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ASTM E2597-07e1

Current Revision

Standard Practice for Manufacturing Characterization of Digital Detector Arrays

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1.1 This practice describes the evaluation of Digital Detector Arrays (DDAs), and assures that one common standard exists for quantitative comparison of DDAs so that an appropriate DDA is selected to meet NDT requirements.

1.2 This practice is intended for use by manufacturers or integrators of DDAs to provide quantitative results of DDA characteristics for NDT user or purchaser consumption. Some of these tests require specialized test phantoms to assure consistency among results among suppliers or manufacturers. These tests are not intended for users to complete, nor are they intended for long term stability tracking and lifetime measurements. However, they may be used for this purpose, if so desired.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 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 determine the applicability of regulatory limitations prior to use.

This practice provides a means to compare DDAs on a common set of technical measurements, realizing that in practice adjustments can be made to achieve similar results even with disparate DDAs given geometric magnification, or other industrial radiologic settings that may compensate for one shortcoming of a device.

A user must understand the definitions and corresponding performance parameters used in this practice in order to make an informed decision on how a given DDA can be used in the target application.

The factors that will be evaluated for each DDA are: basic spatial resolution (SRb), efficiency (Detector SNR-normalized (dSNRn) at 1 mGy, for different energies and beam qualities), achievable contrast sensitivity (CSa), specific material thickness range (SMTR), image lag, burn-in, bad pixels and internal scatter radiation (ISR).

SDO ASTM: ASTM International
Document Number E2597
Publication Date Dec. 1, 2007
Language en - English
Page Count 19
Revision Level 07e1
Supercedes
Committee E07.01
Publish Date Document Id Type View
Dec. 1, 2007 E2597-07E01 Revision
Dec. 1, 2007 E2597-07 Revision