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Standard Reference Radiograph for Evaluating the Performance of Radiographic Digitization Systems (Includes all amendments And changes 10/2/2015).
Automaticky přeložený název:
Standardní referenční Rentgenový snímek pro hodnocení výkonnosti radiografický systémů pro digitalizaci
NORMA vydána dne 1.12.2011
Označení normy: ASTM E1936-03(2011)e1
Poznámka: NEPLATNÁ
Datum vydání normy: 1.12.2011
Kód zboží: NS-43654
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
density contrast sensitivity, digitization, line pairs, reference radiograph, spatial linearity, spatial resolution, system evaluation, target, X-ray,, ICS Number Code 11.040.50 (Radiographic equipment)
1. Scope | ||||||||||||
1.1 This reference radiograph covers a series of test targets suitable for evaluating, quantifying, and documenting performance parameters of the radiographic digitization process or the electronic image reconstruction process, or both. This reference radiograph can be used for visual and electronic analysis of digitization systems. This is the first of three related standards. Subsequent standards will provide guidance on the use of the test targets and recommended system performance levels 1.2 This reference radiograph provides a series of test targets to provide a vehicle for the evaluation of spatial resolution, density contrast sensitivity, dynamic range, and spatial linearity as well as other aspects of a digitization system. The test targets are suitable for evaluating a digitization system with a spatial resolution down to ∼1/1000 in. (25 micrometres (μ)) a density contrast sensitivity down to 0.02 optical density (OD), a density range of 0.5 to 4.5 OD, and a film size capacity of 14 in. (355 mm) wide by 17 in. (431 mm) long. 1.3 The values stated in inch-pound units are to be regarded as the standard, with the exception of the spatial resolution targets (6.2 and 6.7) which are stated in SI units. 1.4 This standard does not purport to address 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. |
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2. Referenced Documents | ||||||||||||
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