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ASTM E2002-98(2009)

Current Reaffirmation

Standard Practice for Determining Image Unsharpness and Basic Spatial Resolution in Radiography and Radioscopy

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1.1 This practice covers the design and basic use of a gauge used to determine the total image unsharpness of radiographs and radioscopic systems.

1.2 This practice is applicable to radiographic and radioscopic imaging systems utilizing X-ray and gamma ray radiation sources.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 The gauge described can be used effectively with radiation energies up to 400 kv. When using energies in the megavolt range the results may not be completely satisfactory.

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 determine the applicability of regulatory limitations prior to use.

The gauge is intended to provide a means for measuring total image unsharpness as independently as practicable from the imaging system contrast sensitivity limitations. Further description and details of the gauge are provided in EN-462-5:1994.

The gauge can be used in conjunction with a contrast sensitivity measuring gauge, as described in Practice E 1647.

SDO ASTM: ASTM International
Document Number E2002
Publication Date June 1, 2009
Language en - English
Page Count 3
Revision Level 98(2009)
Supercedes
Committee E07.01
Publish Date Document Id Type View
Feb. 1, 2022 E2002-22 Revision
July 1, 2015 E2002-15 Revision
Dec. 10, 1998 E2002-98 Revision
June 1, 2009 E2002-98R09 Reaffirmation
June 10, 2003 E2002-98R03E01 Reaffirmation