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YY/T 0939-2014 English PDF

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US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
YY/T 0939-2014: Ultrasound bone sonometers. Test method of broadband ultrasound attenuation(BUA)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YY/T 0939-2014	209	Add to Cart	3 days	Ultrasound bone sonometers. Test method of broadband ultrasound attenuation(BUA)	Valid

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Basic data

Standard ID: YY/T 0939-2014 (YY/T0939-2014)
Description (Translated English): Ultrasound bone sonometers. Test method of broadband ultrasound attenuation(BUA)
Sector / Industry: Medical Device & Pharmaceutical Industry Standard (Recommended)
Classification of Chinese Standard: C41
Classification of International Standard: 11.040.50
Word Count Estimation: 9,947
Date of Issue: 6/17/2014
Date of Implementation: 7/1/2015
Quoted Standard: YY 0774-2010; YY/T 0865.1-2011
Regulation (derived from): China Food and Drug Administration in 2014 Bulletin No. 30
Issuing agency(ies): State Food and Drug Administration
Summary: This Standard applies to the ultrasound bone densitometer broadband ultrasound attenuation (BUA) measurement and verification. This Standard specifies the ultrasound bone densitometer broadband ultrasound attenuation (BUA) of the test method.

YY/T 0939-2014: Ultrasound bone sonometers. Test method of broadband ultrasound attenuation(BUA)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Ultrasound bone sonometers.Test method of broadband ultrasound attenuation (BUA) ICS 11.040.50 C41 People's Republic of China pharmaceutical industry standards Ultrasound bone densitometer Standard Test Method for broadband ultrasound attenuation (BUA) of Testmethodofbroadbandultrasoundattenuation (BUA) Issued on. 2014-06-17 2015-07-01 implementation China Food and Drug Administration released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. This standard was proposed by the China Food and Drug Administration. This standard by the standardization of medical ultrasound equipment for medical appliances National Standardization Technical Committee Technical Committee (SAC/TC10/SC2) Centralized. This standard was drafted. State Food and Drug Administration of Hubei Medical Device Quality Supervision and Inspection Center, Research Institute of Acoustics , Hefei University of Technology, GE Medical Systems (China) Co., Ltd. The main drafters of this standard. Jiang Shilin, Zhu Chenggang, Peng Hu, Hong-chun wave.

Introduction

Broadband ultrasound attenuation (BUA) measurements and calculations, the details may be different for each manufacturer, for example, the transmission signal transducer Bandwidth and time-domain signal sampling frequency, the frequency range of the linear fit, are likely to cause broadband ultrasound attenuation (BUA) final results s difference. For these reasons, at present, broadband ultrasound attenuation (BUA) measured and calculated values has its uncertainties, namely two ultrasonic bone density measuring instrument It is possible to obtain different broadband ultrasound attenuation (BUA) values of the amount of the same sample for this problem, the standard set forth in addition to the usual broadband Ultrasound attenuation (BUA) test methods, also proposed a test method for measuring broadband ultrasound attenuation (BUA) relative value. Ultrasound bone densitometer Standard Test Method for broadband ultrasound attenuation (BUA) of

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. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of YY/T 0939-2014_English be delivered?

Answer: Upon your order, we will start to translate YY/T 0939-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of YY/T 0939-2014_English with my colleagues?

Answer: Yes. The purchased PDF of YY/T 0939-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.