YY/T 1278-2015Measuring methods for beam area of medical ultrasound equipment transducer (English PDF)
医用超声设备换能器声束面积测量方法
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
March 2, 2015
Implementation date
January 1, 2016
Scope
YY/T 1278-2015 is the English-translated version of 医用超声设备换能器声束面积测量方法.
YY/T 1278-2015 is the Chinese pharmaceutical industry standard that gives the terms, the definitions, the test device and the method for measuring the beam area of the transducer of medical ultrasound equipment.
It applies to diagnostic and to therapeutic ultrasound equipment alike, and it sets out the hydrophone and the scanning arrangement, the way the beam cross-section is determined from the measured field and the way the result is reported. Issued on 2 March 2015, it has applied since 1 January 2016.
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Document preview — YY/T 1278-2015
National Standard of the People's Republic of China
- ICS
- 11.040.50
- Classification
- C 41
Issued by: National Medical Products Administration of the People's Republic of China
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions YY/T 0865.1-2011 defined in the following
- 4 Measuring various types of test equipment requirements
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Introduction
In the sound field parameter measurements for medical ultrasound equipment, the transducer acoustic beam area is a very important indicator, but also to calculate other acoustic output A basic data parameters. Beam area where different standards, depending on the use and technical requirements definition, measurement methods, Measurement accuracy, the position of the beam axis, but also different, but the content and basic measurement method is similar to the definition of these methods Scattered in various and specific requirements related to standards. This standard organizes relevant standards and technical literature, defined the various types of equipment Measuring beam area requirements and methods of measurement. Medical Ultrasound equipment transducer beam area measurement methods
1 Scope
This standard specifies the terms of medical ultrasound equipment transducer beam area measurement, definitions, test device and method.
This standard applies to medical ultrasound diagnostic equipment and therapeutic medical ultrasound equipment.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 9706.9-2008 Medical electrical equipment - Part 2-37. Ultrasound diagnostic and monitoring equipment requirements for the safety
GB/T 16846-2008 acoustic output of medical diagnostic ultrasonic equipment disclosure requirements JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement
YY 0592-2005 high intensity focused ultrasound (HIFU) therapy system
YY/T 0750-2009 ultrasound physiotherapy equipment within the frequency range of 0.5MHz ~ 5MHz sound field requirements and methods of measurement
YY/T 0850-2011 ultrasound diagnostic and monitoring equipment Acoustic Output parameter Measurement Uncertainty Guide
YY/T 0865.1-2011 ultrasonic hydrophone - Part 1. Measurement and features 40MHz describe the following medical ultrasound field
3 Terms and Definitions
YY/T 0865.1-2011 defined in the following terms and definitions apply to this document.
3.1 And other sound-pressure line acousticpressureisohypse
Compared with the peak measurement, set the attenuation in decibels is equal to the measuring point (see Figure 2).
3.2 Beam area
Specified plane perpendicular to the beam axis, the area of the square pulse sound pressure measurement points and other specified sound pressure line surrounded.
3.3 Beam cross-sectional area
On the beam is perpendicular to the axis of the collimator specific plane, the mean square of the sound pressure and the total mean-square sound pressure minimum area of 75%.
3.4 Sound pressure focus area
pressurefocalarea In the focal plane of the sound pressure, sound pressure around the focal point of a sound pressure line and other enclosed area.
4 Measuring various types of test equipment requirements
4.1 Diagnostic Equipment
For a particular kind of work mode, diagnostic equipment general requirements for the measurement beam area on two horizontal plane, one of which is the end face of the transducer Nearby, another usually collimated beam axis space-time peak at the maximum peak sound pressure level (zmax) horizontal plane.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 16846-2008Requirement for the declaration of the acoustic output of medical diagnostic ultrasonic equipment
- YY 0592-2005High intensity focused ultrasound therapy system
- YY/T 0750-2009Ultrasound - Physiotherapy equipment - Sound field requirements and measurement methods in the frequency range of 0.5MHz to 5MHz
- YY/T 0850-2011Guide for evaluation of uncertainty in measurement of ultrasonic diagnostic and monitoring equipment acoustic output characteristics
- YY/T 0865.1-2011Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields
GB 9706.9-2008
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Related Standards
GB/T 16846-2008 — Requirement for the declaration of the acoustic output of medical diagnostic ultrasonic equipment
YY 0592-2005 — High intensity focused ultrasound therapy system
YY/T 0750-2009 — Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0.5 MHz to 5 MHz
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YY/T 1278-2015
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