Standard Practice for Manufacturing Characterization of Digital Detector Arrays

Importancia y uso:

4.1 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.

4.2 A user should 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.

4.3 The factors that will be evaluated for each DDA are: interpolated basic spatial resolution (iSR_b^detector), efficiency (normalized Detector SNR (SNR_N) at 1 mGy, for different energies and beam qualities), achievable contrast sensitivity (CSa), specific material thickness range (SMTR) and ISO-MTL , image lag, burn-in, bad pixels distribution and statistics and internal scatter ratio (ISR).

4.4 Given that each of these parameters are discussed together in many of the following sections, the following list will be helpful in selecting the key sections for a given test as follows. It should be noted that other sections of the document are needed to establish the appropriate technique for the parameter under test. Note that for each parameter (test), the first section listed is typically an apparatus or gauge (if required), the second section listed are the standardized measurements, and the third section listed involves the analysis or computations:

4.4.1 For iSR_b^detector, see 5.1, 7.7, 8.2.

4.4.2 For Detector Efficiency, see 5.3, 7.8, 8.3.

4.4.3 For CSa, see 5.2, 7.9, 8.4.

4.4.4 For SMTR, see 5.2 (or 7.9, if already completed), 7.10, 8.5.

4.4.5 For ISO-MTL, see 5.2 (or 7.9, if already completed), 7.10, 8.6.

4.4.6 For Image Lag, see 7.11.1, 8.7.1.

4.4.7 For Burn-in, see 5.4, 7.11.2, 8.7.2.

4.4.8 For Bad Pixel Tests, see 6.2, 7.12, 8.8.

4.4.9 For ISR, see 5.4, 7.13, 8.9.

Subcomité:

E07.01

Referida por:

E2698-18E01, E1161-21, E2903-18, E3375-23, E2698-18E01, E2737-23, E0543-21, E3327_E3327M-21, E2533-21, E0543-21, E2982-21

Volúmen:

03.04

Número ICS:

11.040.50 (Radiographic equipment)

Palabras clave:

bad pixels; basic spatial detector resolution; burn-in; contrast sensitivity; DDA; efficiency; image lag; normalized SNR; SNR; specific material thickness range;