CEI EN 61689 : 2013

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 List of symbols
5 Ultrasonic field specifications
6 Conditions of measurement
  and test equipment used
7 Type testing reference
  procedures and measurements
8 Routine measurement procedure
9 Sampling and uncertainty
  determination
Annex A (informative) - Guidance
        for performance and safety
Annex B (normative) - Raster
        scan measurement and
        analysis procedures
Annex C (normative) - Diametrical
        or line scan measurement
        and analysis procedures
Annex D (informative) - Rationale
        concerning the beam
        cross-sectional area
        definition
Annex E (informative) - Factor
        used to convert the
        beam cross-sectional area
        (A[BCS]) at the face of the
        treatment head to the
        effective radiating area
        (A[ER])
Annex F (informative) - Determining
        acoustic power through
        radiation force measurements
Annex G (informative) - Validity of
        low-power measurements of
        the beam crosssectional
        area (A[BCS])
Annex H (informative) - Influence
        of hydrophone effective
        diameter
Annex I (informative) - Effective
        radiating area measurement
        using a radiation force
        balance and absorbing
        apertures
Annex J (informative) - Guidance
        on uncertainty determination
Bibliography
Annex ZA (normative) - Normative
         references to international
         publications with their
         corresponding European
         publications

Describes ultrasonic equipment designed for physiotherapy containing an ultrasonic transducer generating continuous or quasi-continuous wave ultrasound in the frequency range 0,5 MHz to 5 MHz.