EN 61220:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Ultrasonics - Fields - Guidance for the measurement and characterization of ultrasonic fields generated by medical ultrasonic equipment using hydrophones in the frequency range 0,5 MHz to 15 MHz
01-10-2007
14-02-1995
Introduction
Clause
1 Scope
2 Normative references
3 List of symbols
4 Types of medical ultrasonic equipment
4.1 Pulse-echo and pulsed Doppler equipment
4.2 Continuous-wave Doppler systems
4.3 Therapy transducers
5 Measuring conditions
5.1 Choice of size of the hydrophone active element
5.2 Hydrophone cable length and amplifiers
5.3 Rotation of the hydrophone
5.4 Hydrophone positioning
5.5 Avoiding reflection effects using membrane
hydrophones
6 Simplified procedures and guidelines
6.1 Procedures
6.2 Useful relationships between acoustical
parameters
7 Acoustic parameter specification
Annexes
A (normative) Bandwidth and spatial-averaging
corrections
B (informative) Bibliography
ZA (normative) Other international standards quoted in
this standard with the references of the
relevant European publications
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