Your shopping cart is empty!
ASTM International, 06/01/2010
Publisher: ASTM
File Format: PDF
$29.00$58.00
Published:01/06/2010
Pages:9
File Size:1 file , 270 KB
Note:This product is unavailable in Russia, Ukraine, Belarus
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.
Standard Specification for Round Wire for Winding Electron Tube Grid Laterals
$30.00 $60.00
Standard Test Method for Bursting Strength of Textiles-Constant-Rate-of-Traverse (CRT) Ball Burst Test
$25.00 $50.00
Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Welded Tube
$26.00 $52.00
Standard Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod