Evaluation and routine testing in medical imaging departments Constancy tests. Imaging performance of computed tomography X-ray equipment

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Hardcopy , PDF

Language(s)

English

Published date

11-30-2007

Publisher

British Standards Institution

INTRODUCTION
1 Scope and object
2 Normative references
3 Terms and definitions
4 General aspects of CONSTANCY TESTS
  4.1 Preconditions
  4.2 General conditions affecting test procedures
  4.3 Establishment of BASELINE VALUES
  4.4 Identification of equipment, instrumentation and test
      conditions
  4.5 Scope of the CONSTANCY TESTS
  4.6 Test equipment, including PHANTOMS and TEST DEVICES
  4.7 Frequency of CONSTANCY TESTS
5 Test methods for CT SCANNERS
  5.1 Positioning of the PATIENT SUPPORT
  5.2 PATIENT positioning accuracy
  5.3 TOMOGRAPHIC SECTION THICKNESS
  5.4 Dose
  5.5 NOISE, UNIFORMITY AND MEAN CT NUMBERS
  5.6 SPATIAL RESOLUTION
Annex A (informative) - Guidance on action to be taken
Annex B (informative) - Alternate test methods for SPATIAL RESOLUTION
Annex C (informative) - TOMOGRAPHIC SECTION THICKNESS for helical
        scanning
Annex D (informative) - Visual method for LOW CONTRAST RESOLUTION
Bibliography
Index of terms
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Gives assistance in performing CONSTANCY TESTS on a CT SCANNER. It applies to those components of CT SCANNERS which influence the image quality, PATIENT dose and positioning.

This part of IEC 61223 provides assistance in performing constancy tests on a CT scanner. It applies to those components of CT scanners which influence the image quality, patient dose and positioning. This standard - defines the essential parameters which describe the performance of CT scanners with regard to image quality, patient dose and positioning; the list of parameters to be tested can be found in section 4.5; - defines the methods of testing the essential parameters; - provides criteria to be applied in the evaluation of data for compliance with the tolerances of the parameters specified by the accompanying documents and with respect to baseline values. These methods rely on non-invasive measurements, using appropriate test equipment, performed to ensure that the functional performance of equipment meets established criteria or to enable the early recognition of changes in the properties of components of the equipment. The aim is to verify compliance with specifications affecting the image quality, patient dose and patient positioning.

Committee	CH/62/2
DevelopmentNote	Supersedes 93/504902 DC (11/2005) Supersedes 04/30124942 DC & BS 7725-2.6(1995). (11/2007)
DocumentType	Standard
Pages	38
PublisherName	British Standards Institution
Status	Current
Supersedes	04/30124942 DC : DRAFT NOV 2004 BS 7725-2.6(1995) : 1995 BS EN 61223-2-6:1995 93/504902 DC : JUL 93

Standards	Relationship
EN 50289-4-11:2002	Identical
IEC 61223-2-6:2006	Identical
EN 61223-2-6:2007	Identical
DIN EN 61223-2-6:2008-12	Identical
UNE-EN 61223-2-6:2008	Identical
I.S. EN 61223-2-6:2007	Identical
NF EN 61223-2-6 : 2007	Identical
SN EN 61223-2-6 : 1994	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
IEC 60336:2005	Medical electrical equipment - X-ray tube assemblies for medical diagnosis - Characteristics of focal spots
IEC 60601-1:2005+AMD1:2012 CSV	Medical electrical equipment - Part 1: General requirements for basic safety and essential performance
IEC 60522:1999	Determination of the permanent filtration of X-ray tube assemblies
IEC TR 60788:2004	Medical electrical equipment - Glossary of defined terms
CFR 21(PTS800-1299) : 0	FOOD AND DRUGS - FOOD AND DRUG ADMINISTRATION, CHAPTER 1 DEPARTMENT OF HEALTH AND HUMAN SERVICES - PARTS 800-1299
ISO 5725-3:1994	Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
ISO 5725-6:1994	Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
ISO 5725-4:1994	Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method
ISO 2092:1981	Light metals and their alloys Code of designation based on chemical symbols
IEC 60601-2-28:2017	Medical electrical equipment - Part 2-28: Particular requirements for the basic safety and essential performance of X-ray tube assemblies for medical diagnosis
IEC 61223-3-5:2004	Evaluation and routine testing in medical imaging departments - Part 3-5: Acceptance tests - Imaging performance of computed tomography X-ray equipment
IEC TR 60878:2015	Graphical symbols for electrical equipment in medical practice
IEC 60601-2-28 : 3.0	MEDICAL ELECTRICAL EQUIPMENT - PART 2-28: PARTICULAR REQUIREMENTS FOR THE BASIC SAFETY AND ESSENTIAL PERFORMANCE OF X-RAY TUBE ASSEMBLIES FOR MEDICAL DIAGNOSIS
IEC 60601-2-32:1994	Medical electrical equipment - Part 2: Particular requirements for the safety of associated equipment of X-ray equipment
ASTM E 1695 : 1995	Standard Test Method for Measurement of Computed Tomography (CT) System Performance
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
EN 61223-3-5:2004	Evaluation and routine testing in medical imaging departments - Part 3-5: Acceptance tests - Imaging performance of computed tomography X-ray equipment
IEC 61223-2-4:1994	Evaluation and routine testing in medical imaging departments - Part 2-4: Constancy tests - Hard copy cameras
IEC 61267:2005	Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics
EN 60601-2-44:2009/A2:2016	MEDICAL ELECTRICAL EQUIPMENT - PART 2-44: PARTICULAR REQUIREMENTS FOR THE BASIC SAFETY AND ESSENTIAL PERFORMANCE OF X-RAY EQUIPMENT FOR COMPUTED TOMOGRAPHY (IEC 60601-2-44:2009/A2:2016)
IEC 61223-2-5:1994	Evaluation and routine testing in medical imaging departments - Part 2-5: Constancy tests - Image display devices
IEC 60601-2-44:2009+AMD1:2012+AMD2:2016 CSV	Medical electrical equipment - Part 2-44: Particular requirements for the basic safety and essential performance of X-ray equipment for computed tomography

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BS EN 61223-2-6:2007

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