IEC TS 63070:2019
(Main)Ultrasonics - Field characterization - Infrared imaging techniques for determining temperature elevation in tissue-mimicking material and at the radiation surface of a transducer in still air
Ultrasonics - Field characterization - Infrared imaging techniques for determining temperature elevation in tissue-mimicking material and at the radiation surface of a transducer in still air
IEC TS 63070:2019 is applicable to ultrasonic equipment designed for the medical field of application. It covers both diagnostic and therapeutic (physiotherapy and HITU) equipment.
This document describes transducer evaluation by the infrared imaging technique using a split TMM-phantom for qualitative and quantitative estimation of temperature distributions in tissue-mimicking material, resulting from absorption of ultrasound and from heating of the transducer itself.
This document also describes a method to measure transducer-surface temperature, while the transducer is driven under the still-air condition.
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IEC TS 63070 ®
Edition 1.0 2019-02
TECHNICAL
SPECIFICATION
colour
inside
Ultrasonics – Field characterization – Infrared imaging techniques for
determining temperature elevation in tissue-mimicking material and at the
radiation surface of a transducer in still air
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IEC TS 63070 ®
Edition 1.0 2019-02
TECHNICAL
SPECIFICATION
colour
inside
Ultrasonics – Field characterization – Infrared imaging techniques for
determining temperature elevation in tissue-mimicking material and at the
radiation surface of a transducer in still air
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.140.50 ISBN 978-2-8322-6417-1
– 2 – IEC TS 63070:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Symbols and abbreviated terms . 8
5 Methods of use . 8
5.1 General . 8
5.2 Consideration of perfusion . 9
5.3 Effects of environment . 9
6 IR-camera specifications . 9
6.1 General . 9
6.2 Test . 9
6.3 Calibration . 9
7 Phantom specification and construction . 10
7.1 Split TMM specifications . 10
7.2 Periodic validation . 10
8 Measurement procedure . 10
8.1 Split TMM setup . 10
8.1.1 General . 10
8.1.2 Emissivity . 11
8.1.3 Procedure . 11
8.2 Still-air setup . 12
8.2.1 General . 12
8.2.2 Emissivity . 12
8.2.3 Procedure . 12
9 Uncertainty determination . 12
Annex A (informative) Measurement example using a split TMM setup . 13
A.1 General . 13
A.2 Measurement setups . 13
A.3 Procedures . 16
A.4 Data analysis . 17
A.5 Improved split TMM-phantom . 18
Annex B (informative) Measurement procedure under the condition of still air . 20
B.1 General . 20
B.2 Measurement setups . 20
B.3 Procedures . 20
Annex C (informative) Guidance on uncertainty determination . 23
Bibliography . 25
Figure A.1 – Concept of measurement . 14
Figure A.2 – Setups for thermal equilibrium and measurement . 15
Figure A.3 – Analysis of thermal image . 18
Figure A.4 – Improved split TMM phantom . 19
Figure B.1 – Example of a measurement setup for the transducer surface-temperature
test in still air using an infrared camera . 21
Figure B.2 – Flow chart of the transducer surface-temperature test in still air using an
infrared camera . 22
Table A.1 – Results of measurement . 18
– 4 – IEC TS 63070:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ULTRASONICS – FIELD CHARACTERIZATION –
INFRARED IMAGING TECHNIQUES FOR DETERMINING
TEMPERATURE ELEVATION IN TISSUE-MIMICKING MATERIAL AND
AT THE RADIATION SURFACE OF A TRANSDUCER IN STILL AIR
FOREWORD
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IEC TS 63070, which is a Technical Specification, has been prepared by IEC technical
committee 87: Ultrasonics.
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Draft TS Report on voting
87/677/DTS 87/688A/RVDTS
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