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YY/T 0095-2013Calcium tungstate middle speed intensifying screens for medical use (English PDF)

钨酸钙中速医用增感屏

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Issued by

NMPA

Level / Type

Industry · Recommended

Issue date

October 21, 2013

Implementation date

October 1, 2014

Scope

YY/T 0095-2013 is the English-translated version of 钨酸钙中速医用增感屏.

YY/T 0095-2013 is the Chinese pharmaceutical industry standard for medium speed calcium tungstate intensifying screens, the fluorescent screens that sit against the film in a radiographic cassette and shorten the exposure.

It gives the terminology, the requirements the screen must meet, the test methods, the inspection rules, and the rules for marking, labels, the instruction manual, packaging, transport and storage.

The requirements cover the speed of the screen and its uniformity, the resolution it allows, the appearance and finish of the fluorescent layer, and the durability of the screen in use.

It applies to X-ray intensifying screens used in radiography. It replaces YY/T 0095-2004, was issued on 21 October 2013 and has applied since 1 October 2014.

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Document preview — YY/T 0095-2013

National Standard of the People's Republic of China

ICS: 11.040.50
Classification: C 43
Replacing: YY/T 0095-2004

Issued by: National Medical Products Administration of the People's Republic of China

Foreword
1 Scope
2 Normative references
3 Terms and Definitions GB/T 10149-1988 define the following
4 Requirements

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

Instead of the standard YY/T 0095-2004 "speed calcium tungstate intensifying screens for medical," compared with the YY/T 0095-2004 major changes as follows.

--- Modify the standard reference file's number;

--- 5.3.2 sensitization modified coefficient test methods;

--- Modify the limiting resolution 5.4.2 Test Method.

1 Scope

This standard specifies the speed of medical calcium tungstate intensifying screen (hereinafter referred to as intensifying screen) terminology, requirements, test methods, inspection rules, marking, Labels, instruction manual and packaging, transportation and storage. This standard applies to X-ray intensifying screens used in photography.

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/T 191-2008 Packaging - Pictorial signs

GB/T 2828.1-2012 count batch inspection sampling plan Sampling procedures for inspection by acceptance quality limit (AQL) retrieval

GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test)

GB/T 9969-2008 General Industrial Product Manual

GB/T 10149-1988 X-ray equipment for medical terminology and symbols

3 Terms and Definitions GB/T 10149-1988 define the following

terms and definitions apply to this document.

3.1 Limiting resolution

The template smallest distance between two adjacent pairs as a distinguishable image information imaged on the ability of the film to the resolution. Intensifying screen Limiting resolution is the use of intensifying screens for resolution test card image on the X-ray film, every millimeter maximum linear human eye can distinguish logarithm.

3.2 Emission spectrum

Emission energy distribution by wavelength or frequency, said emission spectrum.

3.3 Sensitizing factor

Under the conditions of use and do not use the intensifying screen, to X-ray film was exposed at an exposure amount of the film density value 1 (The mAs) ratio.

4 Requirements

4.1 Working conditions

Intensifying screen should meet the following conditions.

Before a) can be equipped with blue or green film, the film is placed in front of the light-emitting surface opposite intensifying screen between the rear panel, and close to the intensifying screen, after Screen panel, X-ray tube is aligned perpendicular to the reference axis intensifying screen on the back of the front panel;

b) at room temperature. 5 °C ~ 30 °C;

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 23910-2009|YY/T 0094-2013

Editions of YY/T 0095

Edition	Title	Revision	Status
YY/T 0095-2013	Calcium tungstate middle speed intensifying screens for medical use	current edition	Current
YY/T 0095-2004	Calcium tungstate middle speed intensifying screens for medical use	previous edition	Superseded

This page sells the current edition, YY/T 0095-2013. Earlier editions are listed for reference only.

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