amount of information that practically can be

included in marking varies accordingly. For implants, the MR marking shall be included in the labeling (including

the instructions for use, package inserts, patient and physician manuals) and on the patient information card. Non-

implanted items, where feasible, shall have MR marking on the item as well as in the labeling. Some items (for

example, small or very thin ones) do not provide any surfaces which can be marked practically. For items for which

direct marking is not practical, the MR marking shall be included in the labeling. For both implants and non-

implanted items, the MR marking may be placed on the product packaging label (e.g. on the box), however the

package label should clearly indicate the item(s) inside the packaging to which the MR marking applies (e.g.,

implant only or implant and delivery system).

7.2 The marking method shall not compromise performance or function of the marked item and should remain

readable over the anticipated service life of the item.

7.3 Minimum Information—As a result of the testing described in Section 5, mark the item as MR Safe, MR

Conditional, or MR Unsafe using the icons as shown in Tables 1 and 2.

7.3.1 The MR Safe icon consists of the letters “MR” surrounded by a green square (Table 1 and Figures 1 and 2).

Two options are given. When color reproduction is not practical, the icon may be printed in black and white (Table 2

and Figures 3 and 4). The use of the colored icon is strongly encouraged for the added visibility and information

provided by the color. For both color and black and white options in Tables 1 and 2, the option that is most visible

for the individual application should be chosen.

7.3.2 The MR Conditional icon consists of the letters “MR” within a yellow equilateral triangle with a thick black

band around the perimeter (Table 1 and Figure 5). The triangle is oriented with its horizontal side below the letters

“MR.” When color reproduction is not practical, the icon may be printed in black and white (Table 2 and Figure 6).

The use of the colored icon is strongly encouraged for the added visibility and information provided by the color.

7.3.2.1 For MR Conditional items, the item labeling (instructions for use, package inserts, operator manual,

patient information card, patient and physician information pamphlets, as appropriate) shall include appropriate

information from Section 5. (1) The MR Conditional icon may be supplemented by supplementary marking which

includes the appropriate information from Section 5 and describes the conditions for which the item has been

demonstrated to be MR Conditional. The supplementary marking consists of text surrounded by a rectangular frame

(Figure 7).

7.3.2.2 For all items external to the body of a person for which it is technically feasible, labeling for MR

Conditional items shall appear on the item and include conditions for safety in the MR environment from Section 5.

NOTE 6— This marking may be particularly useful for inclusion on nonimplanted items that are used in the MR environment,

for instance on electronic equipment, room furnishings, or item packaging and labeling.

Note 7– This marking may also be used if one portion of a kit or device with accessories is MR Conditional. For example,

indicate “stent only” for a system that consists of stent plus delivery catheter.

7.3.3 The MR Unsafe marking consists of the letters “MR” surrounded by a red circle with a diagonal red bar

across the letters extending from the upper left quadrant to the lower right quadrant of the circle and oriented at 45°

from the horizontal (Table 1 and Figure 8). When color reproduction is not practical, the icon may be printed in

black and white (Table 2 and Figure 9). The use of the colored icon is strongly encouraged for the added visibility

and information provided by the color.

7.4 The icons shall comply with the layout requirements given below. The colors are given in Table 3. Note that

the colors represented in an electronic or paper copy of this document may not match the colors as defined in Table

7.4.1 MR Safe icon, Color Option 1 (Figure 1):
7.4.1.1 The colors of the
...