Name: ASTM E 2446 : 2005 : R2010
Brand: ASTM
Price: 62.61 GBP

ASTM E 2446 : 2005 : R2010

Superseded

View Superseded by

Standard Practice for Classification of Computed Radiology Systems

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-06-2010

Publisher

American Society for Testing and Materials

1.1 This practice describes the evaluation and classification of a computed radiography (CR) system, a particular phosphor imaging plate (IP), system scanner and software, in combination with specified metal screens for industrial radiography. It is intended to ensure that the evaluation of image quality, as far as this is influenced by the scanner/IP system, meets the needs of users.

1.2 The practice defines system tests to be used to classify the systems of different suppliers and make them comparable for users.

1.3 The CR system performance is described by signal and noise parameters. For film systems, the signal is represented by gradient and the noise by granularity. The signal-to-noise ratio is normalized by the basic spatial resolution of the system and is part of classification. The normalization is given by the scanning aperture of 100 µm diameter for the micro-photometer, which is defined in Test Method E1815 for film system classification. This practice describes how the parameters shall be measured for CR systems.

1.4 The values stated in SI are to be regarded as the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

Committee	E 07
DocumentType	Standard Practice
Pages	9
ProductNote	Reconfirmed 2010
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM E 2446 : 2015
Supersedes	ASTM E 2446 : 2005

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