{"id":424963,"date":"2024-10-20T06:54:18","date_gmt":"2024-10-20T06:54:18","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-62127-12022\/"},"modified":"2024-10-26T13:00:11","modified_gmt":"2024-10-26T13:00:11","slug":"bs-en-iec-62127-12022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-62127-12022\/","title":{"rendered":"BS EN IEC 62127-1:2022"},"content":{"rendered":"

IEC 62127-1:2022 is available as IEC 62127-1:2022 RLV<\/span> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62127-1:2022 specifies methods of use of calibrated hydrophones for the measurement in liquids of acoustic fields generated by ultrasonic medical equipment including bandwidth criteria and calibration frequency range requirements in dependence on the spectral content of the fields to be characterized. This document: – defines a group of acoustic parameters that can be measured on a physically sound basis; – defines a second group of parameters that can be derived under certain assumptions from these measurements, and called derived intensity parameters; – defines a measurement procedure that can be used for the determination of acoustic pressure parameters; – defines the conditions under which the measurements of acoustic parameters can be made using calibrated hydrophones; – defines procedures for correcting for limitations caused by the use of hydrophones with finite bandwidth and finite active element size, and for estimating the corresponding uncertainties. IEC 62127-1:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) The upper frequency limit of 40 MHz has been removed. b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities. c) Procedures and requirements for narrow-band approximation and broadband measurements have been modified; details on waveform deconvolution have been added. d) Procedures for spatial averaging correction have been amended. e) Annex D, Annex E and bibliography have been updated to support the changes of the normative parts.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
7<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
11<\/td>\nFOREWORD <\/td>\n<\/tr>\n
13<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
14<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
15<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
17<\/td>\nFigures
Figure 1 \u2013 Schematic diagram of the different planes and lines in an ultrasonic field <\/td>\n<\/tr>\n
31<\/td>\nFigure 2 \u2013 Several apertures and planes for a transducer of unknown geometry <\/td>\n<\/tr>\n
34<\/td>\nFigure 3 \u2013 Parameters for describing a focusing transducer of known geometry <\/td>\n<\/tr>\n
37<\/td>\n4 Symbols <\/td>\n<\/tr>\n
39<\/td>\n5 Measurement requirements
5.1 Requirements for hydrophones and amplifiers
5.1.1 Preface
5.1.2 General <\/td>\n<\/tr>\n
40<\/td>\n5.1.3 Sensitivity of a hydrophone
5.1.4 Directional response of a hydrophone
5.1.5 Effective hydrophone size
5.1.6 Choice of the size of a hydrophone active element <\/td>\n<\/tr>\n
42<\/td>\n5.1.7 Bandwidth <\/td>\n<\/tr>\n
45<\/td>\n5.1.8 Linearity
5.1.9 Hydrophone signal amplifier
5.1.10 Hydrophone cable length and amplifiers <\/td>\n<\/tr>\n
46<\/td>\n5.2 Requirements for positioning and water baths
5.2.1 General
5.2.2 Positioning systems <\/td>\n<\/tr>\n
47<\/td>\n5.2.3 Water bath <\/td>\n<\/tr>\n
48<\/td>\n5.3 Requirements for data acquisition and analysis systems
5.4 Recommendations for ultrasonic equipment being characterized
6 Measurement procedure
6.1 General <\/td>\n<\/tr>\n
49<\/td>\n6.2 Preparation and alignment
6.2.1 Preparation
6.2.2 Aligning an ultrasonic transducer and a hydrophone
6.3 Measurement
6.4 Analysis
6.4.1 Corrections for restricted bandwidth and spatial resolution
6.4.2 Uncertainties <\/td>\n<\/tr>\n
50<\/td>\n7 Beam characterization
7.1 General
Tables
Table 1 \u2013 Acoustic parameters appropriate to various types of medical ultrasonic equipment <\/td>\n<\/tr>\n
51<\/td>\n7.2 Primary pressure parameters
7.2.1 General
Figure 4 \u2013 Schematic diagram of the method of determining pulse duration <\/td>\n<\/tr>\n
52<\/td>\n7.2.2 Peak-compressional acoustic pressure and peak-rarefactional acoustic pressure
7.2.3 Spatial-peak RMS acoustic pressure <\/td>\n<\/tr>\n
53<\/td>\n7.2.4 Local distortion parameter
7.3 Intensity parameters derived from acoustic pressure
7.3.1 General <\/td>\n<\/tr>\n
54<\/td>\n7.3.2 Intensity parameters using pulse-pressure-squared integral <\/td>\n<\/tr>\n
57<\/td>\n8 Requirements for specific ultrasonic fields
8.1 General
8.2 Diagnostic fields
8.2.1 Simplified procedures and guidelines
8.2.2 Pulsed wave diagnostic equipment <\/td>\n<\/tr>\n
58<\/td>\n8.2.3 Continuous wave diagnostic equipment <\/td>\n<\/tr>\n
59<\/td>\n8.2.4 Diagnostic equipment with low acoustic output
8.3 Therapy fields
8.3.1 Physiotherapy equipment <\/td>\n<\/tr>\n
60<\/td>\n8.3.2 High intensity therapeutic ultrasonic fields
8.3.3 Non-focused and weakly focused pressure pulses
8.4 Surgical fields
8.4.1 Lithotripters and pressure pulse sources for other therapeutic purposes <\/td>\n<\/tr>\n
61<\/td>\n8.4.2 Low frequency surgical applications
8.5 Fields from other medical applications
9 Conformity statement
9.1 General
9.2 Maximum probable values <\/td>\n<\/tr>\n
62<\/td>\n9.3 Sampling <\/td>\n<\/tr>\n
63<\/td>\nAnnexes
Annex A (informative) General rationale <\/td>\n<\/tr>\n
65<\/td>\nAnnex B (informative) Hydrophones and positioning
B.1 General
B.2 Electrical loading considerations
B.3 Hydrophone signal amplifier
B.4 Hydrophone cable length and amplifiers <\/td>\n<\/tr>\n
66<\/td>\nB.5 Transducer positioning <\/td>\n<\/tr>\n
67<\/td>\nB.6 Alignment of hydrophones
B.7 Water bath lining material
B.8 Recommendations for ultrasonic equipment being characterized <\/td>\n<\/tr>\n
68<\/td>\nB.9 Types of hydrophones
B.9.1 Ceramic needle hydrophones
B.9.2 PVDF needle hydrophones
B.9.3 PVDF membrane hydrophones <\/td>\n<\/tr>\n
69<\/td>\nB.9.4 Fibre-optic and optic hydrophones <\/td>\n<\/tr>\n
70<\/td>\nB.9.5 Relative performance of different types
B.10 Typical specification data for hydrophones
Table B.1 \u2013 Typical specification data for hydrophones, in this case given at 1 MHz [69] <\/td>\n<\/tr>\n
71<\/td>\nAnnex C (informative) Acoustic pressure and intensity <\/td>\n<\/tr>\n
72<\/td>\nTable C.1 \u2013 Properties of distilled or de-ionized water as a function of temperature [71] <\/td>\n<\/tr>\n
73<\/td>\nAnnex D (informative) Voltage to pressure conversion
D.1 General <\/td>\n<\/tr>\n
74<\/td>\nD.2 Hydrophone deconvolution procedure <\/td>\n<\/tr>\n
75<\/td>\nD.3 Converting the data between double-sided and single-sided spectra
Figure D.1 \u2013 A flow diagram of the hydrophone deconvolution process <\/td>\n<\/tr>\n
76<\/td>\nTable D.1 \u2013 Method of conversion from a double- to a single-sided spectrum
Table D.2 \u2013 Method of conversion from a single- to a double-sided spectrum <\/td>\n<\/tr>\n
77<\/td>\nD.4 Use of hydrophone calibration data
D.4.1 Calibration data interpolation
D.4.2 Calibration data extrapolation <\/td>\n<\/tr>\n
78<\/td>\nD.4.3 Regularization filtering <\/td>\n<\/tr>\n
79<\/td>\nD.5 Implication of the hydrophone deconvolution process on measurement duration
Figure D.2 \u2013 Example of waveform deconvolution <\/td>\n<\/tr>\n
80<\/td>\nD.6 Validation of deconvolution implementation <\/td>\n<\/tr>\n
81<\/td>\nAnnex E (informative) Correction for spatial averaging
E.1 Linear and quasilinear fields <\/td>\n<\/tr>\n
83<\/td>\nE.2 Linear fields, quasilinear fields, and broadband nonlinearly distorted waveforms <\/td>\n<\/tr>\n
86<\/td>\nAnnex F (informative) Acoustic output parameters for multi-mode medical ultrasonic fields in the absence of scan-frame synchronization
F.1 General
F.2 Current philosophy <\/td>\n<\/tr>\n
87<\/td>\nF.3 Need for an alternative approach
F.4 Proposed approach
F.4.1 Alternative philosophy
Table F.1 \u2013 Main basic parameters defined in this document or in IEC 61161 <\/td>\n<\/tr>\n
88<\/td>\nF.4.2 Alternative parameters
Table F.2 \u2013 List of parameters that are to be used or are to be deleted <\/td>\n<\/tr>\n
89<\/td>\nF.5 Measurement methods
F.5.1 General
F.5.2 Peak pressures
F.5.3 Temporal-average intensity <\/td>\n<\/tr>\n
90<\/td>\nF.5.4 Frequency
F.5.5 Power
F.6 Discussion
F.6.1 Relationship to existing standards <\/td>\n<\/tr>\n
91<\/td>\nF.6.2 Advantages
F.6.3 Disadvantages <\/td>\n<\/tr>\n
92<\/td>\nAnnex G (informative) Propagation medium and degassing <\/td>\n<\/tr>\n
93<\/td>\nAnnex H (informative) Specific ultrasonic fields
H.1 Diagnostic fields
H.1.1 Useful relationships between acoustical parameters <\/td>\n<\/tr>\n
94<\/td>\nH.1.2 Pulsed wave diagnostic equipment
H.1.3 Continuous wave diagnostic equipment <\/td>\n<\/tr>\n
95<\/td>\nH.2 Therapy fields
H.2.1 Physiotherapy equipment
H.2.2 High intensity therapeutic ultrasonic equipment
H.2.3 Non-focused and weakly focused pressure pulses
H.3 Surgical fields
H.3.1 Lithotripters
H.3.2 Low frequency surgical applications <\/td>\n<\/tr>\n
96<\/td>\nAnnex I (informative) Assessment of uncertainty in the acoustic quantities obtained by hydrophone measurements
I.1 General
I.2 Overall (expanded) uncertainty
I.3 Common sources of uncertainty <\/td>\n<\/tr>\n
98<\/td>\nAnnex J (informative) Transducer and hydrophone positioning systems
Figure J.1 \u2013 Schematic diagram of the ultrasonic transducer andhydrophone degrees of freedom <\/td>\n<\/tr>\n
99<\/td>\nAnnex K (informative) Beamwidth midpoint method
Table K.1 \u2013 Decibel beamwidth levels for determining midpoints <\/td>\n<\/tr>\n
100<\/td>\nBibliography <\/td>\n<\/tr>\n
109<\/td>\nFran\u00e7ais
SOMMAIRE <\/td>\n<\/tr>\n
113<\/td>\nAVANT-PROPOS <\/td>\n<\/tr>\n
115<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
116<\/td>\n1 Domaine d’application
2 R\u00e9f\u00e9rences normatives <\/td>\n<\/tr>\n
117<\/td>\n3 Termes et d\u00e9finitions <\/td>\n<\/tr>\n
119<\/td>\nFigures
Figure 1 \u2013 Sch\u00e9ma repr\u00e9sentant les diff\u00e9rents plans et diff\u00e9rentes lignes d’un champ ultrasonique <\/td>\n<\/tr>\n
133<\/td>\nFigure 2 \u2013 Ouvertures et plans diff\u00e9rents pour un transducteur de g\u00e9om\u00e9trie inconnue <\/td>\n<\/tr>\n
137<\/td>\nFigure 3 \u2013 Param\u00e8tres pour la description d\u2019un transducteur focalisant de g\u00e9om\u00e9trie connue <\/td>\n<\/tr>\n
140<\/td>\n4 Symboles <\/td>\n<\/tr>\n
142<\/td>\n5 Exigences de mesure
5.1 Exigences relatives aux hydrophones et aux amplificateurs
5.1.1 Avertissement
5.1.2 G\u00e9n\u00e9ralit\u00e9s <\/td>\n<\/tr>\n
143<\/td>\n5.1.3 Sensibilit\u00e9 d’un hydrophone
5.1.4 R\u00e9ponse directionnelle d’un hydrophone
5.1.5 Taille efficace de l\u2019hydrophone
5.1.6 Choix de la taille de l’\u00e9l\u00e9ment actif d’un hydrophone <\/td>\n<\/tr>\n
145<\/td>\n5.1.7 Largeur de bande <\/td>\n<\/tr>\n
148<\/td>\n5.1.8 Lin\u00e9arit\u00e9
5.1.9 Amplificateur de signal de l’hydrophone <\/td>\n<\/tr>\n
149<\/td>\n5.1.10 Longueur du c\u00e2ble de l’hydrophone et amplificateurs
5.2 Exigences de positionnement et bains-marie
5.2.1 G\u00e9n\u00e9ralit\u00e9s
5.2.2 Syst\u00e8mes de positionnement <\/td>\n<\/tr>\n
150<\/td>\n5.2.3 Bain-marie <\/td>\n<\/tr>\n
152<\/td>\n5.3 Exigences li\u00e9es aux syst\u00e8mes d’acquisition et d’analyse des donn\u00e9es
5.4 Recommandations concernant les appareils \u00e0 ultrasons en cours de caract\u00e9risation
6 Mode op\u00e9ratoire de mesure
6.1 G\u00e9n\u00e9ralit\u00e9s
6.2 Pr\u00e9paration et alignement
6.2.1 Pr\u00e9paration <\/td>\n<\/tr>\n
153<\/td>\n6.2.2 Alignement d’un transducteur ultrasonique et d’un hydrophone
6.3 Mesurage
6.4 Analyse
6.4.1 Corrections de la largeur de bande limit\u00e9e et de la r\u00e9solution spatiale
6.4.2 Incertitudes
7 Caract\u00e9risation du faisceau
7.1 G\u00e9n\u00e9ralit\u00e9s <\/td>\n<\/tr>\n
154<\/td>\nTableaux
Tableau 1 \u2013 Param\u00e8tres acoustiques adapt\u00e9s aux diff\u00e9rents types d’appareils m\u00e9dicaux \u00e0 ultrasons <\/td>\n<\/tr>\n
155<\/td>\n7.2 Param\u00e8tres de pression principaux
7.2.1 G\u00e9n\u00e9ralit\u00e9s
Figure 4 \u2013 Sch\u00e9ma repr\u00e9sentant la m\u00e9thode de d\u00e9termination de la dur\u00e9e d’impulsion <\/td>\n<\/tr>\n
156<\/td>\n7.2.2 Pression acoustique de compression de cr\u00eate et pression acoustique de rar\u00e9faction de cr\u00eate
7.2.3 Pression acoustique efficace \u00e0 la cr\u00eate spatiale <\/td>\n<\/tr>\n
157<\/td>\n7.2.4 Param\u00e8tre de d\u00e9formation locale
7.3 Param\u00e8tres d’intensit\u00e9 d\u00e9riv\u00e9s de la pression acoustique
7.3.1 G\u00e9n\u00e9ralit\u00e9s <\/td>\n<\/tr>\n
158<\/td>\n7.3.2 Param\u00e8tres d’intensit\u00e9 utilisant l’int\u00e9grale de pression d’impulsion au carr\u00e9 <\/td>\n<\/tr>\n
161<\/td>\n8 Exigences li\u00e9es aux champs ultrasoniques sp\u00e9cifiques
8.1 G\u00e9n\u00e9ralit\u00e9s
8.2 Champs de diagnostic
8.2.1 Modes op\u00e9ratoires simplifi\u00e9s et lignes directrices <\/td>\n<\/tr>\n
162<\/td>\n8.2.2 Appareil de diagnostic \u00e0 ondes puls\u00e9es
8.2.3 Appareil de diagnostic \u00e0 ondes entretenues <\/td>\n<\/tr>\n
163<\/td>\n8.2.4 Appareil de diagnostic \u00e0 faible \u00e9mission acoustique
8.3 Champs th\u00e9rapeutiques
8.3.1 Appareils de physioth\u00e9rapie <\/td>\n<\/tr>\n
164<\/td>\n8.3.2 Champs ultrasoniques th\u00e9rapeutiques de haute intensit\u00e9 <\/td>\n<\/tr>\n
165<\/td>\n8.3.3 Ondes de pression non focalis\u00e9es et faiblement focalis\u00e9es
8.4 Champs chirurgicaux
8.4.1 Lithotripteurs et sources \u00e0 ondes de pression utilis\u00e9s \u00e0 d’autres fins th\u00e9rapeutiques
8.4.2 Applications chirurgicales \u00e0 basse fr\u00e9quence
8.5 Champs provenant d’autres applications m\u00e9dicales
9 D\u00e9claration de conformit\u00e9
9.1 G\u00e9n\u00e9ralit\u00e9s <\/td>\n<\/tr>\n
166<\/td>\n9.2 Valeurs probables maximales
9.3 \u00c9chantillonnage <\/td>\n<\/tr>\n
167<\/td>\nAnnexes
Annexe A (informative) Analyse raisonn\u00e9e g\u00e9n\u00e9rale <\/td>\n<\/tr>\n
170<\/td>\nAnnexe B (informative) Hydrophones et positionnement
B.1 G\u00e9n\u00e9ralit\u00e9s
B.2 Consid\u00e9rations relatives \u00e0 la charge \u00e9lectrique
B.3 Amplificateur de signal de l’hydrophone
B.4 Longueur du c\u00e2ble de l’hydrophone et amplificateurs <\/td>\n<\/tr>\n
171<\/td>\nB.5 Positionnement du transducteur <\/td>\n<\/tr>\n
172<\/td>\nB.6 Alignement des hydrophones
B.7 Mat\u00e9riau de rev\u00eatement du bain-marie <\/td>\n<\/tr>\n
173<\/td>\nB.8 Recommandations concernant les appareils \u00e0 ultrasons en cours de caract\u00e9risation
B.9 Types d’hydrophones
B.9.1 Hydrophones \u00e0 aiguille c\u00e9ramique
B.9.2 Hydrophones \u00e0 aiguille PVDF <\/td>\n<\/tr>\n
174<\/td>\nB.9.3 Hydrophones \u00e0 membrane PVDF
B.9.4 Hydrophones optiques et \u00e0 fibre optique <\/td>\n<\/tr>\n
175<\/td>\nB.9.5 Performances relatives des diff\u00e9rents types d\u2019hydrophone
B.10 Donn\u00e9es de sp\u00e9cification types pour les hydrophones <\/td>\n<\/tr>\n
176<\/td>\nTableau B.1 \u2013 Donn\u00e9es de sp\u00e9cification types pour les hydrophones,dans ce cas donn\u00e9es \u00e0 1 MHz [69] <\/td>\n<\/tr>\n
177<\/td>\nAnnexe C (informative) Pression et intensit\u00e9 acoustiques <\/td>\n<\/tr>\n
178<\/td>\nTableau C.1 \u2013 Propri\u00e9t\u00e9s de l’eau distill\u00e9e ou d\u00e9ionis\u00e9een fonction de la temp\u00e9rature [71] <\/td>\n<\/tr>\n
179<\/td>\nAnnexe D (informative) Conversion de la tension en pression
D.1 G\u00e9n\u00e9ralit\u00e9s <\/td>\n<\/tr>\n
180<\/td>\nD.2 Mode op\u00e9ratoire de d\u00e9convolution de l’hydrophone <\/td>\n<\/tr>\n
181<\/td>\nD.3 Conversion des donn\u00e9es du spectre \u00e0 double bande en spectre \u00e0 une seule bande
Figure D.1 \u2013 Organigramme du processus de d\u00e9convolution de l’hydrophone <\/td>\n<\/tr>\n
182<\/td>\nTableau D.1 \u2013 M\u00e9thode de conversion d’un spectre \u00e0 double bandeen spectre \u00e0 une seule bande <\/td>\n<\/tr>\n
183<\/td>\nD.4 Utilisation des donn\u00e9es d’\u00e9talonnage de l’hydrophone
D.4.1 Interpolation des donn\u00e9es d\u2019\u00e9talonnage
Tableau D.2 \u2013 M\u00e9thode de conversion d’un spectre \u00e0 une seule bande en spectre \u00e0 double bande <\/td>\n<\/tr>\n
184<\/td>\nD.4.2 Extrapolation des donn\u00e9es d\u2019\u00e9talonnage <\/td>\n<\/tr>\n
185<\/td>\nD.4.3 Filtrage de r\u00e9gularisation <\/td>\n<\/tr>\n
186<\/td>\nD.5 Implication du processus de d\u00e9convolution de l’hydrophone sur la dur\u00e9e du mesurage
Figure D.2 \u2013 Exemple de d\u00e9convolution de forme d’onde <\/td>\n<\/tr>\n
187<\/td>\nD.6 Validation de la mise en \u0153uvre de la d\u00e9convolution <\/td>\n<\/tr>\n
188<\/td>\nAnnexe E (informative) Correction de la moyenne spatiale
E.1 Champs lin\u00e9aires et quasi-lin\u00e9aires <\/td>\n<\/tr>\n
190<\/td>\nE.2 Champs lin\u00e9aires, champs quasi-lin\u00e9aires et formes d\u2019onde \u00e0 large bande et \u00e0 d\u00e9formation non lin\u00e9aire <\/td>\n<\/tr>\n
193<\/td>\nAnnexe F (informative) Param\u00e8tres d’\u00e9mission acoustique de champs ultrasoniques m\u00e9dicaux multimodaux en l’absence de synchronisation exploration-cadre
F.1 G\u00e9n\u00e9ralit\u00e9s
F.2 Philosophie actuelle <\/td>\n<\/tr>\n
194<\/td>\nF.3 N\u00e9cessit\u00e9 d\u2019une approche alternative
F.4 Approche propos\u00e9e
F.4.1 Philosophie alternative
Tableau F.1 \u2013 Principaux param\u00e8tres de base d\u00e9finis dans le pr\u00e9sent document ou dans l\u2019IEC 61161 <\/td>\n<\/tr>\n
195<\/td>\nF.4.2 Param\u00e8tres alternatifs
Tableau F.2 \u2013 Liste des param\u00e8tres qui doivent \u00eatre utilis\u00e9s ou supprim\u00e9s <\/td>\n<\/tr>\n
196<\/td>\nF.5 M\u00e9thodes de mesure
F.5.1 G\u00e9n\u00e9ralit\u00e9s
F.5.2 Pressions de cr\u00eate <\/td>\n<\/tr>\n
197<\/td>\nF.5.3 Intensit\u00e9 d\u00e9riv\u00e9e de la moyenne temporelle
F.5.4 Fr\u00e9quence
F.5.5 Puissance <\/td>\n<\/tr>\n
198<\/td>\nF.6 Discussion
F.6.1 Relations avec les normes existantes
F.6.1.1 IEC 61157
F.6.1.2 IEC 62359 et IEC 60601-2-37
F.6.2 Avantages <\/td>\n<\/tr>\n
199<\/td>\nF.6.3 Inconv\u00e9nients <\/td>\n<\/tr>\n
200<\/td>\nAnnexe G (informative) Milieu de propagation et d\u00e9gazage <\/td>\n<\/tr>\n
201<\/td>\nAnnexe H (informative) Champs ultrasoniques particuliers
H.1 Champs de diagnostic
H.1.1 Relations utiles entre les param\u00e8tres acoustiques <\/td>\n<\/tr>\n
202<\/td>\nH.1.2 Appareil de diagnostic \u00e0 ondes puls\u00e9es <\/td>\n<\/tr>\n
203<\/td>\nH.1.3 Appareil de diagnostic \u00e0 ondes entretenues
H.2 Champs th\u00e9rapeutiques
H.2.1 Appareils de physioth\u00e9rapie
H.2.2 Appareils ultrasonores th\u00e9rapeutiques de haute intensit\u00e9 <\/td>\n<\/tr>\n
204<\/td>\nH.2.3 Ondes de pression non focalis\u00e9es et faiblement focalis\u00e9es
H.3 Champs chirurgicaux
H.3.1 Lithotripteurs
H.3.2 Applications chirurgicales \u00e0 basse fr\u00e9quence <\/td>\n<\/tr>\n
205<\/td>\nAnnexe I (informative) \u00c9valuation de l’incertitude dans les grandeurs acoustiques obtenues par suite des mesurages de l’hydrophone
I.1 G\u00e9n\u00e9ralit\u00e9s
I.2 Incertitude (\u00e9largie) globale
I.3 Sources communes d’incertitude <\/td>\n<\/tr>\n
207<\/td>\nAnnexe J (informative) Syst\u00e8mes de positionnement du transducteur et de l’hydrophone
Figure J.1 \u2013 Sch\u00e9ma repr\u00e9sentant les degr\u00e9s de libert\u00e9 du transducteur ultrasonique et de l’hydrophone <\/td>\n<\/tr>\n
208<\/td>\nAnnexe K (informative) M\u00e9thode du point m\u00e9dian de largeur de faisceau
Tableau K.1 \u2013 Niveaux de largeur de faisceau en d\u00e9cibel pour d\u00e9terminer les points m\u00e9dians <\/td>\n<\/tr>\n
209<\/td>\nBibliographie <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Ultrasonics. Hydrophones – Measurement and characterization of medical ultrasonic fields<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n218<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":424973,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[270,2641],"product_tag":[],"class_list":{"0":"post-424963","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/424963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/424973"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=424963"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=424963"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=424963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}