EN 61391-2:2010

SLOVENSKI STANDARD
01-september-2010
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Ultrasonics - Pulse-echo scanners - Part 2: Measurement of maximum depth of
penetration and local dynamic range (IEC 61391-2:2010)
Ultraschall - Impuls-Echo-Scanner - Teil 2: Messung der maximalen Eindringtiefe und
des lokalen Dynamikbereichs (IEC 61391-2:2010)
Ultrasons - Scanners à impulsion et écho - Partie 2 : Mesure de la profondeur maximale
de pénétration et de la plage dynamique locale (CEI 61391-2:2010)
Ta slovenski standard je istoveten z: EN 61391-2:2010
ICS:
11.040.55 'LDJQRVWLþQDRSUHPD Diagnostic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61391-2
NORME EUROPÉENNE
April 2010
EUROPÄISCHE NORM
ICS 17.140.50
English version
Ultrasonics -
Pulse-echo scanners -
Part 2: Measurement of maximum depth of penetration
and local dynamic range
(IEC 61391-2:2010)
Ultrasons -  Ultraschall -
Scanners à impulsion et écho - Impuls-Echo-Scanner -
Partie 2 : Mesure de la profondeur Teil 2: Messung der maximalen
maximale de pénétration et de la plage Eindringtiefe und des lokalen
dynamique locale Dynamikbereichs
(CEI 61391-2:2010) (IEC 61391-2:2010)

This European Standard was approved by CENELEC on 2010-04-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

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the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61391-2:2010 E
Foreword
The text of document 87/400/CDV, future edition 1 of IEC 61391-2, prepared by IEC TC 87, Ultrasonics,
was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61391-2 on
2010-04-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-01-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-04-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61391-2:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60601-1:2005 NOTE  Harmonized as EN 60601-1:2006 (not modified).
IEC 61161:1992 NOTE  Harmonized as EN 61161:1994 (not modified).
__________
- 3 - EN 61391-2:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 61391-1 2006 Ultrasonics - Pulse-echo scanners - EN 61391-1 2006
Part 1: Techniques for calibrating spatial
measurement systems and measurement of
system point spread function response

IEC 62127-1 2007 Ultrasonics - Hydrophones - EN 62127-1 2007
Part 1: Measurement and characterization of
medical ultrasonic fields up to 40 MHz

IEC 61391-2 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
Ultrasonics – Pulse-echo scanners –
Part 2: Measurement of maximum depth of penetration and local dynamic range

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 17.140.50 ISBN 2-8318-1075-3
– 2 – 61391-2 © IEC:2010(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.8
2 Normative references .8
3 Terms and definitions .8
4 General requirement.13
5 Environmental conditions.13
6 Equipment and data required.14
6.1 General .14
6.2 Phantoms.14
6.2.1 Phantoms required .14
6.2.2 Phantom for maximum depth of penetration.14
6.2.3 Phantoms to estimate local dynamic range .15
6.3 Test equipment for measuring local dynamic range .15
6.4 Digitized image data.17
7 Measurement methods .19
7.1 System sensitivity: maximum depth of penetration.19
7.1.1 Scanning system settings .19
7.1.2 Image acquisition .19
7.1.3 Analysis.20
7.2 Local dynamic range .22
7.2.1 Scanning system settings .22
7.2.2 Measurement method .22
7.2.3 Type II testing for measuring local dynamic range .23
7.2.4 Estimating local dynamic range using backscatter contrast.24
Annex A (informative) Phantom for determining maximum depth of penetration .26
Annex B (informative) Local dynamic range using acoustical test objects.28
Bibliography.35
Figure 1 – Arrangement for measuring local dynamic range using an acoustic-signal
injection technique.16
Figure 2 – Arrangement for measuring local dynamic range using an acoustically-
coupled burst generator .17
Figure 3 – Image of the penetration phantom.20
Figure 4 – Mean digitized image data value vs. depth for the phantom image data
(A(j)) and for the noise image data (A'(j)) .21
Figure 5 – Digitized-image data vs. attenuator setting during local dynamic range
measurements using acoustic signal injection.23
Figure 6 – Image of phantom with inclusions (circles) .24
Figure 7 – Ensemble-average mean pixel value vs. backscatter contrast of inclusions.25
Figure A.1 – Phantom for maximum depth of penetration tests.26
Figure B.1 – Possible arrangement of reflectors for determining local dynamic range .29
Figure B.2 – Displayed intensity (or image pixel value) vs. reflector reflection
coefficient .30
Figure B.3 – Flat ended wire test object for determining local dynamic range.32

61391-2 © IEC:2010(E) – 3 –
Figure B.4 – The experimentally observed backscattering cross section of flat-ended
stainless-steel wires as a function of diameter for three frequencies: U 9.6 MHz;  :
4.8 MHz; ‘: 2.4 MHz [33].33

– 4 – 61391-2 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ULTRASONICS –
PULSE-ECHO SCANNERS –
Part 2: Measurement of maximum depth
of penetration and local dynamic range
FOREWORD
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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 61391-2 has been prepared by IEC technical committee 87:
Ultrasonics.
The text of this stand
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