YY/T 0939-2014Ultrasound bone sonometers - Test method of broadband ultrasound attenuation (BUA) (English PDF)
超声骨密度仪 宽带超声衰减（BUA）的试验方法
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
June 17, 2014
Implementation date
July 1, 2015
Scope
YY/T 0939-2014 is the English-translated version of 超声骨密度仪 宽带超声衰减（BUA）的试验方法.
YY/T 0939-2014 is the Chinese standard "Ultrasound bone sonometers - Test method of broadband ultrasound attenuation (BUA)". Its scope clause reads: This standard specifies the ultrasound bone densitometer broadband ultrasound attenuation (BUA) Test Method.
This standard applies to the ultrasound bone densitometer broadband ultrasound attenuation (BUA) measurement and verification. Its clauses include terms and definitions; bua measurement schematic diagram.
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Document preview — YY/T 0939-2014
National Standard of the People's Republic of China
- ICS
- 11.040.50
- Classification
- C41
Issued by: National Medical Products Administration
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
1 Scope
This standard specifies the ultrasound bone densitometer broadband ultrasound attenuation (BUA) Test Method.
This standard applies to the ultrasound bone densitometer broadband ultrasound attenuation (BUA) measurement and verification.
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.
YY 0774-2010 ultrasound bone densitometer
YY/T 0865.1-2011 ultrasonic hydrophone - Part 1. Measurement and features 40MHz describe the following medical ultrasound field
3 Terms and Definitions
Terms and definitions YY 0774-2010 and YY/T 0865.1-2011 defined apply to this document.
Test Method 4
4.1 Test Environment
Test environment should meet the environmental parameters specified by the manufacturer, such as temperature, humidity, air pressure and/or altitude.
4.2 Test Equipment
See YY/T 0865.1-2011 Chapter 5 measurement requirements, test samples may be specified by the manufacturer, measurement method shown in Figure 1
FIG.
1 BUA measurement schematic diagram
Note 1. The pulse transmitter (device). generates electrical pulses for transmission probes use.
Note 2. The signal receiver (amplifier). for (amplification) of the received signal.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
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Related Standards
YY 0774-2010 — Ultrasound bone sonometers
YY/T 0865.1-2011 — Ultrasonic—Hydrophone - Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz
YY/T 0297-2026 — General requirements for clinical investigation of medical devices
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