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ASTM E1570

Standard Practice for Computed Tomographic (CT) Examination

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Organization: ASTM
Publication Date: 10 May 2000
Status: inactive
Page Count: 11
ICS Code (IT applications in health care technology): 35.240.80
scope:

This practice is for computed tomography (CT), which may be used to nondestructively disclose physical features or anomalies within a test object by providing radiological density and geometric measurements. This practice implicitly assumes the use of penetrating radiation, specifically X-ray and y-ray.

CT systems utilize a set of transmission measurements made along paths through the test object from many different directions. Each of the transmission measurements is digitized and stored in a computer, where they are subsequently reconstructed by one of a variety of techniques. A treatment of CT principles is given in Guide E 1441.

CT is broadly applicable to any material or test object through which a beam of penetrating radiation passes. The principal advantage of CT is that it provides densitometric (that is, radiological density and geometry) images of thin cross sections through an object without the structural superposition in projection radiography.

This practice describes procedures for performing CT examinations. This practice is to address the general use of CT technology and thereby facilitate its use.

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 Section 8, NBS Handbook 114, and Federal Standards 21 CFR 1020.40 and 29 CFR 1910.96.

 

Document History

June 15, 2019
Standard Practice for Fan Beam Computed Tomographic (CT) Examination
This practice establishes the minimum requirements for computed tomography (CT) examination of test objects using fan beam systems (systems that generate one or a few CT cross sectional slices at a...
July 1, 2011
Standard Practice for Computed Tomographic (CT) Examination
This practice is for computed tomography (CT), which may be used to nondestructively disclose physical features or anomalies within a test object by providing radiological density and geometric...
May 10, 2000
Standard Practice for Computed Tomographic (CT) Examination
1. Scope 1.1 This practice is for computed tomography (CT), which may be used to nondestructively disclose physical features or anomalies within an object under examination by providing radiological...
ASTM E1570
May 10, 2000
Standard Practice for Computed Tomographic (CT) Examination
This practice is for computed tomography (CT), which may be used to nondestructively disclose physical features or anomalies within a test object by providing radiological density and geometric...
December 10, 1995
Standard Practice for Computed Tomographic (CT) Examination
1. Scope 1.1 Computed tomography (CT) may be used for new applications, or, in place of film radiography, provided that the capability to disclose physical features or indications that form the...
March 15, 1995
STANDARD PRACTICE FOR COMPUTED TOMOGRAPHIC (CT) EXAMINATION
A description is not available for this item.
September 15, 1993
STANDARD PRACTICE FOR COMPUTED TOMOGRAPHIC (CT) EXAMINATION
A description is not available for this item.

References

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