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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY
TRS 457, Dosimetry in Diagnostic Radiology: An International Code of Practice
Antti KosunenRadiation Metrology Laboratory-STUK
NCRRP and STUK Workshop on dosimetry in radiotherapy and in diagnostic radiology
6th and 7th of November, 2008Sofia, Bulgaria
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 23.11.2008 / AK-STUK
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 33.11.2008 / AK-STUK
IAEA TRS 457, Scope and Objective
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 43.11.2008 / AK-STUK
IAEA TRS 457, Work
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 53.11.2008 / AK-STUK
IAEA TRS 457, Work
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 63.11.2008 / AK-STUK
Implementation of the International Code of Practice on Dosimetry in Diagnostic Radiology (TRS 457):
Review of testing resultsCoordinated Research Project on Implementation of the International Code of Practice
on Dosimetry in Diagnostic Radiology TRS 457 at Secondary Standard DosimetryLaboratories and HospitalsDRAFT OF June 2008
IAEA TRS 457, Work
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 73.11.2008 / AK-STUK
IAEA TRS 457, Chapter 1: Introduction
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 83.11.2008 / AK-STUK
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 93.11.2008 / AK-STUK
IAEA TRS 457, Chapter 2: Framework
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 103.11.2008 / AK-STUK
( 2sd )
7 %• Relative risk• Interventional procedures • Quality assurance
measurements• Paediatric procedures
20 %• Risk assessment : Absolute risk • Dose surveys
IAEA TRS 457, Chapter 2: Framework
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 113.11.2008 / AK-STUK
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 123.11.2008 / AK-STUK
IAEA TRS 457, Chapter 3: Quantities and units
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 133.11.2008 / AK-STUK
IAEA TRS 457, Chapter 3: Quantities and units
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 143.11.2008 / AK-STUK
IAEA TRS 457, Chapter 3: Quantities and units
New ICRP in 2007
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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 163.11.2008 / AK-STUK
• NK based formalism
• Beam quality correction factor
IAEA TRS 457, Chapter 4: Dosimetry formalism
Cross calibrations
• Especially with KAP meters
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 173.11.2008 / AK-STUK
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 183.11.2008 / AK-STUK
IAEA TRS 457, Chapter 5: Selection of instruments
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 193.11.2008 / AK-STUK
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 203.11.2008 / AK-STUK
IAEA TRS 457, Chapter 6: Establisment of SSDLs
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IAEA TRS 457, Chapter 7: CoP for calibrations at SSDLs
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 233.11.2008 / AK-STUK
IAEA TRS 457, Chapter 7: CoP for calibrations at SSDLs
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 243.11.2008 / AK-STUK
...continues
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 253.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 263.11.2008 / AK-STUK
8.1 Introduction
• Worksheets• Dosimeters should be calibrated at the laboratory• Calibration interval:
• Based on national requirements,• Usually should not exceed two years
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 273.11.2008 / AK-STUK
8.2 Patient selection
• Limitations of phantom measurements• Patients for reference dose levels
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 283.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 293.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 303.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 313.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 323.11.2008 / AK-STUK
IAEA TRS 457, Chapter 8: CoP for clinical measurements
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 333.11.2008 / AK-STUK
IAEA TRS 457, Coordinated Research Project for Testing of the CoP
Implementation of the International Code of Practice on Dosimetry in Diagnostic Radiology
(TRS 457):Review of testing results
Coordinated Research Project on Implementation of the International Code of Practice on Dosimetry in Diagnostic
Radiology TRS 457 at Secondary Standard DosimetryLaboratories and HospitalsDRAFT OF June 2008
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 343.11.2008 / AK-STUK
1. Radiation and Nuclear Safety Authority (STUK), Finland2. Greek Atomic Energy Commission (GAEC), Greece3. Institut für Biomedizinische Technik und Physik, Austria4. National Institute for Radiological Protection, China 5. National Radiation Protection Institute, Czech Republic6. Frederic Joliot-Curie National Research Institute for Radiobiology, Hungary7. Instituto de Radioprotecao e Dosimetria, Brazil 8. Dept. of Medical Sciences, Div. of Radiation and Medical Devices, Thailand9. Institute of Nuclear Sciences and Technology, Vietnam 10. Centro de Proteccion e Higiene de las Radiaciones (CPHR), Cuba 11. Regional Medical Physics Department, Newcastle General Hospital, UK........
IAEA TRS 457, Coordinated Research Project for Testing of the CoP
SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALENRADIATION AND NUCLEAR SAFETY AUTHORITY 353.11.2008 / AK-STUK
Activity 7 Practical peak voltage
Activity 6 TLD dosimetry audit for diagnostic measurements
- at hospitals
- at SSDLs
Activity 5 Calibration of KAP meters
4b TLD measurement of GR phantom
- report measurements in hospitals
(a - ii) implementation of measurement procedures in hospital incl. measurements with patients
(a - i) report on phantoms and dosimeters available and capabilities to manufacture phantoms.
Activity 4 Evaluation of measurement procedures in hospitals
Activity 3 Comparison of calibrations
Activity 2 Development of calibration procedures including the uncertainty budget
Activity 1 Setting-up of calibration beam qualities at SSDLs
Activity
IAEA TRS 457, Coordinated Research Project for Testing of the CoP