ASTM-E2597 Standard Practice for Manufacturing Characterization of Digital Detector Arrays

ASTM-E2597 - 2022 EDITION - CURRENT
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Standard Practice for Manufacturing Characterization of Digital Detector Arrays
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Scope

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 are to be regarded as the standard.

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.

Significance and 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).

Keywords

bad pixels; basic spatial resolution; burn-in; contrast sensitivity; DDA; efficiency; image lag; normalized SNR; SNR; specific material thickness range; ICS Number Code 11.040.50 (Radiographic equipment)

To find similar documents by ASTM Volume:

03.03 (Nondestructive Testing)

03.04 (Magnetic Properties)

To find similar documents by classification:

11.040.50 (Radiographic equipment Including radiographic diagnostic and therapy equipment Dental, medical and industrial radiographic films, see 37.040.25)

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Document Number

ASTM-E2597_E2597M-22

Revision Level

2022 EDITION

Status

Current

Modification Type

New

Publication Date

Feb. 16, 2022

Document Type

Practice

Page Count

17 pages

Committee Number

E07.01