1、 IEC TS 62556 Edition 1.0 2014-04 TECHNICAL SPECIFICATION Ultrasonics Field characterization Specification and measurement of field parameters for high intensity therapeutic ultrasound(HITU)transducers and systems IEC TS 62556:2014-04(en)colourinsideCopyrighted material licensed to BR Demo by Thomso
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11、er assistance,please contact the Customer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC TS 62556 Edition 1.0 2014-04 T
12、ECHNICAL SPECIFICATION Ultrasonics Field characterization Specification and measurement of field parameters for high intensity therapeutic ultrasound(HITU)transducers and systems INTERNATIONAL ELECTROTECHNICAL COMMISSION XD ICS 17.140.50 PRICE CODE ISBN 978-2-8322-1505-0 Registered trademark of the
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14、 permitted.Uncontrolled when printed.2 IEC TS 62556:2014 IEC 2014 CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references.9 3 Terms and definitions.10 4 List of symbols.31 5 Independent measurement of total acoustic output power.33 6 Acoustic field measurement:equipment.33 6.1 Hydrophone
15、.33 6.1.1 General.33 6.1.2 Sensitivity of a hydrophone.34 6.1.3 Directional response of a hydrophone.34 6.1.4 Effective hydrophone radius.34 6.1.5 Choice of the size of a hydrophone active element.34 6.1.6 Hydrophone pressure limits.35 6.1.7 Hydrophone intensity limits.35 6.1.8 Hydrophone cable leng
16、th and amplifiers.36 6.2 Requirements for positioning and water baths.36 6.2.1 General.36 6.2.2 Positioning systems.36 6.2.3 Water bath.37 6.3 Requirements for data acquisition and analysis systems.38 6.4 Requirements and recommendations for ultrasonic equipment being characterized.39 7 Measurement procedure.39 7.1 General.39 7.2 Preparation and alignment.39 7.2.1 Initial adjustment to driving voltage.39 7.2.2 Preparation of source transducer.40 7.2.3 Aligning an ultrasonic transducer and hyd
