Constancy test
The constancy test is a review of reference values as part of quality assurance in X-ray diagnostics , nuclear medicine diagnostics and radiation therapy . It is specified in the respective national regulations which parameters are to be tested, which limit values are to be observed, which test methods are to be used and which test bodies are to be used. The reference values for the constancy test are determined during the (partial) acceptance test using the operator's measuring equipment.
Medical Office - Dental Office
The medical office is usually a facility for quality assurance in the use of medical radiation, which is located at the respective German medical associations. Corresponding dental offices (also known as X-ray offices) are maintained by the dentists' chambers - sometimes together with the statutory health insurance associations.
Constancy test in radiology
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DIN 6868 |
|---|---|
| Area | Quality assurance in X-ray diagnostics |
| title | Ensuring image quality in X-ray diagnostic companies |
| Brief description: | Constancy test |
| Latest edition | various |
| ISO | - |
The constancy test for Germany is defined in the multipart DIN 6868 for various areas of application. The following standard parts are available (as of February 2017):
- Part 1: General
- Part 2: Constancy test of film processing
- Part 3: Constancy test for direct radiography
- Part 4: Constancy test on medical X-ray equipment for fluoroscopy
- Part 5: Constancy test according to RöV on dental X-ray facilities
- Part 7: Constancy test on X-ray equipment for mammography
- Part 11: Constancy test of the recording system and the camera in X-ray cinematography (discontinued)
- Part 12: Constancy test on image documentation systems ( pre-standard )
- Part 13: Constancy test according to RöV for projection radiography with digital image receiver systems
- Part 14: Constancy test according to RöV on X-ray equipment for digital mammography
- Part 15: Constancy test according to RöV on dental X-ray equipment for digital volume tomography
- Part 16: Documentation of the clinical image processing parameters for digital X-ray systems (draft)
- Part 55: Acceptance test on medical X-ray facilities; Functional test of the film processing (pre-standard)
- Part 56: Acceptance test on image documentation systems
- Part 57: Acceptance test on image display devices (pre-standard) (discontinued)
- Part 58: Acceptance test on medical X-ray equipment for projection radiography with digital image receiving systems (pre-standard) (discontinued)
- Part 100: Determination of physical parameters for evaluating the image quality on X-ray equipment for digital mammography (draft)
- Part 150: Acceptance test according to RöV on medical X-ray equipment for imaging and fluoroscopy
- Part 151: Acceptance test according to RöV on dental X-ray equipment; Rules for checking the image quality after construction, repair and modification
- Part 152: Acceptance test according to RöV on X-ray equipment for film-foil mammography
- Part 157: Acceptance and constancy test according to RöV on image display systems in their environment
- Part 159: Acceptance and constancy test in teleradiology according to RöV
- Part 160: Quality requirements for recordings on non-transparent media in dental X-ray diagnostics
- Part 161: Acceptance test according to RöV on dental x-ray equipment for digital volume tomography
- Part 162: Acceptance test according to RöV on X-ray equipment for digital mammography
- Part 163: Acceptance and constancy test according to RöV on X-ray equipment for digital mammographic stereotaxic (draft)
Further regulations for the implementation of constancy tests in radiology can be found in the quality assurance guideline (QS-RL) .
The medical authorities have issued guidelines for the constancy tests (Radiology Guide, as of 2012)
Constancy test in nuclear medicine
|
|
DIN 6855 |
|---|---|
| Area | Quality assurance in nuclear medicine |
| title | Constancy test of nuclear medicine measuring systems |
| Brief description: | Constancy test |
| Latest edition | various |
| ISO | - |
The constancy test is defined for Germany in the multipart DIN 6855 for various areas of application. The following standard parts are available (as of February 2017):
- Part 1: In-vivo and in-vitro measuring stations
- Part 2: Single crystal gamma cameras for planar scintigraphy and for single photon emission tomography with the help of rotating measuring heads
- Part 4: Constancy test of positron emission tomographs (PET)
- Part 11: Aktivimeter
Constancy test of multimodal devices
|
|
DIN 6858 |
|---|---|
| Area | Quality inspection of multimodal imaging |
| title | Constancy test of multimodal measuring systems |
| Brief description: | Constancy test |
| Latest edition | 2014 |
| ISO | - |
The DIN 6858 standard covers devices that combine imaging methods from different disciplines. The following parts are available (as of February 2017):
- Part 1: constancy test PET / CT
- Part 2: Constancy test SPECT / CT (draft)
Constancy test in radiation therapy
|
|
DIN 6846-5 |
|---|---|
| Area | Quality assurance in radiation therapy |
| title | Medical gamma irradiation equipment |
| Brief description: | Constancy test |
| Latest edition | 1992-03 |
| ISO | - |
|
|
DIN 6847-5, -6 |
|---|---|
| Area | Quality assurance in radiation therapy |
| title | Medical electron accelerator systems |
| Brief description: | Constancy test |
| Latest edition | 2008-09, 2012-09 |
| ISO | - |
|
|
DIN 6853-5 |
|---|---|
| Area | Quality assurance in radiation therapy |
| title | Medical remote-controlled, automatically operated afterloading system |
| Brief description: | Constancy test |
| Latest edition | 2012-09 |
| ISO | - |
|
|
DIN 6873-5 |
|---|---|
| Area | Quality assurance in radiation therapy |
| title | Radiation planning systems |
| Brief description: | Constancy test |
| Latest edition | 1993-08 |
| ISO | - |
|
|
DIN 6875 |
|---|---|
| Area | Quality assurance in radiation therapy |
| title | Part 2: Percutaneous stereotactic radiation, Part 4: Fluence-modulated radiation therapy |
| Brief description: | Constancy test |
| Latest edition | 2008-11, 2011-10 |
| ISO | - |
The constancy test is described in various standards for Germany depending on the area of application. The following standards and standard parts are available (as of February 2014):
- DIN 6846-5: Constancy tests of apparatus quality features
- DIN 6847-5: Constancy tests of characteristics
- DIN 6847-6: Electronic image receiver (EPID) - constancy test
- DIN 6853-5: Constancy test of characteristics
- DIN 6873-5: Constancy tests of quality features
- DIN 6873-5: Constancy tests of quality features (draft standard 2013)
- DIN 6875-2: Percutaneous stereotactic irradiation - constancy tests
- DIN 6875-4: Fluence-modulated radiation therapy - constancy tests
Further regulations for the implementation of constancy tests in nuclear medicine and radiation therapy can be found in the guideline "Radiation Protection in Medicine" .
Individual evidence
- ↑ X-ray ordinance at juris ( Memento of the original from February 25, 2018 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Radiation Protection Ordinance at juris ( Memento of the original from February 27, 2018 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Guideline for the implementation of quality assurance in X-ray facilities for the examination or treatment of people according to §§ 16 and 17 of the X-ray Ordinance ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. - Quality assurance guideline (QS-RL) -
- ↑ Guide to radiology guidelines for the constancy test from the Medical Association
- ↑ Guideline Radiation Protection in Medicine ( Memento of the original dated December 1, 2017 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. . Retrieved November 29, 2017.
