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About This Item

 

Full Description

1.1 This practice covers the design and material selection of a contrast sensitivity measuring gauge used to determine the minimum change in material thickness or density that may be imaged without regard to unsharpness limitations.

1.2 This practice is applicable to transmitted-beam radiographic imaging systems (film, radioscopy, computed radiography, and digital detector array image detectors) utilizing X-ray and gamma ray radiation sources.

1.3 The values stated in inch-pound units are to be regarded as standard. The SI units 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. For specific safety statements, see NIST/ANSI Handbook 114 Section 8, Code of Federal Regulations 21 CFR 1020.40 and 29 CFR 1910.96.

 

Document History

  1. ASTM E1647-16

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    Standard Practice for Determining Contrast Sensitivity in Radiology

    • Most Recent
  2. ASTM E1647-09


    Standard Practice for Determining Contrast Sensitivity in Radioscopy

    • Historical Version
  3. ASTM E1647-03


    Standard Practice for Determining Contrast Sensitivity in Radioscopy

    • Historical Version
  4. ASTM E1647-98a


    Standard Practice for Determining Contrast Sensitivity in Radioscopy

    • Historical Version